database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-07-29 08:01:23 +03:00
Code Activity

Add a few more subquery tests to e_expr.test.

Browse Source 
FossilOrigin-Name: 189cba0072dd0b90e064f889457921aeaeefda01
This commit is contained in:
dan
2010-09-03 10:58:47 +00:00
parent 420398ce09
commit 06ce413680
3 changed files with 50 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
test/e_expr.test
View File

@ -1768,6 +1768,9 @@ do_expr_test e_expr-35.1.6 {
# EVIDENCE-OF: R-46899-53765 A SELECT used as a scalar quantity must
# return a result set with a single column.
#
# The following block tests that errors are returned in a bunch of cases
# where a subquery returns more than one 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) }
@ -1780,5 +1783,44 @@ foreach {tn sql} {
do_catchsql_test e_expr-35.2.$tn $sql [list 1 $M]
}
# EVIDENCE-OF: R-35764-28041 The result of the expression is the value
# of the only column in the first row returned by the SELECT statement.
#
# EVIDENCE-OF: R-41898-06686 If the SELECT yields more than one result
# row, all rows after the first are ignored.
#
do_execsql_test e_expr-36.3.1 {
CREATE TABLE t4(x, y);
INSERT INTO t4 VALUES(1, 'one');
INSERT INTO t4 VALUES(2, 'two');
INSERT INTO t4 VALUES(3, 'three');
} {}
foreach {tn expr restype resval} {
2 { ( SELECT x FROM t4 ORDER BY x ) } integer 1
3 { ( SELECT x FROM t4 ORDER BY y ) } integer 1
4 { ( SELECT x FROM t4 ORDER BY x DESC ) } integer 3
5 { ( SELECT x FROM t4 ORDER BY y DESC ) } integer 2
6 { ( SELECT y FROM t4 ORDER BY y DESC ) } text two
7 { ( SELECT sum(x) FROM t4 ) } integer 6
8 { ( SELECT group_concat(y,'') FROM t4 ) } text onetwothree
9 { ( SELECT max(x) FROM t4 WHERE y LIKE '___') } integer 2
} {
do_expr_test e_expr-36.3.$tn $expr $restype $resval
}
# EVIDENCE-OF: R-25492-41572 If the SELECT yields no rows, then the
# value of the expression is NULL.
#
foreach {tn expr} {
1 { ( SELECT x FROM t4 WHERE x>3 ORDER BY x ) }
2 { ( SELECT x FROM t4 WHERE y<'one' ORDER BY y ) }
} {
do_expr_test e_expr-36.4.$tn $expr null {}
}
finish_test