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Kirill Smelkov
mariadb
Commits
cd24d15b
Commit
cd24d15b
authored
Apr 20, 2002
by
unknown
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manual.texi More keyword capping.
Docs/manual.texi: More keyword capping.
parent
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View file @
cd24d15b
...
@@ -27921,7 +27921,7 @@ mysql> SELECT x'FF'
...
@@ -27921,7 +27921,7 @@ mysql> SELECT x'FF'
-> 255
-> 255
mysql> SELECT 0xa+0;
mysql> SELECT 0xa+0;
-> 10
-> 10
mysql>
select
0x5061756c;
mysql>
SELECT
0x5061756c;
-> Paul
-> Paul
@end example
@end example
...
@@ -30263,13 +30263,13 @@ Logical NOT. Returns @code{1} if the argument is @code{0}, otherwise returns
...
@@ -30263,13 +30263,13 @@ Logical NOT. Returns @code{1} if the argument is @code{0}, otherwise returns
@code{0}.
@code{0}.
Exception: @code{NOT NULL} returns @code{NULL}:
Exception: @code{NOT NULL} returns @code{NULL}:
@example
@example
mysql>
select
NOT 1;
mysql>
SELECT
NOT 1;
-> 0
-> 0
mysql>
select
NOT NULL;
mysql>
SELECT
NOT NULL;
-> NULL
-> NULL
mysql>
select
! (1+1);
mysql>
SELECT
! (1+1);
-> 0
-> 0
mysql>
select
! 1+1;
mysql>
SELECT
! 1+1;
-> 1
-> 1
@end example
@end example
The last example returns @code{1} because the expression evaluates
The last example returns @code{1} because the expression evaluates
...
@@ -30282,11 +30282,11 @@ the same way as @code{(!1)+1}.
...
@@ -30282,11 +30282,11 @@ the same way as @code{(!1)+1}.
Logical OR. Returns @code{1} if either argument is not @code{0} and not
Logical OR. Returns @code{1} if either argument is not @code{0} and not
@code{NULL}:
@code{NULL}:
@example
@example
mysql>
select
1 || 0;
mysql>
SELECT
1 || 0;
-> 1
-> 1
mysql>
select
0 || 0;
mysql>
SELECT
0 || 0;
-> 0
-> 0
mysql>
select
1 || NULL;
mysql>
SELECT
1 || NULL;
-> 1
-> 1
@end example
@end example
...
@@ -30298,9 +30298,9 @@ mysql> select 1 || NULL;
...
@@ -30298,9 +30298,9 @@ mysql> select 1 || NULL;
Logical AND. Returns @code{0} if either argument is @code{0} or @code{NULL},
Logical AND. Returns @code{0} if either argument is @code{0} or @code{NULL},
otherwise returns @code{1}:
otherwise returns @code{1}:
@example
@example
mysql>
select
1 && NULL;
mysql>
SELECT
1 && NULL;
-> 0
-> 0
mysql>
select
1 && 0;
mysql>
SELECT
1 && 0;
-> 0
-> 0
@end example
@end example
@end table
@end table
...
@@ -30320,13 +30320,13 @@ If @code{expr1} is not @code{NULL}, @code{IFNULL()} returns @code{expr1},
...
@@ -30320,13 +30320,13 @@ If @code{expr1} is not @code{NULL}, @code{IFNULL()} returns @code{expr1},
else it returns @code{expr2}. @code{IFNULL()} returns a numeric or string
else it returns @code{expr2}. @code{IFNULL()} returns a numeric or string
value, depending on the context in which it is used:
value, depending on the context in which it is used:
@example
@example
mysql>
select
IFNULL(1,0);
mysql>
SELECT
IFNULL(1,0);
-> 1
-> 1
mysql>
select
IFNULL(NULL,10);
mysql>
SELECT
IFNULL(NULL,10);
-> 10
-> 10
mysql>
select
IFNULL(1/0,10);
mysql>
SELECT
IFNULL(1/0,10);
-> 10
-> 10
mysql>
select
IFNULL(1/0,'yes');
mysql>
SELECT
IFNULL(1/0,'yes');
-> 'yes'
-> 'yes'
@end example
@end example
...
@@ -30335,9 +30335,9 @@ mysql> select IFNULL(1/0,'yes');
...
@@ -30335,9 +30335,9 @@ mysql> select IFNULL(1/0,'yes');
If @code{expr1 = expr2} is true, return @code{NULL} else return @code{expr1}.
If @code{expr1 = expr2} is true, return @code{NULL} else return @code{expr1}.
This is the same as @code{CASE WHEN x = y THEN NULL ELSE x END}:
This is the same as @code{CASE WHEN x = y THEN NULL ELSE x END}:
@example
@example
mysql>
select
NULLIF(1,1);
mysql>
SELECT
NULLIF(1,1);
-> NULL
-> NULL
mysql>
select
NULLIF(1,2);
mysql>
SELECT
NULLIF(1,2);
-> 1
-> 1
@end example
@end example
...
@@ -30352,11 +30352,11 @@ If @code{expr1} is TRUE (@code{expr1 <> 0} and @code{expr1 <> NULL}) then
...
@@ -30352,11 +30352,11 @@ If @code{expr1} is TRUE (@code{expr1 <> 0} and @code{expr1 <> NULL}) then
in which it is used:
in which it is used:
@example
@example
mysql>
select
IF(1>2,2,3);
mysql>
SELECT
IF(1>2,2,3);
-> 3
-> 3
mysql>
select
IF(1<2,'yes','no');
mysql>
SELECT
IF(1<2,'yes','no');
-> 'yes'
-> 'yes'
mysql>
select IF(strcmp
('test','test1'),'no','yes');
mysql>
SELECT IF(STRCMP
('test','test1'),'no','yes');
-> 'no'
-> 'no'
@end example
@end example
...
@@ -30365,9 +30365,9 @@ testing floating-point or string values, you should do so using a comparison
...
@@ -30365,9 +30365,9 @@ testing floating-point or string values, you should do so using a comparison
operation:
operation:
@example
@example
mysql>
select
IF(0.1,1,0);
mysql>
SELECT
IF(0.1,1,0);
-> 0
-> 0
mysql>
select
IF(0.1<>0,1,0);
mysql>
SELECT
IF(0.1<>0,1,0);
-> 1
-> 1
@end example
@end example
...
@@ -30435,11 +30435,11 @@ Returns the ASCII code value of the leftmost character of the string
...
@@ -30435,11 +30435,11 @@ Returns the ASCII code value of the leftmost character of the string
@code{NULL} if @code{str} is @code{NULL}:
@code{NULL} if @code{str} is @code{NULL}:
@example
@example
mysql>
select
ASCII('2');
mysql>
SELECT
ASCII('2');
-> 50
-> 50
mysql>
select
ASCII(2);
mysql>
SELECT
ASCII(2);
-> 50
-> 50
mysql>
select
ASCII('dx');
mysql>
SELECT
ASCII('dx');
-> 100
-> 100
@end example
@end example
...
@@ -30455,7 +30455,7 @@ If the leftmost character is not a multi-byte character, returns the same
...
@@ -30455,7 +30455,7 @@ If the leftmost character is not a multi-byte character, returns the same
value that the @code{ASCII()} function does:
value that the @code{ASCII()} function does:
@example
@example
mysql>
select
ORD('2');
mysql>
SELECT
ORD('2');
-> 50
-> 50
@end example
@end example
...
@@ -30471,13 +30471,13 @@ signed number. Otherwise, @code{N} is treated as unsigned. @code{CONV} works
...
@@ -30471,13 +30471,13 @@ signed number. Otherwise, @code{N} is treated as unsigned. @code{CONV} works
with 64-bit precision:
with 64-bit precision:
@example
@example
mysql>
select
CONV("a",16,2);
mysql>
SELECT
CONV("a",16,2);
-> '1010'
-> '1010'
mysql>
select
CONV("6E",18,8);
mysql>
SELECT
CONV("6E",18,8);
-> '172'
-> '172'
mysql>
select
CONV(-17,10,-18);
mysql>
SELECT
CONV(-17,10,-18);
-> '-H'
-> '-H'
mysql>
select
CONV(10+"10"+'10'+0xa,10,10);
mysql>
SELECT
CONV(10+"10"+'10'+0xa,10,10);
-> '40'
-> '40'
@end example
@end example
...
@@ -30488,7 +30488,7 @@ Returns a string representation of the binary value of @code{N}, where
...
@@ -30488,7 +30488,7 @@ Returns a string representation of the binary value of @code{N}, where
@code{CONV(N,10,2)}. Returns @code{NULL} if @code{N} is @code{NULL}:
@code{CONV(N,10,2)}. Returns @code{NULL} if @code{N} is @code{NULL}:
@example
@example
mysql>
select
BIN(12);
mysql>
SELECT
BIN(12);
-> '1100'
-> '1100'
@end example
@end example
...
@@ -30499,7 +30499,7 @@ Returns a string representation of the octal value of @code{N}, where
...
@@ -30499,7 +30499,7 @@ Returns a string representation of the octal value of @code{N}, where
Returns @code{NULL} if @code{N} is @code{NULL}:
Returns @code{NULL} if @code{N} is @code{NULL}:
@example
@example
mysql>
select
OCT(12);
mysql>
SELECT
OCT(12);
-> '14'
-> '14'
@end example
@end example
...
@@ -30515,11 +30515,11 @@ character in N_OR_S is converted to 2 hexadecimal digits. This is the
...
@@ -30515,11 +30515,11 @@ character in N_OR_S is converted to 2 hexadecimal digits. This is the
invers of the @code{0xff} strings.
invers of the @code{0xff} strings.
@example
@example
mysql>
select
HEX(255);
mysql>
SELECT
HEX(255);
-> 'FF'
-> 'FF'
mysql>
select
HEX("abc");
mysql>
SELECT
HEX("abc");
-> 616263
-> 616263
mysql>
select
0x616263;
mysql>
SELECT
0x616263;
-> "abc"
-> "abc"
@end example
@end example
...
@@ -30530,9 +30530,9 @@ consisting of the characters given by the ASCII code values of those
...
@@ -30530,9 +30530,9 @@ consisting of the characters given by the ASCII code values of those
integers. @code{NULL} values are skipped:
integers. @code{NULL} values are skipped:
@example
@example
mysql>
select
CHAR(77,121,83,81,'76');
mysql>
SELECT
CHAR(77,121,83,81,'76');
-> 'MySQL'
-> 'MySQL'
mysql>
select
CHAR(77,77.3,'77.3');
mysql>
SELECT
CHAR(77,77.3,'77.3');
-> 'MMM'
-> 'MMM'
@end example
@end example
...
@@ -30543,11 +30543,11 @@ Returns the string that results from concatenating the arguments. Returns
...
@@ -30543,11 +30543,11 @@ Returns the string that results from concatenating the arguments. Returns
A numeric argument is converted to the equivalent string form:
A numeric argument is converted to the equivalent string form:
@example
@example
mysql>
select
CONCAT('My', 'S', 'QL');
mysql>
SELECT
CONCAT('My', 'S', 'QL');
-> 'MySQL'
-> 'MySQL'
mysql>
select
CONCAT('My', NULL, 'QL');
mysql>
SELECT
CONCAT('My', NULL, 'QL');
-> NULL
-> NULL
mysql>
select
CONCAT(14.3);
mysql>
SELECT
CONCAT(14.3);
-> '14.3'
-> '14.3'
@end example
@end example
...
@@ -30563,9 +30563,9 @@ separator argument. The separator will be added between the strings to be
...
@@ -30563,9 +30563,9 @@ separator argument. The separator will be added between the strings to be
concatenated:
concatenated:
@example
@example
mysql>
select
CONCAT_WS(",","First name","Second name","Last Name");
mysql>
SELECT
CONCAT_WS(",","First name","Second name","Last Name");
-> 'First name,Second name,Last Name'
-> 'First name,Second name,Last Name'
mysql>
select
CONCAT_WS(",","First name",NULL,"Last Name");
mysql>
SELECT
CONCAT_WS(",","First name",NULL,"Last Name");
-> 'First name,Last Name'
-> 'First name,Last Name'
@end example
@end example
...
@@ -30580,9 +30580,9 @@ mysql> select CONCAT_WS(",","First name",NULL,"Last Name");
...
@@ -30580,9 +30580,9 @@ mysql> select CONCAT_WS(",","First name",NULL,"Last Name");
Returns the length of the string @code{str}:
Returns the length of the string @code{str}:
@example
@example
mysql>
select
LENGTH('text');
mysql>
SELECT
LENGTH('text');
-> 4
-> 4
mysql>
select
OCTET_LENGTH('text');
mysql>
SELECT
OCTET_LENGTH('text');
-> 4
-> 4
@end example
@end example
...
@@ -30594,7 +30594,7 @@ characters are only counted once.
...
@@ -30594,7 +30594,7 @@ characters are only counted once.
Returns the length of the string @code{str} in bits:
Returns the length of the string @code{str} in bits:
@example
@example
mysql>
select
BIT_LENGTH('text');
mysql>
SELECT
BIT_LENGTH('text');
-> 32
-> 32
@end example
@end example
...
@@ -30606,9 +30606,9 @@ Returns the position of the first occurrence of substring @code{substr}
...
@@ -30606,9 +30606,9 @@ Returns the position of the first occurrence of substring @code{substr}
in string @code{str}. Returns @code{0} if @code{substr} is not in @code{str}:
in string @code{str}. Returns @code{0} if @code{substr} is not in @code{str}:
@example
@example
mysql>
select
LOCATE('bar', 'foobarbar');
mysql>
SELECT
LOCATE('bar', 'foobarbar');
-> 4
-> 4
mysql>
select
LOCATE('xbar', 'foobar');
mysql>
SELECT
LOCATE('xbar', 'foobar');
-> 0
-> 0
@end example
@end example
...
@@ -30623,7 +30623,7 @@ string @code{str}, starting at position @code{pos}.
...
@@ -30623,7 +30623,7 @@ string @code{str}, starting at position @code{pos}.
Returns @code{0} if @code{substr} is not in @code{str}:
Returns @code{0} if @code{substr} is not in @code{str}:
@example
@example
mysql>
select
LOCATE('bar', 'foobarbar',5);
mysql>
SELECT
LOCATE('bar', 'foobarbar',5);
-> 7
-> 7
@end example
@end example
...
@@ -30638,9 +30638,9 @@ string @code{str}. This is the same as the two-argument form of
...
@@ -30638,9 +30638,9 @@ string @code{str}. This is the same as the two-argument form of
@code{LOCATE()}, except that the arguments are swapped:
@code{LOCATE()}, except that the arguments are swapped:
@example
@example
mysql>
select
INSTR('foobarbar', 'bar');
mysql>
SELECT
INSTR('foobarbar', 'bar');
-> 4
-> 4
mysql>
select
INSTR('xbar', 'foobar');
mysql>
SELECT
INSTR('xbar', 'foobar');
-> 0
-> 0
@end example
@end example
...
@@ -30655,7 +30655,7 @@ until @code{str} is @code{len} characters long. If @code{str} is longer
...
@@ -30655,7 +30655,7 @@ until @code{str} is @code{len} characters long. If @code{str} is longer
than @code{len'} then it will be shortened to @code{len} characters.
than @code{len'} then it will be shortened to @code{len} characters.
@example
@example
mysql>
select
LPAD('hi',4,'??');
mysql>
SELECT
LPAD('hi',4,'??');
-> '??hi'
-> '??hi'
@end example
@end example
...
@@ -30667,7 +30667,7 @@ Returns the string @code{str}, right-padded with the string
...
@@ -30667,7 +30667,7 @@ Returns the string @code{str}, right-padded with the string
@code{len} characters.
@code{len} characters.
@example
@example
mysql>
select
RPAD('hi',5,'?');
mysql>
SELECT
RPAD('hi',5,'?');
-> 'hi???'
-> 'hi???'
@end example
@end example
...
@@ -30676,7 +30676,7 @@ mysql> select RPAD('hi',5,'?');
...
@@ -30676,7 +30676,7 @@ mysql> select RPAD('hi',5,'?');
Returns the leftmost @code{len} characters from the string @code{str}:
Returns the leftmost @code{len} characters from the string @code{str}:
@example
@example
mysql>
select
LEFT('foobarbar', 5);
mysql>
SELECT
LEFT('foobarbar', 5);
-> 'fooba'
-> 'fooba'
@end example
@end example
...
@@ -30687,7 +30687,7 @@ This function is multi-byte safe.
...
@@ -30687,7 +30687,7 @@ This function is multi-byte safe.
Returns the rightmost @code{len} characters from the string @code{str}:
Returns the rightmost @code{len} characters from the string @code{str}:
@example
@example
mysql>
select
RIGHT('foobarbar', 4);
mysql>
SELECT
RIGHT('foobarbar', 4);
-> 'rbar'
-> 'rbar'
@end example
@end example
...
@@ -30703,7 +30703,7 @@ starting at position @code{pos}.
...
@@ -30703,7 +30703,7 @@ starting at position @code{pos}.
The variant form that uses @code{FROM} is ANSI SQL92 syntax:
The variant form that uses @code{FROM} is ANSI SQL92 syntax:
@example
@example
mysql>
select
SUBSTRING('Quadratically',5,6);
mysql>
SELECT
SUBSTRING('Quadratically',5,6);
-> 'ratica'
-> 'ratica'
@end example
@end example
...
@@ -30715,9 +30715,9 @@ This function is multi-byte safe.
...
@@ -30715,9 +30715,9 @@ This function is multi-byte safe.
Returns a substring from string @code{str} starting at position @code{pos}:
Returns a substring from string @code{str} starting at position @code{pos}:
@example
@example
mysql>
select
SUBSTRING('Quadratically',5);
mysql>
SELECT
SUBSTRING('Quadratically',5);
-> 'ratically'
-> 'ratically'
mysql>
select
SUBSTRING('foobarbar' FROM 4);
mysql>
SELECT
SUBSTRING('foobarbar' FROM 4);
-> 'barbar'
-> 'barbar'
@end example
@end example
...
@@ -30733,9 +30733,9 @@ If @code{count} is negative, everything to the right of the final delimiter
...
@@ -30733,9 +30733,9 @@ If @code{count} is negative, everything to the right of the final delimiter
(counting from the right) is returned:
(counting from the right) is returned:
@example
@example
mysql>
select
SUBSTRING_INDEX('www.mysql.com', '.', 2);
mysql>
SELECT
SUBSTRING_INDEX('www.mysql.com', '.', 2);
-> 'www.mysql'
-> 'www.mysql'
mysql>
select
SUBSTRING_INDEX('www.mysql.com', '.', -2);
mysql>
SELECT
SUBSTRING_INDEX('www.mysql.com', '.', -2);
-> 'mysql.com'
-> 'mysql.com'
@end example
@end example
...
@@ -30746,7 +30746,7 @@ This function is multi-byte safe.
...
@@ -30746,7 +30746,7 @@ This function is multi-byte safe.
Returns the string @code{str} with leading space characters removed:
Returns the string @code{str} with leading space characters removed:
@example
@example
mysql>
select
LTRIM(' barbar');
mysql>
SELECT
LTRIM(' barbar');
-> 'barbar'
-> 'barbar'
@end example
@end example
...
@@ -30755,7 +30755,7 @@ mysql> select LTRIM(' barbar');
...
@@ -30755,7 +30755,7 @@ mysql> select LTRIM(' barbar');
Returns the string @code{str} with trailing space characters removed:
Returns the string @code{str} with trailing space characters removed:
@example
@example
mysql>
select
RTRIM('barbar ');
mysql>
SELECT
RTRIM('barbar ');
-> 'barbar'
-> 'barbar'
@end example
@end example
...
@@ -30769,13 +30769,13 @@ removed. If none of the specifiers @code{BOTH}, @code{LEADING} or
...
@@ -30769,13 +30769,13 @@ removed. If none of the specifiers @code{BOTH}, @code{LEADING} or
specified, spaces are removed:
specified, spaces are removed:
@example
@example
mysql>
select
TRIM(' bar ');
mysql>
SELECT
TRIM(' bar ');
-> 'bar'
-> 'bar'
mysql>
select
TRIM(LEADING 'x' FROM 'xxxbarxxx');
mysql>
SELECT
TRIM(LEADING 'x' FROM 'xxxbarxxx');
-> 'barxxx'
-> 'barxxx'
mysql>
select
TRIM(BOTH 'x' FROM 'xxxbarxxx');
mysql>
SELECT
TRIM(BOTH 'x' FROM 'xxxbarxxx');
-> 'bar'
-> 'bar'
mysql>
select
TRIM(TRAILING 'xyz' FROM 'barxxyz');
mysql>
SELECT
TRIM(TRAILING 'xyz' FROM 'barxxyz');
-> 'barx'
-> 'barx'
@end example
@end example
...
@@ -30792,9 +30792,9 @@ in the given string. All international alpha characters outside the A-Z range
...
@@ -30792,9 +30792,9 @@ in the given string. All international alpha characters outside the A-Z range
are treated as vowels:
are treated as vowels:
@example
@example
mysql>
select
SOUNDEX('Hello');
mysql>
SELECT
SOUNDEX('Hello');
-> 'H400'
-> 'H400'
mysql>
select
SOUNDEX('Quadratically');
mysql>
SELECT
SOUNDEX('Quadratically');
-> 'Q36324'
-> 'Q36324'
@end example
@end example
...
@@ -30803,7 +30803,7 @@ mysql> select SOUNDEX('Quadratically');
...
@@ -30803,7 +30803,7 @@ mysql> select SOUNDEX('Quadratically');
Returns a string consisting of @code{N} space characters:
Returns a string consisting of @code{N} space characters:
@example
@example
mysql>
select
SPACE(6);
mysql>
SELECT
SPACE(6);
-> ' '
-> ' '
@end example
@end example
...
@@ -30813,7 +30813,7 @@ Returns the string @code{str} with all all occurrences of the string
...
@@ -30813,7 +30813,7 @@ Returns the string @code{str} with all all occurrences of the string
@code{from_str} replaced by the string @code{to_str}:
@code{from_str} replaced by the string @code{to_str}:
@example
@example
mysql>
select
REPLACE('www.mysql.com', 'w', 'Ww');
mysql>
SELECT
REPLACE('www.mysql.com', 'w', 'Ww');
-> 'WwWwWw.mysql.com'
-> 'WwWwWw.mysql.com'
@end example
@end example
...
@@ -30826,7 +30826,7 @@ times. If @code{count <= 0}, returns an empty string. Returns @code{NULL} if
...
@@ -30826,7 +30826,7 @@ times. If @code{count <= 0}, returns an empty string. Returns @code{NULL} if
@code{str} or @code{count} are @code{NULL}:
@code{str} or @code{count} are @code{NULL}:
@example
@example
mysql>
select
REPEAT('MySQL', 3);
mysql>
SELECT
REPEAT('MySQL', 3);
-> 'MySQLMySQLMySQL'
-> 'MySQLMySQLMySQL'
@end example
@end example
...
@@ -30835,7 +30835,7 @@ mysql> select REPEAT('MySQL', 3);
...
@@ -30835,7 +30835,7 @@ mysql> select REPEAT('MySQL', 3);
Returns the string @code{str} with the order of the characters reversed:
Returns the string @code{str} with the order of the characters reversed:
@example
@example
mysql>
select
REVERSE('abc');
mysql>
SELECT
REVERSE('abc');
-> 'cba'
-> 'cba'
@end example
@end example
...
@@ -30848,7 +30848,7 @@ Returns the string @code{str}, with the substring beginning at position
...
@@ -30848,7 +30848,7 @@ Returns the string @code{str}, with the substring beginning at position
@code{newstr}:
@code{newstr}:
@example
@example
mysql>
select
INSERT('Quadratic', 3, 4, 'What');
mysql>
SELECT
INSERT('Quadratic', 3, 4, 'What');
-> 'QuWhattic'
-> 'QuWhattic'
@end example
@end example
...
@@ -30862,9 +30862,9 @@ or greater than the number of arguments. @code{ELT()} is the complement of
...
@@ -30862,9 +30862,9 @@ or greater than the number of arguments. @code{ELT()} is the complement of
@code{FIELD()}:
@code{FIELD()}:
@example
@example
mysql>
select
ELT(1, 'ej', 'Heja', 'hej', 'foo');
mysql>
SELECT
ELT(1, 'ej', 'Heja', 'hej', 'foo');
-> 'ej'
-> 'ej'
mysql>
select
ELT(4, 'ej', 'Heja', 'hej', 'foo');
mysql>
SELECT
ELT(4, 'ej', 'Heja', 'hej', 'foo');
-> 'foo'
-> 'foo'
@end example
@end example
...
@@ -30876,9 +30876,9 @@ Returns @code{0} if @code{str} is not found.
...
@@ -30876,9 +30876,9 @@ Returns @code{0} if @code{str} is not found.
@code{FIELD()} is the complement of @code{ELT()}:
@code{FIELD()} is the complement of @code{ELT()}:
@example
@example
mysql>
select
FIELD('ej', 'Hej', 'ej', 'Heja', 'hej', 'foo');
mysql>
SELECT
FIELD('ej', 'Hej', 'ej', 'Heja', 'hej', 'foo');
-> 2
-> 2
mysql>
select
FIELD('fo', 'Hej', 'ej', 'Heja', 'hej', 'foo');
mysql>
SELECT
FIELD('fo', 'Hej', 'ej', 'Heja', 'hej', 'foo');
-> 0
-> 0
@end example
@end example
...
@@ -30924,7 +30924,7 @@ with 'separator' (default ',') and only 'number_of_bits' (default 64) of
...
@@ -30924,7 +30924,7 @@ with 'separator' (default ',') and only 'number_of_bits' (default 64) of
'bits' is used:
'bits' is used:
@example
@example
mysql>
select
EXPORT_SET(5,'Y','N',',',4)
mysql>
SELECT
EXPORT_SET(5,'Y','N',',',4)
-> Y,N,Y,N
-> Y,N,Y,N
@end example
@end example
...
@@ -30937,7 +30937,7 @@ according to the current character set mapping (the default is ISO-8859-1
...
@@ -30937,7 +30937,7 @@ according to the current character set mapping (the default is ISO-8859-1
Latin1):
Latin1):
@example
@example
mysql>
select
LCASE('QUADRATICALLY');
mysql>
SELECT
LCASE('QUADRATICALLY');
-> 'quadratically'
-> 'quadratically'
@end example
@end example
...
@@ -30952,7 +30952,7 @@ according to the current character set mapping (the default is ISO-8859-1
...
@@ -30952,7 +30952,7 @@ according to the current character set mapping (the default is ISO-8859-1
Latin1):
Latin1):
@example
@example
mysql>
select
UCASE('Hej');
mysql>
SELECT
UCASE('Hej');
-> 'HEJ'
-> 'HEJ'
@end example
@end example
...
@@ -30970,7 +30970,7 @@ If the file doesn't exist or can't be read due to one of the above reasons,
...
@@ -30970,7 +30970,7 @@ If the file doesn't exist or can't be read due to one of the above reasons,
the function returns @code{NULL}:
the function returns @code{NULL}:
@example
@example
mysql> UPDATE t
able
_name
mysql> UPDATE t
bl
_name
SET blob_column=LOAD_FILE("/tmp/picture")
SET blob_column=LOAD_FILE("/tmp/picture")
WHERE id=1;
WHERE id=1;
@end example
@end example
...
@@ -31032,9 +31032,9 @@ in the pattern:
...
@@ -31032,9 +31032,9 @@ in the pattern:
@end multitable
@end multitable
@example
@example
mysql>
select
'David!' LIKE 'David_';
mysql>
SELECT
'David!' LIKE 'David_';
-> 1
-> 1
mysql>
select
'David!' LIKE '%D%v%';
mysql>
SELECT
'David!' LIKE '%D%v%';
-> 1
-> 1
@end example
@end example
...
@@ -31049,16 +31049,16 @@ with the escape character. If you don't specify the @code{ESCAPE} character,
...
@@ -31049,16 +31049,16 @@ with the escape character. If you don't specify the @code{ESCAPE} character,
@end multitable
@end multitable
@example
@example
mysql>
select
'David!' LIKE 'David\_';
mysql>
SELECT
'David!' LIKE 'David\_';
-> 0
-> 0
mysql>
select
'David_' LIKE 'David\_';
mysql>
SELECT
'David_' LIKE 'David\_';
-> 1
-> 1
@end example
@end example
To specify a different escape character, use the @code{ESCAPE} clause:
To specify a different escape character, use the @code{ESCAPE} clause:
@example
@example
mysql>
select
'David_' LIKE 'David|_' ESCAPE '|';
mysql>
SELECT
'David_' LIKE 'David|_' ESCAPE '|';
-> 1
-> 1
@end example
@end example
...
@@ -31066,7 +31066,7 @@ The following two statements illustrate that string comparisons are
...
@@ -31066,7 +31066,7 @@ The following two statements illustrate that string comparisons are
case insensitive unless one of the operands is a binary string:
case insensitive unless one of the operands is a binary string:
@example
@example
mysql>
select
'abc' LIKE 'ABC';
mysql>
SELECT
'abc' LIKE 'ABC';
-> 1
-> 1
mysql> SELECT 'abc' LIKE BINARY 'ABC';
mysql> SELECT 'abc' LIKE BINARY 'ABC';
-> 0
-> 0
...
@@ -31076,7 +31076,7 @@ mysql> SELECT 'abc' LIKE BINARY 'ABC';
...
@@ -31076,7 +31076,7 @@ mysql> SELECT 'abc' LIKE BINARY 'ABC';
extension to the ANSI SQL @code{LIKE}.)
extension to the ANSI SQL @code{LIKE}.)
@example
@example
mysql>
select
10 LIKE '1%';
mysql>
SELECT
10 LIKE '1%';
-> 1
-> 1
@end example
@end example
...
@@ -31107,15 +31107,15 @@ you use in your @code{REGEXP} strings. As of MySQL Version 3.23.4,
...
@@ -31107,15 +31107,15 @@ you use in your @code{REGEXP} strings. As of MySQL Version 3.23.4,
@code{REGEXP} is case insensitive for normal (not binary) strings:
@code{REGEXP} is case insensitive for normal (not binary) strings:
@example
@example
mysql>
select
'Monty!' REGEXP 'm%y%%';
mysql>
SELECT
'Monty!' REGEXP 'm%y%%';
-> 0
-> 0
mysql>
select
'Monty!' REGEXP '.*';
mysql>
SELECT
'Monty!' REGEXP '.*';
-> 1
-> 1
mysql>
select
'new*\n*line' REGEXP 'new\\*.\\*line';
mysql>
SELECT
'new*\n*line' REGEXP 'new\\*.\\*line';
-> 1
-> 1
mysql>
select
"a" REGEXP "A", "a" REGEXP BINARY "A";
mysql>
SELECT
"a" REGEXP "A", "a" REGEXP BINARY "A";
-> 1 0
-> 1 0
mysql>
select
"a" REGEXP "^[a-d]";
mysql>
SELECT
"a" REGEXP "^[a-d]";
-> 1
-> 1
@end example
@end example
...
@@ -31136,11 +31136,11 @@ argument is smaller than the second according to the current sort order,
...
@@ -31136,11 +31136,11 @@ argument is smaller than the second according to the current sort order,
and @code{1} otherwise:
and @code{1} otherwise:
@example
@example
mysql>
select
STRCMP('text', 'text2');
mysql>
SELECT
STRCMP('text', 'text2');
-> -1
-> -1
mysql>
select
STRCMP('text2', 'text');
mysql>
SELECT
STRCMP('text2', 'text');
-> 1
-> 1
mysql>
select
STRCMP('text', 'text');
mysql>
SELECT
STRCMP('text', 'text');
-> 0
-> 0
@end example
@end example
...
@@ -31171,9 +31171,9 @@ The @code{BINARY} operator casts the string following it to a binary string.
...
@@ -31171,9 +31171,9 @@ The @code{BINARY} operator casts the string following it to a binary string.
This is an easy way to force a column comparison to be case sensitive even
This is an easy way to force a column comparison to be case sensitive even
if the column isn't defined as @code{BINARY} or @code{BLOB}:
if the column isn't defined as @code{BINARY} or @code{BLOB}:
@example
@example
mysql>
select
"a" = "A";
mysql>
SELECT
"a" = "A";
-> 1
-> 1
mysql>
select
BINARY "a" = "A";
mysql>
SELECT
BINARY "a" = "A";
-> 0
-> 0
@end example
@end example
...
@@ -31224,7 +31224,7 @@ is also an integer, the result will be an unsigned integer.
...
@@ -31224,7 +31224,7 @@ is also an integer, the result will be an unsigned integer.
@item +
@item +
Addition:
Addition:
@example
@example
mysql>
select
3+5;
mysql>
SELECT
3+5;
-> 8
-> 8
@end example
@end example
...
@@ -31233,7 +31233,7 @@ mysql> select 3+5;
...
@@ -31233,7 +31233,7 @@ mysql> select 3+5;
@item -
@item -
Subtraction:
Subtraction:
@example
@example
mysql>
select
3-5;
mysql>
SELECT
3-5;
-> -2
-> -2
@end example
@end example
...
@@ -31242,11 +31242,11 @@ mysql> select 3-5;
...
@@ -31242,11 +31242,11 @@ mysql> select 3-5;
@item *
@item *
Multiplication:
Multiplication:
@example
@example
mysql>
select
3*5;
mysql>
SELECT
3*5;
-> 15
-> 15
mysql>
select
18014398509481984*18014398509481984.0;
mysql>
SELECT
18014398509481984*18014398509481984.0;
-> 324518553658426726783156020576256.0
-> 324518553658426726783156020576256.0
mysql>
select
18014398509481984*18014398509481984;
mysql>
SELECT
18014398509481984*18014398509481984;
-> 0
-> 0
@end example
@end example
...
@@ -31259,14 +31259,14 @@ calculations.
...
@@ -31259,14 +31259,14 @@ calculations.
@item /
@item /
Division:
Division:
@example
@example
mysql>
select
3/5;
mysql>
SELECT
3/5;
-> 0.60
-> 0.60
@end example
@end example
Division by zero produces a @code{NULL} result:
Division by zero produces a @code{NULL} result:
@example
@example
mysql>
select
102/(1-1);
mysql>
SELECT
102/(1-1);
-> NULL
-> NULL
@end example
@end example
...
@@ -31289,7 +31289,7 @@ All mathematical functions return @code{NULL} in case of an error.
...
@@ -31289,7 +31289,7 @@ All mathematical functions return @code{NULL} in case of an error.
@item -
@item -
Unary minus. Changes the sign of the argument:
Unary minus. Changes the sign of the argument:
@example
@example
mysql>
select
- 2;
mysql>
SELECT
- 2;
-> -2
-> -2
@end example
@end example
...
@@ -31301,9 +31301,9 @@ may have the value of @code{-2^63}!
...
@@ -31301,9 +31301,9 @@ may have the value of @code{-2^63}!
@item ABS(X)
@item ABS(X)
Returns the absolute value of @code{X}:
Returns the absolute value of @code{X}:
@example
@example
mysql>
select
ABS(2);
mysql>
SELECT
ABS(2);
-> 2
-> 2
mysql>
select
ABS(-32);
mysql>
SELECT
ABS(-32);
-> 32
-> 32
@end example
@end example
...
@@ -31314,11 +31314,11 @@ This function is safe to use with @code{BIGINT} values.
...
@@ -31314,11 +31314,11 @@ This function is safe to use with @code{BIGINT} values.
Returns the sign of the argument as @code{-1}, @code{0}, or @code{1}, depending
Returns the sign of the argument as @code{-1}, @code{0}, or @code{1}, depending
on whether @code{X} is negative, zero, or positive:
on whether @code{X} is negative, zero, or positive:
@example
@example
mysql>
select
SIGN(-32);
mysql>
SELECT
SIGN(-32);
-> -1
-> -1
mysql>
select
SIGN(0);
mysql>
SELECT
SIGN(0);
-> 0
-> 0
mysql>
select
SIGN(234);
mysql>
SELECT
SIGN(234);
-> 1
-> 1
@end example
@end example
...
@@ -31330,11 +31330,11 @@ mysql> select SIGN(234);
...
@@ -31330,11 +31330,11 @@ mysql> select SIGN(234);
Modulo (like the @code{%} operator in C).
Modulo (like the @code{%} operator in C).
Returns the remainder of @code{N} divided by @code{M}:
Returns the remainder of @code{N} divided by @code{M}:
@example
@example
mysql>
select
MOD(234, 10);
mysql>
SELECT
MOD(234, 10);
-> 4
-> 4
mysql>
select
253 % 7;
mysql>
SELECT
253 % 7;
-> 1
-> 1
mysql>
select
MOD(29,9);
mysql>
SELECT
MOD(29,9);
-> 2
-> 2
@end example
@end example
...
@@ -31344,9 +31344,9 @@ This function is safe to use with @code{BIGINT} values.
...
@@ -31344,9 +31344,9 @@ This function is safe to use with @code{BIGINT} values.
@item FLOOR(X)
@item FLOOR(X)
Returns the largest integer value not greater than @code{X}:
Returns the largest integer value not greater than @code{X}:
@example
@example
mysql>
select
FLOOR(1.23);
mysql>
SELECT
FLOOR(1.23);
-> 1
-> 1
mysql>
select
FLOOR(-1.23);
mysql>
SELECT
FLOOR(-1.23);
-> -2
-> -2
@end example
@end example
...
@@ -31356,9 +31356,9 @@ Note that the return value is converted to a @code{BIGINT}!
...
@@ -31356,9 +31356,9 @@ Note that the return value is converted to a @code{BIGINT}!
@item CEILING(X)
@item CEILING(X)
Returns the smallest integer value not less than @code{X}:
Returns the smallest integer value not less than @code{X}:
@example
@example
mysql>
select
CEILING(1.23);
mysql>
SELECT
CEILING(1.23);
-> 2
-> 2
mysql>
select
CEILING(-1.23);
mysql>
SELECT
CEILING(-1.23);
-> -1
-> -1
@end example
@end example
...
@@ -31368,11 +31368,11 @@ Note that the return value is converted to a @code{BIGINT}!
...
@@ -31368,11 +31368,11 @@ Note that the return value is converted to a @code{BIGINT}!
@item ROUND(X)
@item ROUND(X)
Returns the argument @code{X}, rounded to the nearest integer:
Returns the argument @code{X}, rounded to the nearest integer:
@example
@example
mysql>
select
ROUND(-1.23);
mysql>
SELECT
ROUND(-1.23);
-> -1
-> -1
mysql>
select
ROUND(-1.58);
mysql>
SELECT
ROUND(-1.58);
-> -2
-> -2
mysql>
select
ROUND(1.58);
mysql>
SELECT
ROUND(1.58);
-> 2
-> 2
@end example
@end example
...
@@ -31390,9 +31390,9 @@ If @code{D} is @code{0}, the result will have no decimal point or fractional
...
@@ -31390,9 +31390,9 @@ If @code{D} is @code{0}, the result will have no decimal point or fractional
part:
part:
@example
@example
mysql>
select
ROUND(1.298, 1);
mysql>
SELECT
ROUND(1.298, 1);
-> 1.3
-> 1.3
mysql>
select
ROUND(1.298, 0);
mysql>
SELECT
ROUND(1.298, 0);
-> 1
-> 1
@end example
@end example
...
@@ -31401,18 +31401,18 @@ mysql> select ROUND(1.298, 0);
...
@@ -31401,18 +31401,18 @@ mysql> select ROUND(1.298, 0);
Returns the value of @code{e} (the base of natural logarithms) raised to
Returns the value of @code{e} (the base of natural logarithms) raised to
the power of @code{X}:
the power of @code{X}:
@example
@example
mysql>
select
EXP(2);
mysql>
SELECT
EXP(2);
-> 7.389056
-> 7.389056
mysql>
select
EXP(-2);
mysql>
SELECT
EXP(-2);
-> 0.135335
-> 0.135335
@end example
@end example
@findex LOG()
@findex LOG()
@item LOG(X)
@item LOG(X)
Returns the natural logarithm of @code{X}:
Returns the natural logarithm of @code{X}:
@example
@example
mysql>
select
LOG(2);
mysql>
SELECT
LOG(2);
-> 0.693147
-> 0.693147
mysql>
select
LOG(-2);
mysql>
SELECT
LOG(-2);
-> NULL
-> NULL
@end example
@end example
If you want the log of a number @code{X} to some arbitary base @code{B}, use
If you want the log of a number @code{X} to some arbitary base @code{B}, use
...
@@ -31422,11 +31422,11 @@ the formula @code{LOG(X)/LOG(B)}.
...
@@ -31422,11 +31422,11 @@ the formula @code{LOG(X)/LOG(B)}.
@item LOG10(X)
@item LOG10(X)
Returns the base-10 logarithm of @code{X}:
Returns the base-10 logarithm of @code{X}:
@example
@example
mysql>
select
LOG10(2);
mysql>
SELECT
LOG10(2);
-> 0.301030
-> 0.301030
mysql>
select
LOG10(100);
mysql>
SELECT
LOG10(100);
-> 2.000000
-> 2.000000
mysql>
select
LOG10(-100);
mysql>
SELECT
LOG10(-100);
-> NULL
-> NULL
@end example
@end example
...
@@ -31436,9 +31436,9 @@ mysql> select LOG10(-100);
...
@@ -31436,9 +31436,9 @@ mysql> select LOG10(-100);
@itemx POWER(X,Y)
@itemx POWER(X,Y)
Returns the value of @code{X} raised to the power of @code{Y}:
Returns the value of @code{X} raised to the power of @code{Y}:
@example
@example
mysql>
select
POW(2,2);
mysql>
SELECT
POW(2,2);
-> 4.000000
-> 4.000000
mysql>
select
POW(2,-2);
mysql>
SELECT
POW(2,-2);
-> 0.250000
-> 0.250000
@end example
@end example
...
@@ -31446,9 +31446,9 @@ mysql> select POW(2,-2);
...
@@ -31446,9 +31446,9 @@ mysql> select POW(2,-2);
@item SQRT(X)
@item SQRT(X)
Returns the non-negative square root of @code{X}:
Returns the non-negative square root of @code{X}:
@example
@example
mysql>
select
SQRT(4);
mysql>
SELECT
SQRT(4);
-> 2.000000
-> 2.000000
mysql>
select
SQRT(20);
mysql>
SELECT
SQRT(20);
-> 4.472136
-> 4.472136
@end example
@end example
...
@@ -31457,7 +31457,7 @@ mysql> select SQRT(20);
...
@@ -31457,7 +31457,7 @@ mysql> select SQRT(20);
Returns the value of PI. The default shown number of decimals is 5, but
Returns the value of PI. The default shown number of decimals is 5, but
MySQL internally uses the full double precession for PI.
MySQL internally uses the full double precession for PI.
@example
@example
mysql>
select
PI();
mysql>
SELECT
PI();
-> 3.141593
-> 3.141593
mysql> SELECT PI()+0.000000000000000000;
mysql> SELECT PI()+0.000000000000000000;
-> 3.141592653589793116
-> 3.141592653589793116
...
@@ -31467,7 +31467,7 @@ mysql> SELECT PI()+0.000000000000000000;
...
@@ -31467,7 +31467,7 @@ mysql> SELECT PI()+0.000000000000000000;
@item COS(X)
@item COS(X)
Returns the cosine of @code{X}, where @code{X} is given in radians:
Returns the cosine of @code{X}, where @code{X} is given in radians:
@example
@example
mysql>
select
COS(PI());
mysql>
SELECT
COS(PI());
-> -1.000000
-> -1.000000
@end example
@end example
...
@@ -31475,7 +31475,7 @@ mysql> select COS(PI());
...
@@ -31475,7 +31475,7 @@ mysql> select COS(PI());
@item SIN(X)
@item SIN(X)
Returns the sine of @code{X}, where @code{X} is given in radians:
Returns the sine of @code{X}, where @code{X} is given in radians:
@example
@example
mysql>
select
SIN(PI());
mysql>
SELECT
SIN(PI());
-> 0.000000
-> 0.000000
@end example
@end example
...
@@ -31483,7 +31483,7 @@ mysql> select SIN(PI());
...
@@ -31483,7 +31483,7 @@ mysql> select SIN(PI());
@item TAN(X)
@item TAN(X)
Returns the tangent of @code{X}, where @code{X} is given in radians:
Returns the tangent of @code{X}, where @code{X} is given in radians:
@example
@example
mysql>
select
TAN(PI()+1);
mysql>
SELECT
TAN(PI()+1);
-> 1.557408
-> 1.557408
@end example
@end example
...
@@ -31493,11 +31493,11 @@ Returns the arc cosine of @code{X}, that is, the value whose cosine is
...
@@ -31493,11 +31493,11 @@ Returns the arc cosine of @code{X}, that is, the value whose cosine is
@code{X}. Returns @code{NULL} if @code{X} is not in the range @code{-1} to
@code{X}. Returns @code{NULL} if @code{X} is not in the range @code{-1} to
@code{1}:
@code{1}:
@example
@example
mysql>
select
ACOS(1);
mysql>
SELECT
ACOS(1);
-> 0.000000
-> 0.000000
mysql>
select
ACOS(1.0001);
mysql>
SELECT
ACOS(1.0001);
-> NULL
-> NULL
mysql>
select
ACOS(0);
mysql>
SELECT
ACOS(0);
-> 1.570796
-> 1.570796
@end example
@end example
...
@@ -31507,9 +31507,9 @@ Returns the arc sine of @code{X}, that is, the value whose sine is
...
@@ -31507,9 +31507,9 @@ Returns the arc sine of @code{X}, that is, the value whose sine is
@code{X}. Returns @code{NULL} if @code{X} is not in the range @code{-1} to
@code{X}. Returns @code{NULL} if @code{X} is not in the range @code{-1} to
@code{1}:
@code{1}:
@example
@example
mysql>
select
ASIN(0.2);
mysql>
SELECT
ASIN(0.2);
-> 0.201358
-> 0.201358
mysql>
select
ASIN('foo');
mysql>
SELECT
ASIN('foo');
-> 0.000000
-> 0.000000
@end example
@end example
...
@@ -31518,9 +31518,9 @@ mysql> select ASIN('foo');
...
@@ -31518,9 +31518,9 @@ mysql> select ASIN('foo');
Returns the arc tangent of @code{X}, that is, the value whose tangent is
Returns the arc tangent of @code{X}, that is, the value whose tangent is
@code{X}:
@code{X}:
@example
@example
mysql>
select
ATAN(2);
mysql>
SELECT
ATAN(2);
-> 1.107149
-> 1.107149
mysql>
select
ATAN(-2);
mysql>
SELECT
ATAN(-2);
-> -1.107149
-> -1.107149
@end example
@end example
...
@@ -31532,9 +31532,9 @@ similar to calculating the arc tangent of @code{Y / X}, except that the
...
@@ -31532,9 +31532,9 @@ similar to calculating the arc tangent of @code{Y / X}, except that the
signs of both arguments are used to determine the quadrant of the
signs of both arguments are used to determine the quadrant of the
result:
result:
@example
@example
mysql>
select
ATAN(-2,2);
mysql>
SELECT
ATAN(-2,2);
-> -0.785398
-> -0.785398
mysql>
select
ATAN2(PI(),0);
mysql>
SELECT
ATAN2(PI(),0);
-> 1.570796
-> 1.570796
@end example
@end example
...
@@ -31542,9 +31542,9 @@ mysql> select ATAN2(PI(),0);
...
@@ -31542,9 +31542,9 @@ mysql> select ATAN2(PI(),0);
@item COT(X)
@item COT(X)
Returns the cotangent of @code{X}:
Returns the cotangent of @code{X}:
@example
@example
mysql>
select
COT(12);
mysql>
SELECT
COT(12);
-> -1.57267341
-> -1.57267341
mysql>
select
COT(0);
mysql>
SELECT
COT(0);
-> NULL
-> NULL
@end example
@end example
...
@@ -31554,15 +31554,15 @@ mysql> select COT(0);
...
@@ -31554,15 +31554,15 @@ mysql> select COT(0);
Returns a random floating-point value in the range @code{0} to @code{1.0}.
Returns a random floating-point value in the range @code{0} to @code{1.0}.
If an integer argument @code{N} is specified, it is used as the seed value:
If an integer argument @code{N} is specified, it is used as the seed value:
@example
@example
mysql>
select
RAND();
mysql>
SELECT
RAND();
-> 0.9233482386203
-> 0.9233482386203
mysql>
select
RAND(20);
mysql>
SELECT
RAND(20);
-> 0.15888261251047
-> 0.15888261251047
mysql>
select
RAND(20);
mysql>
SELECT
RAND(20);
-> 0.15888261251047
-> 0.15888261251047
mysql>
select
RAND();
mysql>
SELECT
RAND();
-> 0.63553050033332
-> 0.63553050033332
mysql>
select
RAND();
mysql>
SELECT
RAND();
-> 0.70100469486881
-> 0.70100469486881
@end example
@end example
...
@@ -31604,11 +31604,11 @@ In other cases, the arguments are compared as case-insensitive strings:
...
@@ -31604,11 +31604,11 @@ In other cases, the arguments are compared as case-insensitive strings:
@end itemize
@end itemize
@example
@example
mysql>
select
LEAST(2,0);
mysql>
SELECT
LEAST(2,0);
-> 0
-> 0
mysql>
select
LEAST(34.0,3.0,5.0,767.0);
mysql>
SELECT
LEAST(34.0,3.0,5.0,767.0);
-> 3.0
-> 3.0
mysql>
select
LEAST("B","A","C");
mysql>
SELECT
LEAST("B","A","C");
-> "A"
-> "A"
@end example
@end example
In MySQL versions prior to Version 3.22.5, you can use @code{MIN()}
In MySQL versions prior to Version 3.22.5, you can use @code{MIN()}
...
@@ -31619,11 +31619,11 @@ instead of @code{LEAST}.
...
@@ -31619,11 +31619,11 @@ instead of @code{LEAST}.
Returns the largest (maximum-valued) argument.
Returns the largest (maximum-valued) argument.
The arguments are compared using the same rules as for @code{LEAST}:
The arguments are compared using the same rules as for @code{LEAST}:
@example
@example
mysql>
select
GREATEST(2,0);
mysql>
SELECT
GREATEST(2,0);
-> 2
-> 2
mysql>
select
GREATEST(34.0,3.0,5.0,767.0);
mysql>
SELECT
GREATEST(34.0,3.0,5.0,767.0);
-> 767.0
-> 767.0
mysql>
select
GREATEST("B","A","C");
mysql>
SELECT
GREATEST("B","A","C");
-> "C"
-> "C"
@end example
@end example
In MySQL versions prior to Version 3.22.5, you can use @code{MAX()}
In MySQL versions prior to Version 3.22.5, you can use @code{MAX()}
...
@@ -31633,7 +31633,7 @@ instead of @code{GREATEST}.
...
@@ -31633,7 +31633,7 @@ instead of @code{GREATEST}.
@item DEGREES(X)
@item DEGREES(X)
Returns the argument @code{X}, converted from radians to degrees:
Returns the argument @code{X}, converted from radians to degrees:
@example
@example
mysql>
select
DEGREES(PI());
mysql>
SELECT
DEGREES(PI());
-> 180.000000
-> 180.000000
@end example
@end example
...
@@ -31641,7 +31641,7 @@ mysql> select DEGREES(PI());
...
@@ -31641,7 +31641,7 @@ mysql> select DEGREES(PI());
@item RADIANS(X)
@item RADIANS(X)
Returns the argument @code{X}, converted from degrees to radians:
Returns the argument @code{X}, converted from degrees to radians:
@example
@example
mysql>
select
RADIANS(90);
mysql>
SELECT
RADIANS(90);
-> 1.570796
-> 1.570796
@end example
@end example
...
@@ -31650,11 +31650,11 @@ mysql> select RADIANS(90);
...
@@ -31650,11 +31650,11 @@ mysql> select RADIANS(90);
Returns the number @code{X}, truncated to @code{D} decimals. If @code{D}
Returns the number @code{X}, truncated to @code{D} decimals. If @code{D}
is @code{0}, the result will have no decimal point or fractional part:
is @code{0}, the result will have no decimal point or fractional part:
@example
@example
mysql>
select
TRUNCATE(1.223,1);
mysql>
SELECT
TRUNCATE(1.223,1);
-> 1.2
-> 1.2
mysql>
select
TRUNCATE(1.999,1);
mysql>
SELECT
TRUNCATE(1.999,1);
-> 1.9
-> 1.9
mysql>
select
TRUNCATE(1.999,0);
mysql>
SELECT
TRUNCATE(1.999,0);
-> 1
-> 1
@end example
@end example
...
@@ -31664,7 +31664,7 @@ result:
...
@@ -31664,7 +31664,7 @@ result:
@cindex rounding errors
@cindex rounding errors
@example
@example
mysql>
select
TRUNCATE(10.28*100,0);
mysql>
SELECT
TRUNCATE(10.28*100,0);
-> 1027
-> 1027
@end example
@end example
...
@@ -31686,7 +31686,7 @@ Here is an example that uses date functions. The query below selects
...
@@ -31686,7 +31686,7 @@ Here is an example that uses date functions. The query below selects
all records with a @code{date_col} value from within the last 30 days:
all records with a @code{date_col} value from within the last 30 days:
@example
@example
mysql> SELECT something FROM t
abl
e
mysql> SELECT something FROM t
bl_nam
e
WHERE TO_DAYS(NOW()) - TO_DAYS(date_col) <= 30;
WHERE TO_DAYS(NOW()) - TO_DAYS(date_col) <= 30;
@end example
@end example
...
@@ -31699,7 +31699,7 @@ for @code{date} (@code{1} = Sunday, @code{2} = Monday, ... @code{7} =
...
@@ -31699,7 +31699,7 @@ for @code{date} (@code{1} = Sunday, @code{2} = Monday, ... @code{7} =
Saturday). These index values correspond to the ODBC standard:
Saturday). These index values correspond to the ODBC standard:
@example
@example
mysql>
select
DAYOFWEEK('1998-02-03');
mysql>
SELECT
DAYOFWEEK('1998-02-03');
-> 3
-> 3
@end example
@end example
...
@@ -31709,9 +31709,9 @@ Returns the weekday index for
...
@@ -31709,9 +31709,9 @@ Returns the weekday index for
@code{date} (@code{0} = Monday, @code{1} = Tuesday, ... @code{6} = Sunday):
@code{date} (@code{0} = Monday, @code{1} = Tuesday, ... @code{6} = Sunday):
@example
@example
mysql>
select
WEEKDAY('1997-10-04 22:23:00');
mysql>
SELECT
WEEKDAY('1997-10-04 22:23:00');
-> 5
-> 5
mysql>
select
WEEKDAY('1997-11-05');
mysql>
SELECT
WEEKDAY('1997-11-05');
-> 2
-> 2
@end example
@end example
...
@@ -31721,7 +31721,7 @@ Returns the day of the month for @code{date}, in the range @code{1} to
...
@@ -31721,7 +31721,7 @@ Returns the day of the month for @code{date}, in the range @code{1} to
@code{31}:
@code{31}:
@example
@example
mysql>
select
DAYOFMONTH('1998-02-03');
mysql>
SELECT
DAYOFMONTH('1998-02-03');
-> 3
-> 3
@end example
@end example
...
@@ -31731,7 +31731,7 @@ Returns the day of the year for @code{date}, in the range @code{1} to
...
@@ -31731,7 +31731,7 @@ Returns the day of the year for @code{date}, in the range @code{1} to
@code{366}:
@code{366}:
@example
@example
mysql>
select
DAYOFYEAR('1998-02-03');
mysql>
SELECT
DAYOFYEAR('1998-02-03');
-> 34
-> 34
@end example
@end example
...
@@ -31740,7 +31740,7 @@ mysql> select DAYOFYEAR('1998-02-03');
...
@@ -31740,7 +31740,7 @@ mysql> select DAYOFYEAR('1998-02-03');
Returns the month for @code{date}, in the range @code{1} to @code{12}:
Returns the month for @code{date}, in the range @code{1} to @code{12}:
@example
@example
mysql>
select
MONTH('1998-02-03');
mysql>
SELECT
MONTH('1998-02-03');
-> 2
-> 2
@end example
@end example
...
@@ -31749,7 +31749,7 @@ mysql> select MONTH('1998-02-03');
...
@@ -31749,7 +31749,7 @@ mysql> select MONTH('1998-02-03');
Returns the name of the weekday for @code{date}:
Returns the name of the weekday for @code{date}:
@example
@example
mysql>
select
DAYNAME("1998-02-05");
mysql>
SELECT
DAYNAME("1998-02-05");
-> 'Thursday'
-> 'Thursday'
@end example
@end example
...
@@ -31758,7 +31758,7 @@ mysql> select DAYNAME("1998-02-05");
...
@@ -31758,7 +31758,7 @@ mysql> select DAYNAME("1998-02-05");
Returns the name of the month for @code{date}:
Returns the name of the month for @code{date}:
@example
@example
mysql>
select
MONTHNAME("1998-02-05");
mysql>
SELECT
MONTHNAME("1998-02-05");
-> 'February'
-> 'February'
@end example
@end example
...
@@ -31768,7 +31768,7 @@ Returns the quarter of the year for @code{date}, in the range @code{1}
...
@@ -31768,7 +31768,7 @@ Returns the quarter of the year for @code{date}, in the range @code{1}
to @code{4}:
to @code{4}:
@example
@example
mysql>
select
QUARTER('98-04-01');
mysql>
SELECT
QUARTER('98-04-01');
-> 2
-> 2
@end example
@end example
...
@@ -31784,13 +31784,13 @@ second argument is @code{0}, on Monday if the second argument is
...
@@ -31784,13 +31784,13 @@ second argument is @code{0}, on Monday if the second argument is
@code{1}:
@code{1}:
@example
@example
mysql>
select
WEEK('1998-02-20');
mysql>
SELECT
WEEK('1998-02-20');
-> 7
-> 7
mysql>
select
WEEK('1998-02-20',0);
mysql>
SELECT
WEEK('1998-02-20',0);
-> 7
-> 7
mysql>
select
WEEK('1998-02-20',1);
mysql>
SELECT
WEEK('1998-02-20',1);
-> 8
-> 8
mysql>
select
WEEK('1998-12-31',1);
mysql>
SELECT
WEEK('1998-12-31',1);
-> 53
-> 53
@end example
@end example
...
@@ -31802,7 +31802,7 @@ calendar in the USA.
...
@@ -31802,7 +31802,7 @@ calendar in the USA.
Returns the year for @code{date}, in the range @code{1000} to @code{9999}:
Returns the year for @code{date}, in the range @code{1000} to @code{9999}:
@example
@example
mysql>
select
YEAR('98-02-03');
mysql>
SELECT
YEAR('98-02-03');
-> 1998
-> 1998
@end example
@end example
...
@@ -31814,7 +31814,7 @@ different from the year in the date argument for the first and the last
...
@@ -31814,7 +31814,7 @@ different from the year in the date argument for the first and the last
week of the year:
week of the year:
@example
@example
mysql>
select
YEARWEEK('1987-01-01');
mysql>
SELECT
YEARWEEK('1987-01-01');
-> 198653
-> 198653
@end example
@end example
...
@@ -31823,7 +31823,7 @@ mysql> select YEARWEEK('1987-01-01');
...
@@ -31823,7 +31823,7 @@ mysql> select YEARWEEK('1987-01-01');
Returns the hour for @code{time}, in the range @code{0} to @code{23}:
Returns the hour for @code{time}, in the range @code{0} to @code{23}:
@example
@example
mysql>
select
HOUR('10:05:03');
mysql>
SELECT
HOUR('10:05:03');
-> 10
-> 10
@end example
@end example
...
@@ -31832,7 +31832,7 @@ mysql> select HOUR('10:05:03');
...
@@ -31832,7 +31832,7 @@ mysql> select HOUR('10:05:03');
Returns the minute for @code{time}, in the range @code{0} to @code{59}:
Returns the minute for @code{time}, in the range @code{0} to @code{59}:
@example
@example
mysql>
select
MINUTE('98-02-03 10:05:03');
mysql>
SELECT
MINUTE('98-02-03 10:05:03');
-> 5
-> 5
@end example
@end example
...
@@ -31841,7 +31841,7 @@ mysql> select MINUTE('98-02-03 10:05:03');
...
@@ -31841,7 +31841,7 @@ mysql> select MINUTE('98-02-03 10:05:03');
Returns the second for @code{time}, in the range @code{0} to @code{59}:
Returns the second for @code{time}, in the range @code{0} to @code{59}:
@example
@example
mysql>
select
SECOND('10:05:03');
mysql>
SELECT
SECOND('10:05:03');
-> 3
-> 3
@end example
@end example
...
@@ -31853,7 +31853,7 @@ Adds @code{N} months to period @code{P} (in the format @code{YYMM} or
...
@@ -31853,7 +31853,7 @@ Adds @code{N} months to period @code{P} (in the format @code{YYMM} or
Note that the period argument @code{P} is @emph{not} a date value:
Note that the period argument @code{P} is @emph{not} a date value:
@example
@example
mysql>
select
PERIOD_ADD(9801,2);
mysql>
SELECT
PERIOD_ADD(9801,2);
-> 199803
-> 199803
@end example
@end example
...
@@ -31866,7 +31866,7 @@ Note that the period arguments @code{P1} and @code{P2} are @emph{not}
...
@@ -31866,7 +31866,7 @@ Note that the period arguments @code{P1} and @code{P2} are @emph{not}
date values:
date values:
@example
@example
mysql>
select
PERIOD_DIFF(9802,199703);
mysql>
SELECT
PERIOD_DIFF(9802,199703);
-> 11
-> 11
@end example
@end example
...
@@ -31967,9 +31967,9 @@ contains a time part, the date value will be automatically converted to a
...
@@ -31967,9 +31967,9 @@ contains a time part, the date value will be automatically converted to a
datetime value:
datetime value:
@example
@example
mysql>
select date_add("1999-01-01", interval 1 day
);
mysql>
SELECT DATE_ADD("1999-01-01", INTERVAL 1 DAY
);
-> 1999-01-02
-> 1999-01-02
mysql>
select date_add("1999-01-01", interval 1 hour
);
mysql>
SELECT DATE_ADD("1999-01-01", INTERVAL 1 HOUR
);
-> 1999-01-01 01:00:00
-> 1999-01-01 01:00:00
@end example
@end example
...
@@ -31979,7 +31979,7 @@ has a day that is larger than the maximum day for the new month, the day is
...
@@ -31979,7 +31979,7 @@ has a day that is larger than the maximum day for the new month, the day is
adjusted to the maximum days in the new month:
adjusted to the maximum days in the new month:
@example
@example
mysql>
select DATE_ADD('1998-01-30', Interval 1 month
);
mysql>
SELECT DATE_ADD('1998-01-30', INTERVAL 1 MONTH
);
-> 1998-02-28
-> 1998-02-28
@end example
@end example
...
@@ -32008,9 +32008,9 @@ Given a date @code{date}, returns a daynumber (the number of days since year
...
@@ -32008,9 +32008,9 @@ Given a date @code{date}, returns a daynumber (the number of days since year
0):
0):
@example
@example
mysql>
select
TO_DAYS(950501);
mysql>
SELECT
TO_DAYS(950501);
-> 728779
-> 728779
mysql>
select
TO_DAYS('1997-10-07');
mysql>
SELECT
TO_DAYS('1997-10-07');
-> 729669
-> 729669
@end example
@end example
...
@@ -32023,7 +32023,7 @@ days that were lost when the calendar was changed.
...
@@ -32023,7 +32023,7 @@ days that were lost when the calendar was changed.
Given a daynumber @code{N}, returns a @code{DATE} value:
Given a daynumber @code{N}, returns a @code{DATE} value:
@example
@example
mysql>
select
FROM_DAYS(729669);
mysql>
SELECT
FROM_DAYS(729669);
-> '1997-10-07'
-> '1997-10-07'
@end example
@end example
...
@@ -32073,17 +32073,17 @@ following specifiers may be used in the @code{format} string:
...
@@ -32073,17 +32073,17 @@ following specifiers may be used in the @code{format} string:
All other characters are just copied to the result without interpretation:
All other characters are just copied to the result without interpretation:
@example
@example
mysql>
select
DATE_FORMAT('1997-10-04 22:23:00', '%W %M %Y');
mysql>
SELECT
DATE_FORMAT('1997-10-04 22:23:00', '%W %M %Y');
-> 'Saturday October 1997'
-> 'Saturday October 1997'
mysql>
select
DATE_FORMAT('1997-10-04 22:23:00', '%H:%i:%s');
mysql>
SELECT
DATE_FORMAT('1997-10-04 22:23:00', '%H:%i:%s');
-> '22:23:00'
-> '22:23:00'
mysql>
select
DATE_FORMAT('1997-10-04 22:23:00',
mysql>
SELECT
DATE_FORMAT('1997-10-04 22:23:00',
'%D %y %a %d %m %b %j');
'%D %y %a %d %m %b %j');
-> '4th 97 Sat 04 10 Oct 277'
-> '4th 97 Sat 04 10 Oct 277'
mysql>
select
DATE_FORMAT('1997-10-04 22:23:00',
mysql>
SELECT
DATE_FORMAT('1997-10-04 22:23:00',
'%H %k %I %r %T %S %w');
'%H %k %I %r %T %S %w');
-> '22 22 10 10:23:00 PM 22:23:00 00 6'
-> '22 22 10 10:23:00 PM 22:23:00 00 6'
mysql>
select
DATE_FORMAT('1999-01-01', '%X %V');
mysql>
SELECT
DATE_FORMAT('1999-01-01', '%X %V');
-> '1998 52'
-> '1998 52'
@end example
@end example
...
@@ -32107,9 +32107,9 @@ format, depending on whether the function is used in a string or numeric
...
@@ -32107,9 +32107,9 @@ format, depending on whether the function is used in a string or numeric
context:
context:
@example
@example
mysql>
select
CURDATE();
mysql>
SELECT
CURDATE();
-> '1997-12-15'
-> '1997-12-15'
mysql>
select
CURDATE() + 0;
mysql>
SELECT
CURDATE() + 0;
-> 19971215
-> 19971215
@end example
@end example
...
@@ -32122,9 +32122,9 @@ format, depending on whether the function is used in a string or numeric
...
@@ -32122,9 +32122,9 @@ format, depending on whether the function is used in a string or numeric
context:
context:
@example
@example
mysql>
select
CURTIME();
mysql>
SELECT
CURTIME();
-> '23:50:26'
-> '23:50:26'
mysql>
select
CURTIME() + 0;
mysql>
SELECT
CURTIME() + 0;
-> 235026
-> 235026
@end example
@end example
...
@@ -32139,9 +32139,9 @@ or @code{YYYYMMDDHHMMSS} format, depending on whether the function is used in
...
@@ -32139,9 +32139,9 @@ or @code{YYYYMMDDHHMMSS} format, depending on whether the function is used in
a string or numeric context:
a string or numeric context:
@example
@example
mysql>
select
NOW();
mysql>
SELECT
NOW();
-> '1997-12-15 23:50:26'
-> '1997-12-15 23:50:26'
mysql>
select
NOW() + 0;
mysql>
SELECT
NOW() + 0;
-> 19971215235026
-> 19971215235026
@end example
@end example
...
@@ -32157,9 +32157,9 @@ returns the value of the argument as seconds since @code{'1970-01-01
...
@@ -32157,9 +32157,9 @@ returns the value of the argument as seconds since @code{'1970-01-01
@code{YYMMDD} or @code{YYYYMMDD} in local time:
@code{YYMMDD} or @code{YYYYMMDD} in local time:
@example
@example
mysql>
select
UNIX_TIMESTAMP();
mysql>
SELECT
UNIX_TIMESTAMP();
-> 882226357
-> 882226357
mysql>
select
UNIX_TIMESTAMP('1997-10-04 22:23:00');
mysql>
SELECT
UNIX_TIMESTAMP('1997-10-04 22:23:00');
-> 875996580
-> 875996580
@end example
@end example
...
@@ -32179,9 +32179,9 @@ Returns a representation of the @code{unix_timestamp} argument as a value in
...
@@ -32179,9 +32179,9 @@ Returns a representation of the @code{unix_timestamp} argument as a value in
whether the function is used in a string or numeric context:
whether the function is used in a string or numeric context:
@example
@example
mysql>
select
FROM_UNIXTIME(875996580);
mysql>
SELECT
FROM_UNIXTIME(875996580);
-> '1997-10-04 22:23:00'
-> '1997-10-04 22:23:00'
mysql>
select
FROM_UNIXTIME(875996580) + 0;
mysql>
SELECT
FROM_UNIXTIME(875996580) + 0;
-> 19971004222300
-> 19971004222300
@end example
@end example
...
@@ -32192,7 +32192,7 @@ the @code{format} string. @code{format} may contain the same specifiers as
...
@@ -32192,7 +32192,7 @@ the @code{format} string. @code{format} may contain the same specifiers as
those listed in the entry for the @code{DATE_FORMAT()} function:
those listed in the entry for the @code{DATE_FORMAT()} function:
@example
@example
mysql>
select
FROM_UNIXTIME(UNIX_TIMESTAMP(),
mysql>
SELECT
FROM_UNIXTIME(UNIX_TIMESTAMP(),
'%Y %D %M %h:%i:%s %x');
'%Y %D %M %h:%i:%s %x');
-> '1997 23rd December 03:43:30 1997'
-> '1997 23rd December 03:43:30 1997'
@end example
@end example
...
@@ -32204,9 +32204,9 @@ as a value in @code{'HH:MM:SS'} or @code{HHMMSS} format, depending on whether
...
@@ -32204,9 +32204,9 @@ as a value in @code{'HH:MM:SS'} or @code{HHMMSS} format, depending on whether
the function is used in a string or numeric context:
the function is used in a string or numeric context:
@example
@example
mysql>
select
SEC_TO_TIME(2378);
mysql>
SELECT
SEC_TO_TIME(2378);
-> '00:39:38'
-> '00:39:38'
mysql>
select
SEC_TO_TIME(2378) + 0;
mysql>
SELECT
SEC_TO_TIME(2378) + 0;
-> 3938
-> 3938
@end example
@end example
...
@@ -32215,9 +32215,9 @@ mysql> select SEC_TO_TIME(2378) + 0;
...
@@ -32215,9 +32215,9 @@ mysql> select SEC_TO_TIME(2378) + 0;
Returns the @code{time} argument, converted to seconds:
Returns the @code{time} argument, converted to seconds:
@example
@example
mysql>
select
TIME_TO_SEC('22:23:00');
mysql>
SELECT
TIME_TO_SEC('22:23:00');
-> 80580
-> 80580
mysql>
select
TIME_TO_SEC('00:39:38');
mysql>
SELECT
TIME_TO_SEC('00:39:38');
-> 2378
-> 2378
@end example
@end example
@end table
@end table
...
@@ -32269,7 +32269,7 @@ To cast a string to a numeric value, you don't normally have to do
...
@@ -32269,7 +32269,7 @@ To cast a string to a numeric value, you don't normally have to do
anything; Just use the string value as it would be a number:
anything; Just use the string value as it would be a number:
@example
@example
mysql>
select
1+'1';
mysql>
SELECT
1+'1';
-> 2
-> 2
@end example
@end example
...
@@ -32281,9 +32281,9 @@ cast operators, which will cast the operation to signed respective
...
@@ -32281,9 +32281,9 @@ cast operators, which will cast the operation to signed respective
unsigned 64 bit integer.
unsigned 64 bit integer.
@example
@example
mysql>
select
CAST(1-2 AS UNSIGNED)
mysql>
SELECT
CAST(1-2 AS UNSIGNED)
-> 18446744073709551615
-> 18446744073709551615
mysql
select
CAST(CAST(1-2 AS UNSIGNED) AS SIGNED);
mysql
> SELECT
CAST(CAST(1-2 AS UNSIGNED) AS SIGNED);
-> -1
-> -1
@end example
@end example
...
@@ -32292,7 +32292,7 @@ Note that if either operation is a floating point value (In this context
...
@@ -32292,7 +32292,7 @@ Note that if either operation is a floating point value (In this context
be a floating point value and is not affected by the above rule.
be a floating point value and is not affected by the above rule.
@example
@example
mysql>
select
CAST(1 AS UNSIGNED) -2.0
mysql>
SELECT
CAST(1 AS UNSIGNED) -2.0
-> -1.0
-> -1.0
@end example
@end example
...
@@ -32346,7 +32346,7 @@ these operators have a maximum range of 64 bits.
...
@@ -32346,7 +32346,7 @@ these operators have a maximum range of 64 bits.
@item |
@item |
Bitwise OR
Bitwise OR
@example
@example
mysql>
select
29 | 15;
mysql>
SELECT
29 | 15;
-> 31
-> 31
@end example
@end example
...
@@ -32357,7 +32357,7 @@ The result is an unsigned 64 bit integer.
...
@@ -32357,7 +32357,7 @@ The result is an unsigned 64 bit integer.
@item &
@item &
Bitwise AND:
Bitwise AND:
@example
@example
mysql>
select
29 & 15;
mysql>
SELECT
29 & 15;
-> 13
-> 13
@end example
@end example
...
@@ -32367,7 +32367,7 @@ The result is an unsigned 64 bit integer.
...
@@ -32367,7 +32367,7 @@ The result is an unsigned 64 bit integer.
@item <<
@item <<
Shifts a longlong (@code{BIGINT}) number to the left:
Shifts a longlong (@code{BIGINT}) number to the left:
@example
@example
mysql>
select
1 << 2;
mysql>
SELECT
1 << 2;
-> 4
-> 4
@end example
@end example
...
@@ -32377,7 +32377,7 @@ The result is an unsigned 64 bit integer.
...
@@ -32377,7 +32377,7 @@ The result is an unsigned 64 bit integer.
@item >>
@item >>
Shifts a longlong (@code{BIGINT}) number to the right:
Shifts a longlong (@code{BIGINT}) number to the right:
@example
@example
mysql>
select
4 >> 2;
mysql>
SELECT
4 >> 2;
-> 1
-> 1
@end example
@end example
...
@@ -32387,7 +32387,7 @@ The result is an unsigned 64 bit integer.
...
@@ -32387,7 +32387,7 @@ The result is an unsigned 64 bit integer.
@item ~
@item ~
Invert all bits:
Invert all bits:
@example
@example
mysql>
select
5 & ~1;
mysql>
SELECT
5 & ~1;
-> 4
-> 4
@end example
@end example
...
@@ -32397,7 +32397,7 @@ The result is an unsigned 64 bit integer.
...
@@ -32397,7 +32397,7 @@ The result is an unsigned 64 bit integer.
@item BIT_COUNT(N)
@item BIT_COUNT(N)
Returns the number of bits that are set in the argument @code{N}:
Returns the number of bits that are set in the argument @code{N}:
@example
@example
mysql>
select
BIT_COUNT(29);
mysql>
SELECT
BIT_COUNT(29);
-> 4
-> 4
@end example
@end example
@end table
@end table
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