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fixed union types merging and table related metadata (BUG#8824)

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This commit is contained in:
bell@sanja.is.com.ua
2005-03-23 08:36:48 +02:00
parent 80d9cafa8f
commit 4554b1f263
17 changed files with 1171 additions and 424 deletions
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14
sql/sql_select.cc
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@@ -4836,14 +4836,7 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
return create_tmp_field_from_item(thd, item, table, copy_func, modify_item,
convert_blob_length);
case Item::TYPE_HOLDER:
{
Field *example= ((Item_type_holder *)item)->example();
if (example)
return create_tmp_field_from_field(thd, example, item, table, 0,
convert_blob_length);
return create_tmp_field_from_item(thd, item, table, copy_func, 0,
convert_blob_length);
}
return ((Item_type_holder *)item)->make_field_by_type(table);
default: // Dosen't have to be stored
return 0;
}
@@ -5340,8 +5333,6 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
if (create_myisam_tmp_table(table,param,select_options))
goto err;
}
/* Set table_name for easier debugging */
table->table_name= base_name(tmpname);
if (!open_tmp_table(table))
DBUG_RETURN(table);
@@ -9525,7 +9516,8 @@ int mysql_explain_union(THD *thd, SELECT_LEX_UNIT *unit, select_result *result)
unit->fake_select_lex->select_number= UINT_MAX; // jost for initialization
unit->fake_select_lex->type= "UNION RESULT";
unit->fake_select_lex->options|= SELECT_DESCRIBE;
if (!(res= unit->prepare(thd, result, SELECT_NO_UNLOCK | SELECT_DESCRIBE)))
if (!(res= unit->prepare(thd, result, SELECT_NO_UNLOCK | SELECT_DESCRIBE,
"")))
res= unit->exec();
res|= unit->cleanup();
}