• unknown's avatar
    Fix Bug #21328 mysqld issues warnings on ALTER CSV table to MyISAM · 178acd10
    unknown authored
    
    mysql-test/r/csv.result:
      update result file
    mysql-test/r/log_tables.result:
      log_tables test contains alter of a CSV table with
      NULLs which results in warnings. In fact this is how
      the bug noticed. So, now when it is fixed we should
      update result file.
    mysql-test/t/csv.test:
      add a test for the bug
    storage/csv/ha_tina.cc:
      We should write 0 to the data file in the
      case we meet NULL. CSV does not support
      NULL values internally and we shouldn't
      distinguish them from 0 when writing a row
      (the alternative is to implement full NULL
      support). Otherwise other routines (such as
      Field::check_int() become confused).
      In 5.0 NULLs are stored as zeroes. In 5.1 it
      somehow turned into empty string. Which is wrong.
    178acd10
log_tables.result 13.2 KB