| # 2020 July 14 |
| # |
| # The author disclaims copyright to this source code. In place of |
| # a legal notice, here is a blessing: |
| # |
| # May you do good and not evil. |
| # May you find forgiveness for yourself and forgive others. |
| # May you share freely, never taking more than you give. |
| # |
| #*********************************************************************** |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| set testprefix triggerupfrom |
| |
| do_execsql_test 1.0 { |
| CREATE TABLE map(k, v); |
| INSERT INTO map VALUES(1, 'one'), (2, 'two'), (3, 'three'), (4, 'four'); |
| |
| CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c); |
| |
| CREATE TRIGGER tr AFTER INSERT ON t1 BEGIN |
| UPDATE t1 SET c = v FROM map WHERE k=new.a AND a=new.a; |
| END; |
| } |
| |
| do_execsql_test 1.1 { |
| INSERT INTO t1(a) VALUES(1); |
| } |
| |
| do_execsql_test 1.2 { |
| SELECT a, c FROM t1 ORDER BY a; |
| } {1 one} |
| |
| do_execsql_test 1.3 { |
| INSERT INTO t1(a) VALUES(2), (3), (4), (5); |
| SELECT a, c FROM t1 ORDER BY a; |
| } {1 one 2 two 3 three 4 four 5 {}} |
| |
| forcedelete test.db2 |
| do_execsql_test 2.0 { |
| ATTACH 'test.db2' AS aux; |
| CREATE TABLE aux.t3(x, y); |
| INSERT INTO aux.t3 VALUES('x', 'y'); |
| } |
| |
| do_catchsql_test 2.1 { |
| CREATE TRIGGER tr2 AFTER INSERT ON t1 BEGIN |
| UPDATE t1 SET b = y FROM aux.t3 WHERE k=new.a; |
| END; |
| } {1 {trigger tr2 cannot reference objects in database aux}} |
| |
| do_execsql_test 2.2 { |
| CREATE TEMP TRIGGER tr2 AFTER INSERT ON t1 BEGIN |
| UPDATE t1 SET b = y FROM aux.t3 WHERE a=new.a; |
| END; |
| INSERT INTO t1(a) VALUES(10), (20); |
| SELECT * FROM t1; |
| } { |
| 1 {} one |
| 2 {} two |
| 3 {} three |
| 4 {} four |
| 5 {} {} |
| 10 y {} |
| 20 y {} |
| } |
| |
| do_execsql_test 2.3 { |
| CREATE TABLE link(f, t); |
| INSERT INTO link VALUES(5, 2), (20, 10), (2, 1); |
| CREATE TRIGGER tr3 BEFORE DELETE ON t1 BEGIN |
| UPDATE t1 SET b=coalesce(old.b,old.c) FROM main.link WHERE a=t AND old.a=f; |
| END; |
| DELETE FROM t1 WHERE a=2; |
| SELECT * FROM t1; |
| } { |
| 1 two one |
| 3 {} three |
| 4 {} four |
| 5 {} {} |
| 10 y {} |
| 20 y {} |
| } |
| |
| db close |
| sqlite3 db "" |
| do_catchsql_test 2.4 { |
| ATTACH 'test.db' AS yyy; |
| SELECT * FROM t1; |
| } {1 {malformed database schema (tr3) - trigger tr3 cannot reference objects in database main}} |
| |
| #------------------------------------------------------------------------- |
| reset_db |
| forcedelete test.db2 |
| do_execsql_test 3.0 { |
| CREATE TABLE mmm(x, y); |
| INSERT INTO mmm VALUES(1, 'one'); |
| INSERT INTO mmm VALUES(2, 'two'); |
| INSERT INTO mmm VALUES(3, 'three'); |
| |
| ATTACH 'test.db2' AS aux; |
| CREATE TABLE aux.t1(a, b); |
| CREATE TABLE aux.mmm(x, y); |
| INSERT INTO aux.mmm VALUES(1, 'ONE'); |
| INSERT INTO aux.mmm VALUES(2, 'TWO'); |
| INSERT INTO aux.mmm VALUES(3, 'THREE'); |
| |
| CREATE TRIGGER aux.ttt AFTER INSERT ON t1 BEGIN |
| UPDATE t1 SET b=y FROM mmm WHERE x=new.a AND a=new.a; |
| END; |
| |
| INSERT INTO t1(a) VALUES (2); |
| SELECT * FROM t1; |
| } {2 TWO} |
| |
| #------------------------------------------------------------------------- |
| # Test that INSTEAD OF UPDATE triggers on views work with UPDATE...FROM |
| # statements. Including, if the library is built with ENABLE_HIDDEN_COLUMNS, |
| # that they work correctly on views with hidden columns. |
| # |
| reset_db |
| do_execsql_test 4.0 { |
| CREATE TABLE t1(k, a, b); |
| INSERT INTO t1 VALUES('a', 1, 'one'); |
| INSERT INTO t1 VALUES('b', 2, 'two'); |
| INSERT INTO t1 VALUES('c', 3, 'three'); |
| INSERT INTO t1 VALUES('d', 4, 'four'); |
| |
| CREATE TABLE log(x); |
| CREATE VIEW v1 AS SELECT k, a, b AS __hidden__b FROM t1; |
| CREATE TRIGGER tr1 INSTEAD OF UPDATE ON v1 BEGIN |
| INSERT INTO log VALUES( |
| '('||old.a||','||old.__hidden__b||')->('||new.a||','||new.__hidden__b||')' |
| ); |
| END; |
| } |
| |
| ifcapable hiddencolumns { |
| do_execsql_test 4.1-hc-enabled { |
| SELECT * FROM v1 |
| } {a 1 b 2 c 3 d 4} |
| } else { |
| do_execsql_test 4.1-hc-disabled { |
| SELECT * FROM v1 |
| } {a 1 one b 2 two c 3 three d 4 four} |
| } |
| |
| do_execsql_test 4.2 { |
| UPDATE v1 SET a='xyz' WHERE k IN ('a', 'c'); |
| SELECT * FROM log; |
| DELETE FROM log; |
| } { |
| (1,one)->(xyz,one) |
| (3,three)->(xyz,three) |
| } |
| |
| do_execsql_test 4.3 { |
| CREATE TABLE map(k, v); |
| INSERT INTO map VALUES('b', 'twelve'); |
| INSERT INTO map VALUES('d', 'fourteen'); |
| UPDATE v1 SET a=map.v FROM map WHERE v1.k=map.k; |
| SELECT * FROM log; |
| DELETE FROM log; |
| } { |
| (2,two)->(twelve,two) |
| (4,four)->(fourteen,four) |
| } |
| |
| |
| |
| finish_test |