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  1. MariaDB Server
  2. MDEV-15122

Simultaneous assignment for LOAD..SET

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    • Type: Task
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Fix Version/s: None
    • Component/s: OTHER
    • Labels:
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      Description

      We're going to have a new sql_mode soon for simultaneous assignments (MDEV-13417).

      It would be nice to make LOAD..SET also honor this new sql_mode.

      Currently this script:

      SELECT 1,2 INTO OUTFILE 'test.txt';
      CREATE OR REPLACE TABLE t1 (a INT, b INT,c INT);
      LOAD DATA INFILE 'test.txt' INTO TABLE t1 (a,b);
      LOAD DATA INFILE 'test.txt' INTO TABLE t1 (a,b) SET c=a;
      LOAD DATA INFILE 'test.txt' INTO TABLE t1 (a,b) SET a=5,c=a;
      SELECT * FROM t1;
      

      returns this:

      +------+------+------+
      | a    | b    | c    |
      +------+------+------+
      |    1 |    2 | NULL |
      |    1 |    2 |    1 |
      |    5 |    2 |    5 |
      +------+------+------+
      

      With the new sql_mode, the third row should instead of (5,2,5) return (5,2,1), i.e. assignment of c should use the initial value of a which came from the file, before a=5 was done.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              bar Alexander Barkov
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                Updated:

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