xref: /sqlite-3.40.0/test/triggerupfrom.test (revision 8210233c) 
1# 2020 July 14
2#
3# The author disclaims copyright to this source code.  In place of
4# a legal notice, here is a blessing:
5#
6#    May you do good and not evil.
7#    May you find forgiveness for yourself and forgive others.
8#    May you share freely, never taking more than you give.
9#
10#***********************************************************************
11#
12
13set testdir [file dirname $argv0]
14source $testdir/tester.tcl
15set testprefix triggerupfrom
16
17do_execsql_test 1.0 {
18  CREATE TABLE map(k, v);
19  INSERT INTO map VALUES(1, 'one'), (2, 'two'), (3, 'three'), (4, 'four');
20
21  CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
22
23  CREATE TRIGGER tr AFTER INSERT ON t1 BEGIN
24    UPDATE t1 SET c = v FROM map WHERE k=new.a AND a=new.a;
25  END;
26}
27
28do_execsql_test 1.1 {
29  INSERT INTO t1(a) VALUES(1);
30}
31
32do_execsql_test 1.2 {
33  SELECT a, c FROM t1 ORDER BY a;
34} {1 one}
35
36do_execsql_test 1.3 {
37  INSERT INTO t1(a) VALUES(2), (3), (4), (5);
38  SELECT a, c FROM t1 ORDER BY a;
39} {1 one 2 two 3 three 4 four 5 {}}
40
41forcedelete test.db2
42do_execsql_test 2.0 {
43  ATTACH 'test.db2' AS aux;
44  CREATE TABLE aux.t3(x, y);
45  INSERT INTO aux.t3 VALUES('x', 'y');
46}
47
48do_catchsql_test 2.1 {
49  CREATE TRIGGER tr2 AFTER INSERT ON t1 BEGIN
50    UPDATE t1 SET b = y FROM aux.t3 WHERE k=new.a;
51  END;
52} {1 {trigger tr2 cannot reference objects in database aux}}
53
54do_execsql_test 2.2 {
55  CREATE TEMP TRIGGER tr2 AFTER INSERT ON t1 BEGIN
56    UPDATE t1 SET b = y FROM aux.t3 WHERE a=new.a;
57  END;
58  INSERT INTO t1(a) VALUES(10), (20);
59  SELECT * FROM t1;
60} {
61  1 {} one
62  2 {} two
63  3 {} three
64  4 {} four
65  5 {} {}
66  10 y {}
67  20 y {}
68}
69
70do_execsql_test 2.3 {
71  CREATE TABLE link(f, t);
72  INSERT INTO link VALUES(5, 2), (20, 10), (2, 1);
73  CREATE TRIGGER tr3 BEFORE DELETE ON t1 BEGIN
74    UPDATE t1 SET b=coalesce(old.b,old.c) FROM main.link WHERE a=t AND old.a=f;
75  END;
76  DELETE FROM t1 WHERE a=2;
77  SELECT * FROM t1;
78} {
79  1 two one
80  3 {} three
81  4 {} four
82  5 {} {}
83  10 y {}
84  20 y {}
85}
86
87db close
88sqlite3 db ""
89do_catchsql_test 2.4 {
90  ATTACH 'test.db' AS yyy;
91  SELECT * FROM t1;
92} {1 {malformed database schema (tr3) - trigger tr3 cannot reference objects in database main}}
93
94#-------------------------------------------------------------------------
95reset_db
96forcedelete test.db2
97do_execsql_test 3.0 {
98  CREATE TABLE mmm(x, y);
99  INSERT INTO mmm VALUES(1, 'one');
100  INSERT INTO mmm VALUES(2, 'two');
101  INSERT INTO mmm VALUES(3, 'three');
102
103  ATTACH 'test.db2' AS aux;
104  CREATE TABLE aux.t1(a, b);
105  CREATE TABLE aux.mmm(x, y);
106  INSERT INTO aux.mmm VALUES(1, 'ONE');
107  INSERT INTO aux.mmm VALUES(2, 'TWO');
108  INSERT INTO aux.mmm VALUES(3, 'THREE');
109
110  CREATE TRIGGER aux.ttt AFTER INSERT ON t1 BEGIN
111    UPDATE t1 SET b=y FROM mmm WHERE x=new.a AND a=new.a;
112  END;
113
114  INSERT INTO t1(a) VALUES (2);
115  SELECT * FROM t1;
116} {2 TWO}
117
118#-------------------------------------------------------------------------
119# Test that INSTEAD OF UPDATE triggers on views work with UPDATE...FROM
120# statements. Including, if the library is built with ENABLE_HIDDEN_COLUMNS,
121# that they work correctly on views with hidden columns.
122#
123reset_db
124do_execsql_test 4.0 {
125  CREATE TABLE t1(k, a, b);
126  INSERT INTO t1 VALUES('a', 1, 'one');
127  INSERT INTO t1 VALUES('b', 2, 'two');
128  INSERT INTO t1 VALUES('c', 3, 'three');
129  INSERT INTO t1 VALUES('d', 4, 'four');
130
131  CREATE TABLE log(x);
132  CREATE VIEW v1 AS SELECT k, a, b AS __hidden__b FROM t1;
133  CREATE TRIGGER tr1 INSTEAD OF UPDATE ON v1 BEGIN
134    INSERT INTO log VALUES(
135      '('||old.a||','||old.__hidden__b||')->('||new.a||','||new.__hidden__b||')'
136    );
137  END;
138}
139
140ifcapable hiddencolumns {
141  do_execsql_test 4.1-hc-enabled {
142    SELECT * FROM v1
143  } {a 1 b 2 c 3 d 4}
144} else {
145  do_execsql_test 4.1-hc-disabled {
146    SELECT * FROM v1
147  } {a 1 one b 2 two c 3 three d 4 four}
148}
149
150do_execsql_test 4.2 {
151  UPDATE v1 SET a='xyz' WHERE k IN ('a', 'c');
152  SELECT * FROM log;
153  DELETE FROM log;
154} {
155  (1,one)->(xyz,one)
156  (3,three)->(xyz,three)
157}
158
159do_execsql_test 4.3 {
160  CREATE TABLE map(k, v);
161  INSERT INTO map VALUES('b', 'twelve');
162  INSERT INTO map VALUES('d', 'fourteen');
163  UPDATE v1 SET a=map.v FROM map WHERE v1.k=map.k;
164  SELECT * FROM log;
165  DELETE FROM log;
166} {
167  (2,two)->(twelve,two)
168  (4,four)->(fourteen,four)
169}
170
171
172
173finish_test
174