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Move the test for an (illegal) scalar sub-query that returns more than one column to earlier in SELECT processing in order to avoid an assert() that can happen later on.

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FossilOrigin-Name: a55842cfb56b659c88832dce9ce7bafb50258211
This commit is contained in:
dan
2010-09-02 19:01:16 +00:00
parent 7ff2719e88
commit 74b617b22a
5 changed files with 100 additions and 36 deletions
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51
test/e_expr.test
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@ -1729,11 +1729,56 @@ foreach {tn e1 e2} {
do_expr_test e_expr-34.5.${tn}b $e2 integer $res
}
#-------------------------------------------------------------------------
# Test statements related to the IN and NOT IN operators.
# Test statements related to scalar sub-queries.
#
catch { db close }
file delete -force test.db
sqlite3 db test.db
do_test e_expr-35.0 {
execsql {
CREATE TABLE t2(a, b);
INSERT INTO t2 VALUES('one', 'two');
INSERT INTO t2 VALUES('three', NULL);
INSERT INTO t2 VALUES(4, 5.0);
}
} {}
# EVIDENCE-OF: R-00980-39256 A SELECT statement enclosed in parentheses
# may appear as a scalar quantity.
#
# EVIDENCE-OF: R-56294-03966 All types of SELECT statement, including
# aggregate and compound SELECT queries (queries with keywords like
# UNION or EXCEPT) are allowed as scalar subqueries.
#
do_expr_test e_expr-35.1.1 { (SELECT 35) } integer 35
do_expr_test e_expr-35.1.2 { (SELECT NULL) } null {}
do_expr_test e_expr-35.1.3 { (SELECT count(*) FROM t2) } integer 3
do_expr_test e_expr-35.1.4 { (SELECT 4 FROM t2) } integer 4
do_expr_test e_expr-35.1.5 {
(SELECT b FROM t2 UNION SELECT a+1 FROM t2)
} null {}
do_expr_test e_expr-35.1.6 {
(SELECT a FROM t2 UNION SELECT COALESCE(b, 55) FROM t2 ORDER BY 1)
} integer 4
# EVIDENCE-OF: R-46899-53765 A SELECT used as a scalar quantity must
# return a result set with a single column.
#
set M {only a single result allowed for a SELECT that is part of an expression}
foreach {tn sql} {
1 { SELECT (SELECT * FROM t2 UNION SELECT a+1, b+1 FROM t2) }
2 { SELECT (SELECT * FROM t2 UNION SELECT a+1, b+1 FROM t2 ORDER BY 1) }
3 { SELECT (SELECT 1, 2) }
4 { SELECT (SELECT NULL, NULL, NULL) }
5 { SELECT (SELECT * FROM t2) }
6 { SELECT (SELECT * FROM (SELECT 1, 2, 3)) }
} {
do_catchsql_test e_expr-35.2.$tn $sql [list 1 $M]
}
finish_test