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Commit 1e6736b5 authored by igor@rurik.mysql.com's avatar igor@rurik.mysql.com
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Merge rurik.mysql.com:/home/igor/mysql-4.1 

into rurik.mysql.com:/home/igor/dev/mysql-4.1-0
parents af9740d0 1e187246
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Showing with 544 additions and 63 deletions
client/mysqlimport.c
View file @ 1e6736b5
......@@ -37,8 +37,9 @@ static char *add_load_option(char *ptr,const char *object,
const char *statement);
static my_bool verbose=0,lock_tables=0,ignore_errors=0,opt_delete=0,
replace=0,silent=0,ignore=0,opt_compress=0,opt_local_file=0,
replace=0,silent=0,ignore=0,opt_compress=0,
opt_low_priority= 0, tty_password= 0;
static uint opt_local_file=0;
static MYSQL mysql_connection;
static char *opt_password=0, *current_user=0,
*current_host=0, *current_db=0, *fields_terminated=0,
......
client/mysqltest.c
View file @ 1e6736b5
......@@ -456,6 +456,7 @@ my_bool mysql_rpl_probe(MYSQL *mysql __attribute__((unused))) { return 1; }
#endif
static void replace_dynstr_append_mem(DYNAMIC_STRING *ds, const char *val,
int len);
static int handle_no_error(struct st_query *q);
static void do_eval(DYNAMIC_STRING* query_eval, const char *query)
{
......@@ -2907,22 +2908,9 @@ static int run_query_normal(MYSQL* mysql, struct st_query* q, int flags)
}
if (q->expected_errno[0].type == ERR_ERRNO &&
q->expected_errno[0].code.errnum != 0)
if (handle_no_error(q))
{
/* Error code we wanted was != 0, i.e. not an expected success */
verbose_msg("query '%s' succeeded - should have failed with errno %d...",
q->query, q->expected_errno[0].code.errnum);
error = 1;
goto end;
}
else if (q->expected_errno[0].type == ERR_SQLSTATE &&
strcmp(q->expected_errno[0].code.sqlstate,"00000") != 0)
{
/* SQLSTATE we wanted was != "00000", i.e. not an expected success */
verbose_msg("query '%s' succeeded - should have failed with sqlstate %s...",
q->query, q->expected_errno[0].code.sqlstate);
error = 1;
error= 1;
goto end;
}
......@@ -3102,10 +3090,8 @@ static int run_query_stmt(MYSQL *mysql, struct st_query *q, int flags)
{
if (q->abort_on_error)
{
die("unable to prepare statement '%s': "
"%s (mysql_stmt_errno=%d returned=%d)",
query,
mysql_stmt_error(stmt), mysql_stmt_errno(stmt), err);
die("query '%s' failed: %d: %s", query,
mysql_stmt_errno(stmt), mysql_stmt_error(stmt));
}
else
{
......@@ -3186,12 +3172,8 @@ static int run_query_stmt(MYSQL *mysql, struct st_query *q, int flags)
}
/* If we got here the statement was both executed and read succeesfully */
if (q->expected_errno[0].type == ERR_ERRNO &&
q->expected_errno[0].code.errnum != 0)
if (handle_no_error(q))
{
verbose_msg("query '%s' succeeded - should have failed with errno %d...",
q->query, q->expected_errno[0].code.errnum);
error= 1;
goto end;
}
......@@ -3518,8 +3500,14 @@ static int run_query_stmt_handle_error(char *query, struct st_query *q,
dynstr_append_mem(ds,"\n",1);
if (i)
{
verbose_msg("query '%s' failed with wrong errno %d instead of %d...",
q->query, mysql_stmt_errno(stmt), q->expected_errno[0]);
if (q->expected_errno[0].type == ERR_ERRNO)
verbose_msg("query '%s' failed with wrong errno %d instead of %d...",
q->query, mysql_stmt_errno(stmt),
q->expected_errno[0].code.errnum);
else
verbose_msg("query '%s' failed with wrong sqlstate %s instead of %s...",
q->query, mysql_stmt_sqlstate(stmt),
q->expected_errno[0].code.sqlstate);
return 1; /* Error */
}
verbose_msg("query '%s' failed: %d: %s", q->query, mysql_stmt_errno(stmt),
......@@ -3534,6 +3522,43 @@ static int run_query_stmt_handle_error(char *query, struct st_query *q,
return 0;
}
/*
Handle absence of errors after execution
SYNOPSIS
handle_no_error()
q - context of query
RETURN VALUE
0 - OK
1 - Some error was expected from this query.
*/
static int handle_no_error(struct st_query *q)
{
DBUG_ENTER("handle_no_error");
if (q->expected_errno[0].type == ERR_ERRNO &&
q->expected_errno[0].code.errnum != 0)
{
/* Error code we wanted was != 0, i.e. not an expected success */
verbose_msg("query '%s' succeeded - should have failed with errno %d...",
q->query, q->expected_errno[0].code.errnum);
DBUG_RETURN(1);
}
else if (q->expected_errno[0].type == ERR_SQLSTATE &&
strcmp(q->expected_errno[0].code.sqlstate,"00000") != 0)
{
/* SQLSTATE we wanted was != "00000", i.e. not an expected success */
verbose_msg("query '%s' succeeded - should have failed with sqlstate %s...",
q->query, q->expected_errno[0].code.sqlstate);
DBUG_RETURN(1);
}
DBUG_RETURN(0);
}
/****************************************************************************\
* Functions to match SQL statements that can be prepared
\****************************************************************************/
......
mysql-test/r/ctype_utf8.result
View file @ 1e6736b5
......@@ -955,6 +955,10 @@ char_length(a) length(a) a
2 4 ан
drop table t1;
set names utf8;
select 'andre%' like 'andreñ%' escape 'ñ';
'andre%' like 'andreñ%' escape 'ñ'
1
set names utf8;
select 'a\\' like 'a\\';
'a\\' like 'a\\'
1
......
mysql-test/r/func_gconcat.result
View file @ 1e6736b5
......@@ -469,6 +469,15 @@ select collation(group_concat(a,b)) from t1;
ERROR HY000: Illegal mix of collations (cp1250_general_ci,IMPLICIT) and (koi8r_general_ci,IMPLICIT) for operation 'group_concat'
drop table t1;
drop table t2;
CREATE TABLE t1 (a CHAR(10) CHARACTER SET cp850);
INSERT INTO t1 VALUES ('');
SELECT a FROM t1;
a
SELECT GROUP_CONCAT(a) FROM t1;
GROUP_CONCAT(a)
DROP TABLE t1;
CREATE TABLE t1 (id int);
SELECT GROUP_CONCAT(id) AS gc FROM t1 HAVING gc IS NULL;
gc
......
mysql-test/r/func_like.result
View file @ 1e6736b5
......@@ -158,3 +158,10 @@ DROP TABLE t1;
select _cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin;
_cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin
1
set names koi8r;
select 'andre%' like 'andre%' escape '';
'andre%' like 'andre%' escape ''
1
select _cp1251'andre%' like convert('andre%' using cp1251) escape '';
_cp1251'andre%' like convert('andre%' using cp1251) escape ''
1
mysql-test/r/join_outer.result
View file @ 1e6736b5
......@@ -883,3 +883,136 @@ Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
drop table t1, t2;
set group_concat_max_len=default;
CREATE TABLE t1 (a int PRIMARY KEY, b int);
CREATE TABLE t2 (a int PRIMARY KEY, b int);
INSERT INTO t1 VALUES (1,2), (2,1), (3,2), (4,3), (5,6), (6,5), (7,8), (8,7), (9,10);
INSERT INTO t2 VALUES (3,0), (4,1), (6,4), (7,5);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b <= t1.a AND t1.a <= t1.b;
a b a b
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a BETWEEN t2.b AND t1.b;
a b a b
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT BETWEEN t2.b AND t1.b);
a b a b
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b > t1.a OR t1.a > t1.b;
a b a b
2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT BETWEEN t2.b AND t1.b;
a b a b
2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a BETWEEN t2.b AND t1.b);
a b a b
2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t2.b > t1.a OR t1.a > t1.b;
a b a b
2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a AND t1.a BETWEEN t2.b AND t1.b);
a b a b
2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a AND (t2.b > t1.a OR t1.a > t1.b);
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a OR t1.a BETWEEN t2.b AND t1.b);
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT IN(t2.a, t2.b));
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a != t1.b AND t1.a != t2.b;
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT IN(t1.b, t2.b);
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a IN(t1.b, t2.b));
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b OR (t1.a != t2.a AND t1.a != t2.b);
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b AND t1.a IN(t2.a, t2.b));
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b AND t1.a != t1.b AND t1.a != t2.b;
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b OR t1.a IN(t1.b, t2.b));
a b a b
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using where
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a > IF(t1.a = t2.b-2, t2.b, t2.b-1);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using where
DROP TABLE t1,t2;
mysql-test/t/ctype_utf8.test
View file @ 1e6736b5
......@@ -810,6 +810,12 @@ alter table t1 modify a char(2) character set utf8;
select char_length(a), length(a), a from t1 order by a;
drop table t1;
#
# Bugs#12611
# ESCAPE + LIKE do not work when the escape char is a multibyte one
#
set names utf8;
select 'andre%' like 'andreñ%' escape 'ñ';
#
# Bugs#11754: SET NAMES utf8 followed by SELECT "A\\" LIKE "A\\" returns 0
......
mysql-test/t/func_gconcat.test
View file @ 1e6736b5
......@@ -281,6 +281,16 @@ select collation(group_concat(a,b)) from t1;
drop table t1;
drop table t2;
#
# Bug #12829
# Cannot convert the charset of a GROUP_CONCAT result
#
CREATE TABLE t1 (a CHAR(10) CHARACTER SET cp850);
INSERT INTO t1 VALUES ('');
SELECT a FROM t1;
SELECT GROUP_CONCAT(a) FROM t1;
DROP TABLE t1;
#
# bug #7769: group_concat returning null is checked in having
#
......
mysql-test/t/func_like.test
View file @ 1e6736b5
......@@ -96,4 +96,21 @@ DROP TABLE t1;
#
select _cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin;
#
# Check 8bit escape character
#
set names koi8r;
select 'andre%' like 'andre%' escape '';
# Check 8bit escape character with charset conversion:
# For "a LIKE b ESCAPE c" expressions,
# escape character is converted into the operation character set,
# which is result of aggregation of character sets of "a" and "b".
# "c" itself doesn't take part in aggregation, because its collation
# doesn't matter, escape character is always compared binary.
# In the example below, escape character is converted from koi8r into cp1251:
#
select _cp1251'andre%' like convert('andre%' using cp1251) escape '';
#
# End of 4.1 tests
mysql-test/t/join_outer.test
View file @ 1e6736b5
......@@ -625,4 +625,50 @@ select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by t1.a;
drop table t1, t2;
set group_concat_max_len=default;
#
# Test for bugs
# #12101: erroneously applied outer join elimination in case of WHERE NOT BETWEEN
# #12102: erroneously missing outer join elimination in case of WHERE IN/IF
#
CREATE TABLE t1 (a int PRIMARY KEY, b int);
CREATE TABLE t2 (a int PRIMARY KEY, b int);
INSERT INTO t1 VALUES (1,2), (2,1), (3,2), (4,3), (5,6), (6,5), (7,8), (8,7), (9,10);
INSERT INTO t2 VALUES (3,0), (4,1), (6,4), (7,5);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b <= t1.a AND t1.a <= t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a BETWEEN t2.b AND t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT BETWEEN t2.b AND t1.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b > t1.a OR t1.a > t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT BETWEEN t2.b AND t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a BETWEEN t2.b AND t1.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t2.b > t1.a OR t1.a > t1.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a AND t1.a BETWEEN t2.b AND t1.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a AND (t2.b > t1.a OR t1.a > t1.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a OR t1.a BETWEEN t2.b AND t1.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a NOT IN(t2.a, t2.b));
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a != t1.b AND t1.a != t2.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT IN(t1.b, t2.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a IN(t1.b, t2.b));
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b OR (t1.a != t2.a AND t1.a != t2.b);
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b AND t1.a IN(t2.a, t2.b));
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.a != t2.b AND t1.a != t1.b AND t1.a != t2.b;
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t2.a = t2.b OR t1.a IN(t1.b, t2.b));
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a > IF(t1.a = t2.b-2, t2.b, t2.b-1);
DROP TABLE t1,t2;
# End of 4.1 tests
mysql-test/t/mysqltest.test
View file @ 1e6736b5
......@@ -592,7 +592,7 @@ while ($num)
--source var/tmp/sourced1.sql
dec $num;
}
--enable_abort_on_error;
--enable_abort_on_error
--enable_query_log
# ----------------------------------------------------------------------------
......
sql/examples/ha_tina.cc
View file @ 1e6736b5
......@@ -609,7 +609,8 @@ int ha_tina::rnd_init(bool scan)
records= 0;
chain_ptr= chain;
#ifdef HAVE_MADVISE
(void)madvise(share->mapped_file,share->file_stat.st_size,MADV_SEQUENTIAL);
if (scan)
(void)madvise(share->mapped_file,share->file_stat.st_size,MADV_SEQUENTIAL);
#endif
DBUG_RETURN(0);
......
sql/item_cmpfunc.cc
View file @ 1e6736b5
......@@ -820,6 +820,54 @@ longlong Item_func_interval::val_int()
return i-1;
}
/*
Perform context analysis of a BETWEEN item tree
SYNOPSIS:
fix_fields()
thd reference to the global context of the query thread
tables list of all open tables involved in the query
ref pointer to Item* variable where pointer to resulting "fixed"
item is to be assigned
DESCRIPTION
This function performs context analysis (name resolution) and calculates
various attributes of the item tree with Item_func_between as its root.
The function saves in ref the pointer to the item or to a newly created
item that is considered as a replacement for the original one.
NOTES
Let T0(e)/T1(e) be the value of not_null_tables(e) when e is used on
a predicate/function level. Then it's easy to show that:
T0(e BETWEEN e1 AND e2) = union(T1(e),T1(e1),T1(e2))
T1(e BETWEEN e1 AND e2) = union(T1(e),intersection(T1(e1),T1(e2)))
T0(e NOT BETWEEN e1 AND e2) = union(T1(e),intersection(T1(e1),T1(e2)))
T1(e NOT BETWEEN e1 AND e2) = union(T1(e),intersection(T1(e1),T1(e2)))
RETURN
0 ok
1 got error
*/
bool
Item_func_between::fix_fields(THD *thd, struct st_table_list *tables, Item **ref)
{
if (Item_func_opt_neg::fix_fields(thd, tables, ref))
return 1;
/* not_null_tables_cache == union(T1(e),T1(e1),T1(e2)) */
if (pred_level && !negated)
return 0;
/* not_null_tables_cache == union(T1(e), intersection(T1(e1),T1(e2))) */
not_null_tables_cache= args[0]->not_null_tables() |
(args[1]->not_null_tables() & args[2]->not_null_tables());
return 0;
}
void Item_func_between::fix_length_and_dec()
{
max_length= 1;
......@@ -871,8 +919,9 @@ longlong Item_func_between::val_int()
a=args[1]->val_str(&value1);
b=args[2]->val_str(&value2);
if (!args[1]->null_value && !args[2]->null_value)
return (sortcmp(value,a,cmp_collation.collation) >= 0 &&
sortcmp(value,b,cmp_collation.collation) <= 0) ? 1 : 0;
return (longlong) ((sortcmp(value,a,cmp_collation.collation) >= 0 &&
sortcmp(value,b,cmp_collation.collation) <= 0) !=
negated);
if (args[1]->null_value && args[2]->null_value)
null_value=1;
else if (args[1]->null_value)
......@@ -894,7 +943,7 @@ longlong Item_func_between::val_int()
a=args[1]->val_int();
b=args[2]->val_int();
if (!args[1]->null_value && !args[2]->null_value)
return (value >= a && value <= b) ? 1 : 0;
return (longlong) ((value >= a && value <= b) != negated);
if (args[1]->null_value && args[2]->null_value)
null_value=1;
else if (args[1]->null_value)
......@@ -914,7 +963,7 @@ longlong Item_func_between::val_int()
a=args[1]->val();
b=args[2]->val();
if (!args[1]->null_value && !args[2]->null_value)
return (value >= a && value <= b) ? 1 : 0;
return (longlong) ((value >= a && value <= b) != negated);
if (args[1]->null_value && args[2]->null_value)
null_value=1;
else if (args[1]->null_value)
......@@ -926,7 +975,7 @@ longlong Item_func_between::val_int()
null_value= value >= a;
}
}
return 0;
return (longlong) (!null_value && negated);
}
......@@ -1019,6 +1068,49 @@ Item_func_ifnull::val_str(String *str)
}
/*
Perform context analysis of an IF item tree
SYNOPSIS:
fix_fields()
thd reference to the global context of the query thread
tables list of all open tables involved in the query
ref pointer to Item* variable where pointer to resulting "fixed"
item is to be assigned
DESCRIPTION
This function performs context analysis (name resolution) and calculates
various attributes of the item tree with Item_func_if as its root.
The function saves in ref the pointer to the item or to a newly created
item that is considered as a replacement for the original one.
NOTES
Let T0(e)/T1(e) be the value of not_null_tables(e) when e is used on
a predicate/function level. Then it's easy to show that:
T0(IF(e,e1,e2) = T1(IF(e,e1,e2))
T1(IF(e,e1,e2)) = intersection(T1(e1),T1(e2))
RETURN
0 ok
1 got error
*/
bool
Item_func_if::fix_fields(THD *thd, struct st_table_list *tlist, Item **ref)
{
DBUG_ASSERT(fixed == 0);
args[0]->top_level_item();
if (Item_func::fix_fields(thd, tlist, ref))
return 1;
not_null_tables_cache= (args[1]->not_null_tables()
& args[2]->not_null_tables());
return 0;
}
void
Item_func_if::fix_length_and_dec()
{
......@@ -1750,6 +1842,56 @@ bool Item_func_in::nulls_in_row()
}
/*
Perform context analysis of an IN item tree
SYNOPSIS:
fix_fields()
thd reference to the global context of the query thread
tables list of all open tables involved in the query
ref pointer to Item* variable where pointer to resulting "fixed"
item is to be assigned
DESCRIPTION
This function performs context analysis (name resolution) and calculates
various attributes of the item tree with Item_func_in as its root.
The function saves in ref the pointer to the item or to a newly created
item that is considered as a replacement for the original one.
NOTES
Let T0(e)/T1(e) be the value of not_null_tables(e) when e is used on
a predicate/function level. Then it's easy to show that:
T0(e IN(e1,...,en)) = union(T1(e),intersection(T1(ei)))
T1(e IN(e1,...,en)) = union(T1(e),intersection(T1(ei)))
T0(e NOT IN(e1,...,en)) = union(T1(e),union(T1(ei)))
T1(e NOT IN(e1,...,en)) = union(T1(e),intersection(T1(ei)))
RETURN
0 ok
1 got error
*/
bool
Item_func_in::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
{
Item **arg, **arg_end;
if (Item_func_opt_neg::fix_fields(thd, tables, ref))
return 1;
/* not_null_tables_cache == union(T1(e),union(T1(ei))) */
if (pred_level && negated)
return 0;
/* not_null_tables_cache = union(T1(e),intersection(T1(ei))) */
not_null_tables_cache= ~(table_map) 0;
for (arg= args + 1, arg_end= args + arg_count; arg != arg_end; arg++)
not_null_tables_cache&= (*arg)->not_null_tables();
not_null_tables_cache|= (*args)->not_null_tables();
return 0;
}
static int srtcmp_in(CHARSET_INFO *cs, const String *x,const String *y)
{
return cs->coll->strnncollsp(cs,
......@@ -1840,7 +1982,7 @@ longlong Item_func_in::val_int()
{
int tmp=array->find(args[0]);
null_value=args[0]->null_value || (!tmp && have_null);
return tmp;
return (longlong) (!null_value && tmp != negated);
}
in_item->store_value(args[0]);
if ((null_value=args[0]->null_value))
......@@ -1849,11 +1991,11 @@ longlong Item_func_in::val_int()
for (uint i=1 ; i < arg_count ; i++)
{
if (!in_item->cmp(args[i]) && !args[i]->null_value)
return 1; // Would maybe be nice with i ?
return (longlong) (!negated);
have_null|= args[i]->null_value;
}
null_value= have_null;
return 0;
return (longlong) (!null_value && negated);
}
......@@ -2293,7 +2435,42 @@ bool Item_func_like::fix_fields(THD *thd, TABLE_LIST *tlist, Item ** ref)
{
/* If we are on execution stage */
String *escape_str= escape_item->val_str(&tmp_value1);
escape= escape_str ? *(escape_str->ptr()) : '\\';
if (escape_str)
{
CHARSET_INFO *cs= cmp.cmp_collation.collation;
if (use_mb(cs))
{
my_wc_t wc;
int rc= cs->cset->mb_wc(cs, &wc,
(const uchar*) escape_str->ptr(),
(const uchar*) escape_str->ptr() +
escape_str->length());
escape= (int) (rc > 0 ? wc : '\\');
}
else
{
/*
In the case of 8bit character set, we pass native
code instead of Unicode code as "escape" argument.
Convert to "cs" if charset of escape differs.
*/
uint32 unused;
if (escape_str->needs_conversion(escape_str->length(),
escape_str->charset(), cs, &unused))
{
char ch;
uint errors;
uint32 cnvlen= copy_and_convert(&ch, 1, cs, escape_str->ptr(),
escape_str->length(),
escape_str->charset(), &errors);
escape= cnvlen ? ch : '\\';
}
else
escape= *(escape_str->ptr());
}
}
else
escape= '\\';
/*
We could also do boyer-more for non-const items, but as we would have to
......
sql/item_cmpfunc.h
View file @ 1e6736b5
......@@ -358,17 +358,49 @@ public:
};
class Item_func_between :public Item_int_func
/*
The class Item_func_opt_neg is defined to factor out the functionality
common for the classes Item_func_between and Item_func_in. The objects
of these classes can express predicates or there negations.
The alternative approach would be to create pairs Item_func_between,
Item_func_notbetween and Item_func_in, Item_func_notin.
*/
class Item_func_opt_neg :public Item_int_func
{
public:
bool negated; /* <=> the item represents NOT <func> */
bool pred_level; /* <=> [NOT] <func> is used on a predicate level */
public:
Item_func_opt_neg(Item *a, Item *b, Item *c)
:Item_int_func(a, b, c), negated(0), pred_level(0) {}
Item_func_opt_neg(List<Item> &list)
:Item_int_func(list), negated(0), pred_level(0) {}
public:
inline void negate() { negated= !negated; }
inline void top_level_item() { pred_level= 1; }
Item *neg_transformer(THD *thd)
{
negated= !negated;
return this;
}
};
class Item_func_between :public Item_func_opt_neg
{
DTCollation cmp_collation;
public:
Item_result cmp_type;
String value0,value1,value2;
Item_func_between(Item *a,Item *b,Item *c) :Item_int_func(a,b,c) {}
Item_func_between(Item *a, Item *b, Item *c)
:Item_func_opt_neg(a, b, c) {}
longlong val_int();
optimize_type select_optimize() const { return OPTIMIZE_KEY; }
enum Functype functype() const { return BETWEEN; }
const char *func_name() const { return "between"; }
bool fix_fields(THD *, struct st_table_list *, Item **);
void fix_length_and_dec();
void print(String *str);
CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
......@@ -433,15 +465,9 @@ public:
longlong val_int();
String *val_str(String *str);
enum Item_result result_type () const { return cached_result_type; }
bool fix_fields(THD *thd,struct st_table_list *tlist, Item **ref)
{
DBUG_ASSERT(fixed == 0);
args[0]->top_level_item();
return Item_func::fix_fields(thd, tlist, ref);
}
bool fix_fields(THD *, struct st_table_list *, Item **);
void fix_length_and_dec();
const char *func_name() const { return "if"; }
table_map not_null_tables() const { return 0; }
};
......@@ -736,7 +762,7 @@ public:
}
};
class Item_func_in :public Item_int_func
class Item_func_in :public Item_func_opt_neg
{
Item_result cmp_type;
in_vector *array;
......@@ -745,11 +771,12 @@ class Item_func_in :public Item_int_func
DTCollation cmp_collation;
public:
Item_func_in(List<Item> &list)
:Item_int_func(list), array(0), in_item(0), have_null(0)
:Item_func_opt_neg(list), array(0), in_item(0), have_null(0)
{
allowed_arg_cols= 0; // Fetch this value from first argument
}
longlong val_int();
bool fix_fields(THD *, struct st_table_list *, Item **);
void fix_length_and_dec();
void cleanup()
{
......@@ -769,12 +796,6 @@ class Item_func_in :public Item_int_func
bool nulls_in_row();
bool is_bool_func() { return 1; }
CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
/*
IN() protect from NULL only first argument, if construction like
"expression IN ()" will be allowed, we will need to check number of
argument here, because "NOT(NULL IN ())" is TRUE.
*/
table_map not_null_tables() const { return args[0]->not_null_tables(); }
};
/* Functions used by where clause */
......@@ -879,7 +900,7 @@ class Item_func_like :public Item_bool_func2
Item *escape_item;
public:
char escape;
int escape;
Item_func_like(Item *a,Item *b, Item *escape_arg)
:Item_bool_func2(a,b), canDoTurboBM(FALSE), pattern(0), pattern_len(0),
......
sql/item_sum.cc
View file @ 1e6736b5
......@@ -1937,6 +1937,7 @@ Item_func_group_concat::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
args, arg_count, MY_COLL_ALLOW_CONV))
return 1;
result.set_charset(collation.collation);
result_field= 0;
null_value= 1;
max_length= group_concat_max_len;
......
sql/opt_range.cc
View file @ 1e6736b5
......@@ -849,7 +849,8 @@ static SEL_TREE *get_mm_tree(PARAM *param,COND *cond)
if (cond_func->functype() == Item_func::BETWEEN)
{
if (cond_func->arguments()[0]->type() == Item::FIELD_ITEM)
if (!((Item_func_between *)(cond_func))->negated &&
cond_func->arguments()[0]->type() == Item::FIELD_ITEM)
{
Field *field=((Item_field*) (cond_func->arguments()[0]))->field;
Item_result cmp_type=field->cmp_type();
......@@ -866,7 +867,7 @@ static SEL_TREE *get_mm_tree(PARAM *param,COND *cond)
if (cond_func->functype() == Item_func::IN_FUNC)
{ // COND OR
Item_func_in *func=(Item_func_in*) cond_func;
if (func->key_item()->type() == Item::FIELD_ITEM)
if (!func->negated && func->key_item()->type() == Item::FIELD_ITEM)
{
Field *field=((Item_field*) (func->key_item()))->field;
Item_result cmp_type=field->cmp_type();
......
sql/sql_yacc.yy
View file @ 1e6736b5
......@@ -2598,7 +2598,12 @@ expr_expr:
expr IN_SYM '(' expr_list ')'
{ $4->push_front($1); $$= new Item_func_in(*$4); }
| expr NOT IN_SYM '(' expr_list ')'
{ $5->push_front($1); $$= new Item_func_not(new Item_func_in(*$5)); }
{
$5->push_front($1);
Item_func_in *item= new Item_func_in(*$5);
item->negate();
$$= item;
}
| expr IN_SYM in_subselect
{ $$= new Item_in_subselect($1, $3); }
| expr NOT IN_SYM in_subselect
......@@ -2608,7 +2613,11 @@ expr_expr:
| expr BETWEEN_SYM no_and_expr AND_SYM expr
{ $$= new Item_func_between($1,$3,$5); }
| expr NOT BETWEEN_SYM no_and_expr AND_SYM expr
{ $$= new Item_func_not(new Item_func_between($1,$4,$6)); }
{
Item_func_between *item= new Item_func_between($1,$4,$6);
item->negate();
$$= item;
}
| expr OR_OR_CONCAT expr { $$= or_or_concat(YYTHD, $1,$3); }
| expr OR_SYM expr { $$= new Item_cond_or($1,$3); }
| expr XOR expr { $$= new Item_cond_xor($1,$3); }
......@@ -2656,7 +2665,11 @@ no_in_expr:
no_in_expr BETWEEN_SYM no_and_expr AND_SYM expr
{ $$= new Item_func_between($1,$3,$5); }
| no_in_expr NOT BETWEEN_SYM no_and_expr AND_SYM expr
{ $$= new Item_func_not(new Item_func_between($1,$4,$6)); }
{
Item_func_between *item= new Item_func_between($1,$4,$6);
item->negate();
$$= item;
}
| no_in_expr OR_OR_CONCAT expr { $$= or_or_concat(YYTHD, $1,$3); }
| no_in_expr OR_SYM expr { $$= new Item_cond_or($1,$3); }
| no_in_expr XOR expr { $$= new Item_cond_xor($1,$3); }
......@@ -2704,7 +2717,12 @@ no_and_expr:
no_and_expr IN_SYM '(' expr_list ')'
{ $4->push_front($1); $$= new Item_func_in(*$4); }
| no_and_expr NOT IN_SYM '(' expr_list ')'
{ $5->push_front($1); $$= new Item_func_not(new Item_func_in(*$5)); }
{
$5->push_front($1);
Item_func_in *item= new Item_func_in(*$5);
item->negate();
$$= item;
}
| no_and_expr IN_SYM in_subselect
{ $$= new Item_in_subselect($1, $3); }
| no_and_expr NOT IN_SYM in_subselect
......@@ -2714,7 +2732,11 @@ no_and_expr:
| no_and_expr BETWEEN_SYM no_and_expr AND_SYM expr
{ $$= new Item_func_between($1,$3,$5); }
| no_and_expr NOT BETWEEN_SYM no_and_expr AND_SYM expr
{ $$= new Item_func_not(new Item_func_between($1,$4,$6)); }
{
Item_func_between *item= new Item_func_between($1,$4,$6);
item->negate();
$$= item;
}
| no_and_expr OR_OR_CONCAT expr { $$= or_or_concat(YYTHD, $1,$3); }
| no_and_expr OR_SYM expr { $$= new Item_cond_or($1,$3); }
| no_and_expr XOR expr { $$= new Item_cond_xor($1,$3); }
......
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