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A fix and test case for Bug#5985 ""prepare stmt from "select rand(?)"

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crashes server." The fix makes Item_func_rand prepared-statements
aware plus it fixes the case when RAND is used in prepared
statements and replication is on (as well as several similar issues).
Until now we did not reset THD before every execution of a prepared
statement, so if some execution had set thd->time_zone_used
or thd->rand_used they would not be reset until next mysql_parse.
Some of post-review fixes done.
This commit is contained in:
konstantin@mysql.com
2004-10-14 02:53:59 +04:00
parent cc57252bb7
commit 5abc3de22b
11 changed files with 159 additions and 54 deletions
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sql/mysql_priv.h
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@ -447,6 +447,7 @@ bool is_update_query(enum enum_sql_command command);
bool alloc_query(THD *thd, char *packet, ulong packet_length);
void mysql_init_select(LEX *lex);
void mysql_init_query(THD *thd, uchar *buf, uint length);
void mysql_reset_thd_for_next_command(THD *thd);
bool mysql_new_select(LEX *lex, bool move_down);
void create_select_for_variable(const char *var_name);
void mysql_init_multi_delete(LEX *lex);