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Overview
| Comment: | Add a few more subquery tests to e_expr.test. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
189cba0072dd0b90e064f889457921ae |
| User & Date: | dan 2010-09-03 10:58:47.000 |
Context
|
2010-09-03
| ||
| 12:05 | Improved documentation of the sqlite3_column_count() and sqlite3_data_count() interfaces. (check-in: 0593373d4b user: drh tags: trunk) | |
| 10:58 | Add a few more subquery tests to e_expr.test. (check-in: 189cba0072 user: dan tags: trunk) | |
| 04:29 | Reduce the amount of memory taken up by WAL mmaped regions under Windows. (check-in: f213e133f6 user: shaneh tags: trunk) | |
Changes
Changes to test/e_expr.test.
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} 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 $M]
}
finish_test
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} null {}
do_expr_test e_expr-35.1.6 {
(SELECT a FROM t2 UNION SELECT COALESCE(b, 55) FROM t2 ORDER BY 1)
} integer 4
# EVIDENCE-OF: R-46899-53765 A SELECT used as a scalar quantity must
# return a result set with a single column.
#
# The following block tests that errors are returned in a bunch of cases
# where a subquery returns more than one column.
#
set M {only a single result allowed for a SELECT that is part of an expression}
foreach {tn sql} {
1 { SELECT (SELECT * FROM t2 UNION SELECT a+1, b+1 FROM t2) }
2 { SELECT (SELECT * FROM t2 UNION SELECT a+1, b+1 FROM t2 ORDER BY 1) }
3 { SELECT (SELECT 1, 2) }
4 { SELECT (SELECT NULL, NULL, NULL) }
5 { SELECT (SELECT * FROM t2) }
6 { SELECT (SELECT * FROM (SELECT 1, 2, 3)) }
} {
do_catchsql_test e_expr-35.2.$tn $sql [list 1 $M]
}
# EVIDENCE-OF: R-35764-28041 The result of the expression is the value
# of the only column in the first row returned by the SELECT statement.
#
# EVIDENCE-OF: R-41898-06686 If the SELECT yields more than one result
# row, all rows after the first are ignored.
#
do_execsql_test e_expr-36.3.1 {
CREATE TABLE t4(x, y);
INSERT INTO t4 VALUES(1, 'one');
INSERT INTO t4 VALUES(2, 'two');
INSERT INTO t4 VALUES(3, 'three');
} {}
foreach {tn expr restype resval} {
2 { ( SELECT x FROM t4 ORDER BY x ) } integer 1
3 { ( SELECT x FROM t4 ORDER BY y ) } integer 1
4 { ( SELECT x FROM t4 ORDER BY x DESC ) } integer 3
5 { ( SELECT x FROM t4 ORDER BY y DESC ) } integer 2
6 { ( SELECT y FROM t4 ORDER BY y DESC ) } text two
7 { ( SELECT sum(x) FROM t4 ) } integer 6
8 { ( SELECT group_concat(y,'') FROM t4 ) } text onetwothree
9 { ( SELECT max(x) FROM t4 WHERE y LIKE '___') } integer 2
} {
do_expr_test e_expr-36.3.$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
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