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nexedi
MariaDB
Commits
5b892894
Commit
5b892894
authored
Sep 05, 2002
by
arjen@fred.bitbike.com
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Fix invalid Texinfo formatting and rephrase text.
Also copied note to 'know bugs and misfeatures' section.
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Docs/manual.texi
View file @
5b892894
...
@@ -3464,6 +3464,11 @@ that in MySQL Server, @code{VARCHAR} columns are treated the same way.
...
@@ -3464,6 +3464,11 @@ that in MySQL Server, @code{VARCHAR} columns are treated the same way.
@item
@item
You can only have up to 255 @code{ENUM} and @code{SET} columns in one table.
You can only have up to 255 @code{ENUM} and @code{SET} columns in one table.
@item
In @code{MIN()}, @code{MAX()} and other aggregate functions, MySQL
currently compares @code{ENUM} and @code{SET} columns by their string
value rather than by the string's relative position in the set.
@item
@item
@code{safe_mysqld} redirects all messages from @code{mysqld} to the
@code{safe_mysqld} redirects all messages from @code{mysqld} to the
@code{mysqld} log. One problem with this is that if you execute
@code{mysqld} log. One problem with this is that if you execute
...
@@ -33868,17 +33873,17 @@ Returns the minimum or maximum value of @code{expr}. @code{MIN()} and
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@@ -33868,17 +33873,17 @@ Returns the minimum or maximum value of @code{expr}. @code{MIN()} and
@code{MAX()} may take a string argument; in such cases they return the
@code{MAX()} may take a string argument; in such cases they return the
minimum or maximum string value. @xref{MySQL indexes}.
minimum or maximum string value. @xref{MySQL indexes}.
There is one inconsistency in MySQL in handling @code[ENUM] and @code[SET]
types when it comes to @code{MIN()}, @code{MAX()} and other aggregating
functions. MySQL will compare values based on string values of the columns,
instead of it's relative position. This will be fixed in future.
@example
@example
mysql> SELECT student_name, MIN(test_score), MAX(test_score)
mysql> SELECT student_name, MIN(test_score), MAX(test_score)
-> FROM student
-> FROM student
-> GROUP BY student_name;
-> GROUP BY student_name;
@end example
@end example
In @code{MIN()}, @code{MAX()} and other aggregate functions, MySQL
currently compares @code{ENUM} and @code{SET} columns by their string
value rather than by the string's relative position in the set.
This will be rectified.
@findex SUM()
@findex SUM()
@item SUM(expr)
@item SUM(expr)
Returns the sum of @code{expr}. Note that if the return set has no rows,
Returns the sum of @code{expr}. Note that if the return set has no rows,
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