|
mtr test:
CREATE TABLE t1(a INT);
|
DELIMITER $$;
|
CREATE FUNCTION f1() RETURNS VARCHAR(16383)
|
BEGIN
|
INSERT INTO t1 VALUES(1);
|
RETURN 'test';
|
END;
|
$$
|
DELIMITER ;$$
|
|
CREATE OR REPLACE TABLE t1 AS SELECT f1();
|
LOCK TABLE t1 WRITE;
|
CREATE OR REPLACE TABLE t1 AS SELECT f1();
|
UNLOCK TABLES;
|
|
DROP FUNCTION f1;
|
DROP TABLE t1;
|
There's a guard in mysql_execute_command() that prevents referencing the same table multiple times:
if ((create_info.options & HA_LEX_CREATE_REPLACE) &&
|
!create_info.tmp_table())
|
{
|
TABLE_LIST *duplicate;
|
if ((duplicate= unique_table(thd, lex->query_tables,
|
lex->query_tables->next_global,
|
0)))
|
{
|
update_non_unique_table_error(lex->query_tables, "CREATE",
|
duplicate);
|
res= TRUE;
|
goto end_with_restore_list;
|
}
|
}
|
But it doesn't work because find_dup_table() has this condition:
/*
|
Skip if marked to be excluded (could be a derived table) or if
|
entry is a prelocking placeholder.
|
*/
|
if (res->select_lex &&
|
!res->select_lex->exclude_from_table_unique_test &&
|
!res->prelocking_placeholder)
|
break;
|
|
10.3 d71a8855ee
|
mysqld: /data/src/10.3/sql/table_cache.cc:1147: bool tdc_remove_table(THD*, enum_tdc_remove_table_type, const char*, const char*, bool): Assertion `element->all_tables.is_empty() || remove_type != TDC_RT_REMOVE_ALL' failed.
|
180420 17:59:32 [ERROR] mysqld got signal 6 ;
|
|
#7 0x00007fe3ce535ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
|
#8 0x000055b9b0a18e85 in tdc_remove_table (thd=0x7fe360000b00, remove_type=TDC_RT_REMOVE_ALL, db=0x7fe360013fd8 "test", table_name=0x7fe360013950 "t1", kill_delayed_threads=false) at /data/src/10.3/sql/table_cache.cc:1147
|
#9 0x000055b9b08c1e4d in mysql_rm_table_no_locks (thd=0x7fe360000b00, tables=0x7fe3cc2335d0, if_exists=false, drop_temporary=false, drop_view=false, drop_sequence=false, dont_log_query=true, dont_free_locks=true) at /data/src/10.3/sql/sql_table.cc:2502
|
#10 0x000055b9b08c8d60 in create_table_impl (thd=0x7fe360000b00, orig_db=0x7fe3600139a0, orig_table_name=0x7fe3600139b0, db=0x7fe3600139a0, table_name=0x7fe3600139b0, path=0x7fe3cc233d00 "./test/t1", options=..., create_info=0x7fe3cc2357e0, alter_info=0x7fe3cc235720, create_table_mode=1, is_trans=0x0, key_info=0x7fe3cc233ce0, key_count=0x7fe3cc233cd4, frm=0x7fe3cc233cf0) at /data/src/10.3/sql/sql_table.cc:4878
|
#11 0x000055b9b08c9802 in mysql_create_table_no_lock (thd=0x7fe360000b00, db=0x7fe3600139a0, table_name=0x7fe3600139b0, create_info=0x7fe3cc2357e0, alter_info=0x7fe3cc235720, is_trans=0x0, create_table_mode=1, table_list=0x7fe360013988) at /data/src/10.3/sql/sql_table.cc:5082
|
#12 0x000055b9b07c72c8 in select_create::create_table_from_items (this=0x7fe360015f88, thd=0x7fe360000b00, items=0x7fe3cc235160, lock=0x7fe3cc235150, hooks=0x7fe3cc2351a0) at /data/src/10.3/sql/sql_insert.cc:4228
|
#13 0x000055b9b07c7a25 in select_create::prepare (this=0x7fe360015f88, _values=..., u=0x7fe360004948) at /data/src/10.3/sql/sql_insert.cc:4403
|
#14 0x000055b9b083bbf7 in JOIN::prepare (this=0x7fe360016078, tables_init=0x0, wild_num=0, conds_init=0x0, og_num=0, order_init=0x0, skip_order_by=false, group_init=0x0, having_init=0x0, proc_param_init=0x0, select_lex_arg=0x7fe3600050c0, unit_arg=0x7fe360004948) at /data/src/10.3/sql/sql_select.cc:1331
|
#15 0x000055b9b08457db in mysql_select (thd=0x7fe360000b00, tables=0x0, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2416184064, result=0x7fe360015f88, unit=0x7fe360004948, select_lex=0x7fe3600050c0) at /data/src/10.3/sql/sql_select.cc:4130
|
#16 0x000055b9b0837deb in handle_select (thd=0x7fe360000b00, lex=0x7fe360004880, result=0x7fe360015f88, setup_tables_done_option=0) at /data/src/10.3/sql/sql_select.cc:382
|
#17 0x000055b9b07fad44 in mysql_execute_command (thd=0x7fe360000b00) at /data/src/10.3/sql/sql_parse.cc:4238
|
#18 0x000055b9b0806cf4 in mysql_parse (thd=0x7fe360000b00, rawbuf=0x7fe360013888 "CREATE OR REPLACE TABLE t1 AS SELECT f1()", length=41, parser_state=0x7fe3cc236620, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:8001
|
#19 0x000055b9b07f44d7 in dispatch_command (command=COM_QUERY, thd=0x7fe360000b00, packet=0x7fe36001bab1 "CREATE OR REPLACE TABLE t1 AS SELECT f1()", packet_length=41, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1846
|
#20 0x000055b9b07f2f16 in do_command (thd=0x7fe360000b00) at /data/src/10.3/sql/sql_parse.cc:1391
|
#21 0x000055b9b0955a13 in do_handle_one_connection (connect=0x55b9b4016920) at /data/src/10.3/sql/sql_connect.cc:1402
|
#22 0x000055b9b09557a0 in handle_one_connection (arg=0x55b9b4016920) at /data/src/10.3/sql/sql_connect.cc:1308
|
#23 0x00007fe3d020c494 in start_thread (arg=0x7fe3cc237700) at pthread_create.c:333
|
#24 0x00007fe3ce5f293f in clone () from /lib/x86_64-linux-gnu/libc.so.6
|
|