CREATE TABLE x (a INT);
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PREPARE stmt FROM "WITH x AS (SELECT * FROM x) SELECT * FROM x";
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EXECUTE stmt;
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EXECUTE stmt;
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# Cleanup
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DROP TABLE x;
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Second EXECUTE hangs, seemingly forever. Stack trace from the running server:
10.4 db537a83
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Thread 6 (Thread 0x7f4c542de700 (LWP 12824)):
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#0 0x000055dfe883df23 in st_select_lex::find_table_def_in_with_clauses (this=0x7f4c1f521078, table=0x7f4c1f521638) at /data/src/10.4/sql/sql_cte.cc:1071
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#1 0x000055dfe855b4d2 in open_and_process_table (thd=0x7f4c38000af0, tables=0x7f4c1f521638, counter=0x7f4c542dbbf4, flags=0, prelocking_strategy=0x7f4c542dbc78, has_prelocking_list=false, ot_ctx=0x7f4c542dbb60) at /data/src/10.4/sql/sql_base.cc:3660
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#2 0x000055dfe855cf9d in open_tables (thd=0x7f4c38000af0, options=..., start=0x7f4c542dbbd8, counter=0x7f4c542dbbf4, flags=0, prelocking_strategy=0x7f4c542dbc78) at /data/src/10.4/sql/sql_base.cc:4324
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#3 0x000055dfe855f0de in open_and_lock_tables (thd=0x7f4c38000af0, options=..., tables=0x7f4c381772d8, derived=true, flags=0, prelocking_strategy=0x7f4c542dbc78) at /data/src/10.4/sql/sql_base.cc:5226
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#4 0x000055dfe8519033 in open_and_lock_tables (thd=0x7f4c38000af0, tables=0x7f4c381772d8, derived=true, flags=0) at /data/src/10.4/sql/sql_base.h:505
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#5 0x000055dfe8605690 in execute_sqlcom_select (thd=0x7f4c38000af0, all_tables=0x7f4c381772d8) at /data/src/10.4/sql/sql_parse.cc:6280
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#6 0x000055dfe85fc26b in mysql_execute_command (thd=0x7f4c38000af0) at /data/src/10.4/sql/sql_parse.cc:3898
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#7 0x000055dfe862965a in Prepared_statement::execute (this=0x7f4c3803fe70, expanded_query=0x7f4c542dcb50, open_cursor=false) at /data/src/10.4/sql/sql_prepare.cc:4760
|
#8 0x000055dfe8627abc in Prepared_statement::execute_loop (this=0x7f4c3803fe70, expanded_query=0x7f4c542dcb50, open_cursor=false, packet=0x0, packet_end=0x0) at /data/src/10.4/sql/sql_prepare.cc:4246
|
#9 0x000055dfe862558f in mysql_sql_stmt_execute (thd=0x7f4c38000af0) at /data/src/10.4/sql/sql_prepare.cc:3363
|
#10 0x000055dfe85fc2b0 in mysql_execute_command (thd=0x7f4c38000af0) at /data/src/10.4/sql/sql_parse.cc:3914
|
#11 0x000055dfe8609b65 in mysql_parse (thd=0x7f4c38000af0, rawbuf=0x7f4c38013198 "execute stmt", length=12, parser_state=0x7f4c542dd570, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:7900
|
#12 0x000055dfe85f6115 in dispatch_command (command=COM_QUERY, thd=0x7f4c38000af0, packet=0x7f4c38136341 "execute stmt", packet_length=12, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1842
|
#13 0x000055dfe85f48b7 in do_command (thd=0x7f4c38000af0) at /data/src/10.4/sql/sql_parse.cc:1360
|
#14 0x000055dfe877c426 in do_handle_one_connection (connect=0x55dfecb89db0) at /data/src/10.4/sql/sql_connect.cc:1412
|
#15 0x000055dfe877c175 in handle_one_connection (arg=0x55dfecb89db0) at /data/src/10.4/sql/sql_connect.cc:1316
|
#16 0x000055dfe917c1b1 in pfs_spawn_thread (arg=0x55dfeca9b670) at /data/src/10.4/storage/perfschema/pfs.cc:1869
|
#17 0x00007f4c5b8bb4a4 in start_thread (arg=0x7f4c542de700) at pthread_create.c:456
|
#18 0x00007f4c599efd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
|
Reproducible with at least MyISAM and InnoDB, on 10.2-10.5, debug and release builds alike, including old releases.
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