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added FROM DUAL for derived tables

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unknown 2002-12-26 17:48:19 +02:00
parent 717656bb1c
commit 5265a1656e
3 changed files with 5 additions and 0 deletions
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3
mysql-test/r/derived.result
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@ -1,3 +1,6 @@
select * from (select 2 from DUAL) b;
2
2
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b; SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
Unknown column 'a' in 'field list' Unknown column 'a' in 'field list'
SELECT 1 as a FROM (SELECT a UNION SELECT 1) b; SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;

1
mysql-test/t/derived.test
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@ -1,3 +1,4 @@
select * from (select 2 from DUAL) b;
-- error 1054 -- error 1054
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b; SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
-- error 1054 -- error 1054

1
sql/sql_yacc.yy
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@ -997,6 +997,7 @@ merge_insert_types:
opt_select_from: opt_select_from:
opt_limit_clause {} opt_limit_clause {}
| FROM DUAL_SYM {}
| select_from select_lock_type; | select_from select_lock_type;
udf_func_type: udf_func_type: