diff options
Diffstat (limited to 'sql/opt_subselect.cc')
| -rw-r--r-- | sql/opt_subselect.cc | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sql/opt_subselect.cc b/sql/opt_subselect.cc index e70e5a784ba..753722fac08 100644 --- a/sql/opt_subselect.cc +++ b/sql/opt_subselect.cc @@ -853,8 +853,7 @@ bool subquery_types_allow_materialization(Item_in_subselect *in_subs) create a blob column because item->max_length is too big. The following check is copied from Item::make_string_field(): */ - if (inner->max_length / inner->collation.collation->mbmaxlen > - CONVERT_IF_BIGGER_TO_BLOB) + if (inner->too_big_for_varchar()) { DBUG_RETURN(FALSE); } @@ -3865,6 +3864,7 @@ SJ_TMP_TABLE::create_sj_weedout_tmp_table(THD *thd) fn_format(path, path, mysql_tmpdir, "", MY_REPLACE_EXT|MY_UNPACK_FILENAME); /* STEP 2: Figure if we'll be using a key or blob+constraint */ + /* it always has my_charset_bin, so mbmaxlen==1 */ if (uniq_tuple_length_arg >= CONVERT_IF_BIGGER_TO_BLOB) using_unique_constraint= TRUE; |