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Fix for BUG#5837 - attempt 3.

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Call mark_as_null_row in join_read_const and join_read_system.


mysql-test/r/multi_update.result:
  Testcase for BUG#5837
mysql-test/t/multi_update.test:
  Testcase for BUG#5837
sql/table.h:
  Added comments
This commit is contained in:
unknown 2004-12-11 15:51:52 +03:00
commit 8e4251dd85
4 changed files with 31 additions and 4 deletions
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10
sql/table.h
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@ -89,8 +89,14 @@ struct st_table {
int current_lock; /* Type of lock on table */
enum tmp_table_type tmp_table;
my_bool copy_blobs; /* copy_blobs when storing */
my_bool null_row; /* All columns are null */
my_bool maybe_null,outer_join; /* Used with OUTER JOIN */
/*
Used in outer joins: if true, all columns are considered to have NULL
values, including columns declared as "not null".
*/
my_bool null_row;
/* 0 or JOIN_TYPE_{LEFT|RIGHT}, same as TABLE_LIST::outer_join */
my_bool outer_join;
my_bool maybe_null; /* true if (outer_join != 0) */
my_bool force_index;
my_bool distinct,const_table,no_rows;
my_bool key_read, bulk_insert;