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Code Activity

support of subselect without FROM reducing (SCRUM)

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fixed bug of calling setup_fields without correct lex->current_select pointer in mysql_derived
more correct creation of reference in Item_field::fix_field


mysql-test/r/subselect.result:
  new explain with subselect reduced
mysql-test/t/subselect.test:
  new explain with subselect reduced
sql/item.cc:
  support of subselect without FROM reducing
  more correct creation of reference in Item_field::fix_field
sql/item.h:
  support of subselect without FROM reducing
sql/item_cmpfunc.cc:
  support of subselect without FROM reducing
sql/item_cmpfunc.h:
  support of subselect without FROM reducing
sql/item_func.cc:
  support of subselect without FROM reducing
sql/item_func.h:
  support of subselect without FROM reducing
sql/item_row.cc:
  support of subselect without FROM reducing
sql/item_row.h:
  support of subselect without FROM reducing
sql/item_strfunc.h:
  fixed layout
  support of subselect without FROM reducing
sql/item_subselect.cc:
  support of subselect without FROM reducing
sql/item_subselect.h:
  support of subselect without FROM reducing
sql/mysql_priv.h:
  reference in Item_field::fix_field related changes
sql/sql_base.cc:
  reference in Item_field::fix_field related changes
sql/sql_derived.cc:
  fixed bug of calling setup_fields without correct lex->current_select pointer
This commit is contained in:
unknown
2002-12-26 01:28:59 +02:00
parent da4d8e1b62
commit 1dfa625f7b
16 changed files with 223 additions and 34 deletions
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9
sql/sql_derived.cc
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@ -63,6 +63,7 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
TMP_TABLE_PARAM tmp_table_param;
bool is_union=sl->next_select() && sl->next_select()->linkage == UNION_TYPE;
DBUG_ENTER("mysql_derived");
SELECT_LEX_NODE *save_current_select= lex->current_select;
/*
@ -111,6 +112,7 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
}
}
lex->current_select= sl;
if (setup_fields(thd,tables,item_list,0,0,1))
{
res=-1;
@ -119,7 +121,8 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
bzero((char*) &tmp_table_param,sizeof(tmp_table_param));
tmp_table_param.field_count=item_list.elements;
if (!(table=create_tmp_table(thd, &tmp_table_param, item_list,
(ORDER*) 0, is_union && !unit->union_option, 1,
(ORDER*) 0,
is_union && !unit->union_option, 1,
(sl->options | thd->options |
TMP_TABLE_ALL_COLUMNS),
HA_POS_ERROR)))
@ -138,8 +141,6 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
if (unit->select_limit_cnt == HA_POS_ERROR)
sl->options&= ~OPTION_FOUND_ROWS;
SELECT_LEX_NODE *save_current_select= lex->current_select;
lex->current_select= sl;
if (is_union)
res=mysql_union(thd,lex,derived_result,unit);
else
@ -149,7 +150,6 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
sl->having, (ORDER*) NULL,
sl->options | thd->options | SELECT_NO_UNLOCK,
derived_result, unit, sl, 0);
lex->current_select= save_current_select;
if (!res)
{
@ -184,6 +184,7 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
if (res)
free_tmp_table(thd,table);
exit:
lex->current_select= save_current_select;
close_thread_tables(thd);
}
DBUG_RETURN(res);