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  1. MariaDB Server
  2. MDEV-24618

Assertion failure when TVC uses a row in the context expecting a scalar value

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      Description

      select * from (values ((1,2)))dt;
      

      10.3 f130adbf35b5b8ef7ed09

      Version: '10.3.28-MariaDB-debug-log'  
      mysqld: /10.3/sql/sql_type.h:1592: virtual bool Type_handler_row::Item_hybrid_func_fix_attributes(THD*, const char*, Type_handler_hybrid_field_type*, Type_all_attributes*, Item**, uint) const: Assertion `0' failed.
      210118 17:22:18 [ERROR] mysqld got signal 6 ;
       
      Server version: 10.3.28-MariaDB-debug-log
       
      linux/raise.c:51(__GI_raise)[0x7ff1384ad7bb]
      stdlib/abort.c:81(__GI_abort)[0x7ff138498535]
      intl/loadmsgcat.c:1177(_nl_load_domain)[0x7ff13849840f]
      /lib/x86_64-linux-gnu/libc.so.6(+0x30102)[0x7ff1384a6102]
      sql/sql_type.h:1593(Type_handler_row::Item_hybrid_func_fix_attributes(THD*, char const*, Type_handler_hybrid_field_type*, Type_all_attributes*, Item**, unsigned int) const)[0x565088ca52c1]
      sql/sql_class.h:6774(Type_holder::aggregate_attributes(THD*))[0x565088a1aca4]
      sql/sql_tvc.cc:191(get_type_attributes_for_tvc(THD*, List_iterator_fast<List<Item> >&, Type_holder*, unsigned int, unsigned int))[0x565088cdb159]
      sql/sql_tvc.cc:242(table_value_constr::prepare(THD*, st_select_lex*, select_result*, st_select_lex_unit*))[0x565088cdb72d]
      sql/sql_union.cc:1029(st_select_lex_unit::prepare(TABLE_LIST*, select_result*, unsigned long))[0x565088a0d2af]
      sql/sql_derived.cc:771(mysql_derived_prepare(THD*, LEX*, TABLE_LIST*))[0x56508869862b]
      sql/sql_derived.cc:199(mysql_handle_single_derived(LEX*, TABLE_LIST*, unsigned int))[0x565088694e35]
      sql/table.cc:8362(TABLE_LIST::handle_derived(LEX*, unsigned int))[0x565088a938b7]
      sql/sql_lex.h:4004(LEX::handle_list_of_derived(TABLE_LIST*, unsigned int))[0x5650886dc9a2]
      sql/sql_lex.cc:4164(st_select_lex::handle_derived(LEX*, unsigned int))[0x5650886fe8b9]
      sql/sql_select.cc:1049(JOIN::prepare(TABLE_LIST*, unsigned int, Item*, unsigned int, st_order*, bool, st_order*, Item*, st_order*, st_select_lex*, st_select_lex_unit*))[0x56508880baf9]
      sql/sql_select.cc:4297(mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*))[0x56508882e58c]
      sql/sql_select.cc:370(handle_select(THD*, LEX*, select_result*, unsigned long))[0x565088805384]
      sql/sql_parse.cc:6316(execute_sqlcom_select(THD*, TABLE_LIST*))[0x5650887717a0]
      sql/sql_parse.cc:3847(mysql_execute_command(THD*))[0x56508875f2e0]
      sql/sql_parse.cc:7840(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x56508877b897]
      sql/sql_parse.cc:1855(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x565088751f6c]
      sql/sql_parse.cc:1398(do_command(THD*))[0x56508874e6a7]
      sql/sql_connect.cc:1403(do_handle_one_connection(CONNECT*))[0x565088b3f61c]
      sql/sql_connect.cc:1309(handle_one_connection)[0x565088b3eed4]
      perfschema/pfs.cc:1871(pfs_spawn_thread)[0x56508a2a5295]
      nptl/pthread_create.c:487(start_thread)[0x7ff138bebfa3]
      x86_64/clone.S:97(clone)[0x7ff13856f4cf]
       
      Query (0x62b000000410): select * from (values ((1,2)))dt
      
      

      on a non-debug build - wrong results.

      MariaDB [test]> select * from (values ((1,2)))dt;
      Query OK, 0 rows affected (0.000 sec)
       
      MariaDB [test]> create table t1  select * from (values ((1,2)))dt;
      Query OK, 0 rows affected (0.000 sec)
       
      MariaDB [test]> show tables;  #table was not created
      Empty set (0.000 sec)
      

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              Assignee:
              igor Igor Babaev
              Reporter:
              alice Alice Sherepa
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                Updated:
                Resolved:

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