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Give error if locked table is used twice in query. This fixes strange error message when doing LOCK TABLES t1 WRITE; INSERT TABLE t1 SELECT * from t1 (Bug #2296)

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monty@mysql.com
2004-02-03 09:46:48 +01:00
parent 31ad5e4903
commit 268521a61d
4 changed files with 14 additions and 2 deletions
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2
client/mysqldump.c
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@@ -154,7 +154,7 @@ static struct my_option my_long_options[] =
{"first-slave", 'x', "Locks all tables across all databases.",
(gptr*) &opt_first_slave, (gptr*) &opt_first_slave, 0, GET_BOOL, NO_ARG,
0, 0, 0, 0, 0, 0},
{"flush-logs", 'F', "Flush logs file in server before starting dump.",
{"flush-logs", 'F', "Flush logs file in server before starting dump. Note that if you use this option in combination with the --all-databases (or -A) option, the logs will be flushed for each database dumped.",
(gptr*) &flush_logs, (gptr*) &flush_logs, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
0, 0},
{"force", 'f', "Continue even if we get an sql-error.",

4
mysql-test/r/lock.result
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@@ -41,5 +41,9 @@ lock tables t1 write;
check table t2;
Table Op Msg_type Msg_text
test.t2 check error Table 't2' was not locked with LOCK TABLES
insert into t1 select nr from t1;
Table 't1' was not locked with LOCK TABLES
unlock tables;
lock tables t1 write, t1 as t1_alias read;
insert into t1 select index1,nr from t1 as t1_alias;
drop table t1,t2;

4
mysql-test/t/lock.test
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@@ -51,5 +51,9 @@ check table t1;
# Check error message
lock tables t1 write;
check table t2;
--error 1100
insert into t1 select nr from t1;
unlock tables;
lock tables t1 write, t1 as t1_alias read;
insert into t1 select index1,nr from t1 as t1_alias;
drop table t1,t2;

6
sql/sql_base.cc
View File

@@ -824,8 +824,12 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
{
if (table->key_length == key_length &&
!memcmp(table->table_cache_key,key,key_length) &&
!my_strcasecmp(table->table_name,alias))
!my_strcasecmp(table->table_name,alias) &&
table->query_id != thd->query_id)
{
table->query_id=thd->query_id;
goto reset;
}
}
my_printf_error(ER_TABLE_NOT_LOCKED,ER(ER_TABLE_NOT_LOCKED),MYF(0),alias);
DBUG_RETURN(0);