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  1. MariaDB Server
  2. MDEV-15881

Assertion `is_valid_value_slow()' failed in Datetime::Datetime or corrupt data after ALTER with indexed persistent column

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      CREATE TABLE t1 (i INT, d1 DATE, d2 DATE NOT NULL, t TIMESTAMP, KEY(t)) ENGINE=MyISAM;
      INSERT INTO t1 VALUES  (1,'2023-03-16','2023-03-15','2012-12-12 12:12:12');
      ALTER TABLE t1 MODIFY t FLOAT AS (i) PERSISTENT;
      SELECT i, d1, d2 FROM t1 INTO OUTFILE 'load_t1';
      DELETE FROM t1;
      LOAD DATA INFILE 'load_t1' INTO TABLE t1 (i,d1,d2);
      SELECT * FROM t1 WHERE d2 < d1;
       
      # Cleanup
      --let $datadir= `SELECT @@datadir`
      --remove_file $datadir/test/load_t1
      DROP TABLE t1;
      

      10.3 df51dc28

      mysqld: /data/src/10.3/sql/sql_type.h:374: Datetime::Datetime(THD*, Item*, sql_mode_t): Assertion `is_valid_value_slow()' failed.
      190220  1:24:01 [ERROR] mysqld got signal 6 ;
       
      #7  0x00007f93b73d0ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
      #8  0x00005621f32aeca2 in Datetime::Datetime (this=0x7f93b1575a40, thd=0x7f93a0000b00, item=0x7f93a0015558, flags=33554433) at /data/src/10.3/sql/sql_type.h:374
      #9  0x00005621f32af89e in Item::val_datetime_packed (this=0x7f93a0015558) at /data/src/10.3/sql/item.h:1504
      #10 0x00005621f36efaf1 in Arg_comparator::compare_datetime (this=0x7f93a0015840) at /data/src/10.3/sql/item_cmpfunc.cc:736
      #11 0x00005621f3704094 in Arg_comparator::compare (this=0x7f93a0015840) at /data/src/10.3/sql/item_cmpfunc.h:102
      #12 0x00005621f36f3033 in Item_func_lt::val_int (this=0x7f93a0015780) at /data/src/10.3/sql/item_cmpfunc.cc:1782
      #13 0x00005621f372c0e1 in eval_const_cond (cond=0x7f93a0015780) at /data/src/10.3/sql/item_func.cc:81
      #14 0x00005621f34212ca in Item_bool_func2::remove_eq_conds (this=0x7f93a0015780, thd=0x7f93a0000b00, cond_value=0x7f93a0015ce8, top_level_arg=true) at /data/src/10.3/sql/sql_select.cc:16387
      #15 0x00005621f3404076 in make_join_statistics (join=0x7f93a00159d8, tables_list=..., keyuse_array=0x7f93a0015cc8) at /data/src/10.3/sql/sql_select.cc:4865
      #16 0x00005621f33f9c73 in JOIN::optimize_inner (this=0x7f93a00159d8) at /data/src/10.3/sql/sql_select.cc:1888
      #17 0x00005621f33f82cb in JOIN::optimize (this=0x7f93a00159d8) at /data/src/10.3/sql/sql_select.cc:1451
      #18 0x00005621f3401ef2 in mysql_select (thd=0x7f93a0000b00, tables=0x7f93a0014ef0, wild_num=1, fields=..., conds=0x7f93a0015780, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x7f93a00159b0, unit=0x7f93a00049b8, select_lex=0x7f93a0005128) at /data/src/10.3/sql/sql_select.cc:4225
      #19 0x00005621f33f3eb4 in handle_select (thd=0x7f93a0000b00, lex=0x7f93a00048f0, result=0x7f93a00159b0, setup_tables_done_option=0) at /data/src/10.3/sql/sql_select.cc:385
      #20 0x00005621f33be8ec in execute_sqlcom_select (thd=0x7f93a0000b00, all_tables=0x7f93a0014ef0) at /data/src/10.3/sql/sql_parse.cc:6551
      #21 0x00005621f33b4f5d in mysql_execute_command (thd=0x7f93a0000b00) at /data/src/10.3/sql/sql_parse.cc:3772
      #22 0x00005621f33c28a5 in mysql_parse (thd=0x7f93a0000b00, rawbuf=0x7f93a0014ce8 "SELECT * FROM t1 WHERE d2 < d1", length=30, parser_state=0x7f93b15775f0, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:8095
      #23 0x00005621f33afa59 in dispatch_command (command=COM_QUERY, thd=0x7f93a0000b00, packet=0x7f93a0126141 "SELECT * FROM t1 WHERE d2 < d1", packet_length=30, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1854
      #24 0x00005621f33ae431 in do_command (thd=0x7f93a0000b00) at /data/src/10.3/sql/sql_parse.cc:1396
      #25 0x00005621f351674f in do_handle_one_connection (connect=0x5621f5aef8a0) at /data/src/10.3/sql/sql_connect.cc:1403
      #26 0x00005621f35164d3 in handle_one_connection (arg=0x5621f5aef8a0) at /data/src/10.3/sql/sql_connect.cc:1309
      #27 0x00005621f39b22e1 in pfs_spawn_thread (arg=0x5621f5b3c4c0) at /data/src/10.3/storage/perfschema/pfs.cc:1862
      #28 0x00007f93b90a7494 in start_thread (arg=0x7f93b1578700) at pthread_create.c:333
      #29 0x00007f93b748d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6
      

      Same on 10.4 debug.

      10.2 and non-debug builds of 10.3/10.4 don't crash, but produce different kinds of meaningless output:

      SELECT * FROM t1 WHERE d2 < d1;
      i	d1	d2	t
      

      i	d1	d2	t
      1118830592	0000-03-31	0000-00-00	NULL
      

      etc.

      10.1 works okay:

      SELECT * FROM t1 WHERE d2 < d1;
      i	d1	d2	t
      1	2023-03-16	2023-03-15	1
      

      Note: i field is not important for the scenario, it's there only to make the test case applicable to 10.1 which doesn't allow a constant in the virtual column expression.

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              Assignee:
              bar Alexander Barkov
              Reporter:
              elenst Elena Stepanova
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                Updated:
                Resolved:

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