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265 lines (151 loc) · 4.2 KB
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# Copyright Materialize, Inc. and contributors. All rights reserved.
#
# Use of this software is governed by the Business Source License
# included in the LICENSE file at the root of this repository.
#
# As of the Change Date specified in that file, in accordance with
# the Business Source License, use of this software will be governed
# by the Apache License, Version 2.0.
# Additional test cases for DELETE ... USING, beyond those in update.td
> CREATE TABLE t1 (f1 INTEGER);
> CREATE TABLE t2 (f1 INTEGER);
> CREATE TABLE t3 (f1 INTEGER);
! DELETE FROM t1 USING t1;
contains:table name "t1" specified more than once
# Ambiguous column name
! DELETE FROM t1 USING t2 WHERE f1 = 1;
contains:column reference "f1" is ambiguous
#
# Self-join
#
> INSERT INTO t1 VALUES (1), (10), (100);
> DELETE FROM t1 AS a1 USING t1 AS a2;
> SELECT COUNT(*) from t1;
0
# Impossible join condition
> INSERT INTO t1 VALUES (1), (10), (100);
> INSERT INTO t2 VALUES (1), (10), (100);
> DELETE FROM t1 USING t2 WHERE FALSE;
> SELECT COUNT(*) FROM t1;
3
> DELETE FROM t1;
> DELETE FROM t2;
# Null handling
> INSERT INTO t1 VALUES (1), (NULL);
> INSERT INTO t2 VALUES (1), (NULL);
> DELETE FROM t1 USING t2 WHERE t1.f1 = t2.f1;
> SELECT * FROM t1;
<null>
> DELETE FROM t1;
> DELETE FROM t2;
# Non-equality join condition
> INSERT INTO t1 VALUES (1), (2), (3);
> INSERT INTO t2 VALUES (1);
> DELETE FROM t1 USING t2 WHERE t1.f1 > t2.f1;
> SELECT * FROM t1;
1
> DELETE FROM t1;
> DELETE FROM t2;
> INSERT INTO t1 VALUES (1), (2), (3);
> INSERT INTO t2 VALUES (1);
> DELETE FROM t1 USING t2 WHERE t1.f1 IN (t2.f1, t2.f1 + 1);
> SELECT * FROM t1;
3
> DELETE FROM t1;
> DELETE FROM t2;
# Join condition OR-ed to a predicate
> INSERT INTO t1 VALUES (1), (10), (100);
> INSERT INTO t2 VALUES (1);
> DELETE FROM t1 USING t2 WHERE t1.f1 = t2.f1 OR t1.f1 = 100;
> SELECT * FROM t1;
10
> DELETE FROM t1;
> DELETE FROM t2;
# Join condition AND-ed to a predicate
> INSERT INTO t1 VALUES (1),(10),(100);
> INSERT INTO t2 VALUES (1),(10);
> DELETE FROM t1 USING t2 WHERE t1.f1 = t2.f1 AND t1.f1 = 10;
> SELECT * FROM t1;
1
100
> DELETE FROM t1;
> DELETE FROM t2;
# Join with an empty table does not delete anything
> INSERT INTO t1 VALUES (1),(10),(100);
> DELETE FROM t1 USING t2 WHERE t1.f1 = t2.f1 OR t1.f1 = 10;
> SELECT COUNT(*) FROM t1;
3
> DELETE FROM t1;
# Multi-table join
> INSERT INTO t1 VALUES (1),(10),(100);
> INSERT INTO t2 VALUES (1), (10);
> INSERT INTO t3 VALUES (1);
> DELETE FROM t1 USING t2, t3 WHERE t1.f1 = t2.f1 AND t1.f1 = t3.f1;
> SELECT * FROM t1;
10
100
> DELETE FROM t1;
> DELETE FROM t2;
> DELETE FROM t3;
# Empty join condition
> INSERT INTO t1 VALUES (1),(10),(100);
> INSERT INTO t2 VALUES (1000);
> DELETE FROM t1 USING t2;
> SELECT COUNT(*) FROM t1;
0
> DELETE FROM t1;
> DELETE FROM t2;
# JOIN ... USING ()
> INSERT INTO t1 VALUES (1),(10),(100);
> INSERT INTO t2 VALUES (100);
> INSERT INTO t3 VALUES (100);
> DELETE FROM t1 USING t2 JOIN t3 USING (f1) WHERE t1.f1 = t2.f1;
> SELECT * FROM t1;
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10
> DELETE FROM t1;
> DELETE FROM t2;
> DELETE FROM t3;
# Outer joins
> INSERT INTO t1 VALUES (1), (2), (3), (NULL);
> INSERT INTO t2 VALUES (1), (2);
> INSERT INTO t3 VALUES (1), (3);
> DELETE FROM t1 USING t2 LEFT JOIN t3 ON (t2.f1 = t3.f1) WHERE t1.f1 = t2.f1;
> SELECT * FROM t1;
3
<null>
> DELETE FROM t1;
> DELETE FROM t2;
> DELETE FROM t3;
> INSERT INTO t1 VALUES (1), (2), (3), (NULL);
> INSERT INTO t2 VALUES (1), (2);
> INSERT INTO t3 VALUES (1), (3);
> DELETE FROM t1 USING t2 LEFT JOIN t3 ON (FALSE) WHERE t1.f1 = t2.f1;
> SELECT * FROM t1;
3
<null>
> DELETE FROM t1;
> DELETE FROM t2;
> DELETE FROM t3;
# Derived table
> INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
> INSERT INTO t2 VALUES (2), (2), (3), (3), (3);
> DELETE FROM t1 USING (SELECT f1 FROM t2 GROUP BY f1) AS a2 WHERE t1.f1 = a2.f1;
> SELECT * FROM t1;
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> DELETE FROM t1;
> DELETE FROM t2;
# Union
> INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
> INSERT INTO t2 VALUES (2), (2);
> INSERT INTO t3 VALUES (3), (3), (3);
> DELETE FROM t1 USING (SELECT f1 FROM t2 UNION ALL SELECT f1 FROM t3) AS a2 WHERE t1.f1 = a2.f1;
> SELECT * FROM t1;
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> DELETE FROM t1;
> DELETE FROM t2;
> DELETE FROM t3;