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third_party/sqlite/src/test/trigger2.test

Index: third_party/sqlite/src/test/trigger2.test
diff --git a/third_party/sqlite/src/test/trigger2.test b/third_party/sqlite/src/test/trigger2.test
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+# 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.
+#
+#***********************************************************************
+#
+# Regression testing of FOR EACH ROW table triggers
+#
+# 1. Trigger execution order tests. 
+# These tests ensure that BEFORE and AFTER triggers are fired at the correct
+# times relative to each other and the triggering statement. 
+#
+# trigger2-1.1.*: ON UPDATE trigger execution model.
+# trigger2-1.2.*: DELETE trigger execution model.
+# trigger2-1.3.*: INSERT trigger execution model.
+#
+# 2. Trigger program execution tests.
+# These tests ensure that trigger programs execute correctly (ie. that a
+# trigger program can correctly execute INSERT, UPDATE, DELETE * SELECT
+# statements, and combinations thereof).
+#
+# 3. Selective trigger execution 
+# This tests that conditional triggers (ie. UPDATE OF triggers and triggers
+# with WHEN clauses) are fired only fired when they are supposed to be.
+#
+# trigger2-3.1: UPDATE OF triggers
+# trigger2-3.2: WHEN clause
+#
+# 4. Cascaded trigger execution 
+# Tests that trigger-programs may cause other triggers to fire. Also that a 
+# trigger-program is never executed recursively.
+# 
+# trigger2-4.1: Trivial cascading trigger
+# trigger2-4.2: Trivial recursive trigger handling 
+#
+# 5. Count changes behaviour.
+# Verify that rows altered by triggers are not included in the return value
+# of the "count changes" interface.
+#
+# 6. ON CONFLICT clause handling
+# trigger2-6.1[a-f]: INSERT statements
+# trigger2-6.2[a-f]: UPDATE statements
+#
+# 7. & 8. Triggers on views fire correctly.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+ifcapable {!trigger} {
+  finish_test
+  return
+}
+
+# The tests in this file were written before SQLite supported recursive
+# trigger invocation, and some tests depend on that to pass. So disable
+# recursive triggers for this file.
+catchsql { pragma recursive_triggers = off } 
+
+# 1.
+ifcapable subquery {
+  set ii 0
+  set tbl_definitions [list \
+  	{CREATE TABLE tbl (a, b);}                                      \
+  	{CREATE TABLE tbl (a INTEGER PRIMARY KEY, b);}                  \
+        {CREATE TABLE tbl (a, b PRIMARY KEY);}                          \
+  	{CREATE TABLE tbl (a, b); CREATE INDEX tbl_idx ON tbl(b);}      \
+  ]
+  ifcapable tempdb {
+    lappend tbl_definitions \
+        {CREATE TEMP TABLE tbl (a, b); CREATE INDEX tbl_idx ON tbl(b);} 
+    lappend tbl_definitions {CREATE TEMP TABLE tbl (a, b);}
+    lappend tbl_definitions \
+        {CREATE TEMPORARY TABLE tbl (a INTEGER PRIMARY KEY, b);}
+  }
+  foreach tbl_defn $tbl_definitions {
+    incr ii
+    catchsql { DROP INDEX tbl_idx; }
+    catchsql {
+      DROP TABLE rlog;
+      DROP TABLE clog;
+      DROP TABLE tbl;
+      DROP TABLE other_tbl;
+    }
+  
+    execsql $tbl_defn
+  
+    execsql {
+      INSERT INTO tbl VALUES(1, 2);
+      INSERT INTO tbl VALUES(3, 4);
+  
+      CREATE TABLE rlog (idx, old_a, old_b, db_sum_a, db_sum_b, new_a, new_b);
+      CREATE TABLE clog (idx, old_a, old_b, db_sum_a, db_sum_b, new_a, new_b);
+  
+      CREATE TRIGGER before_update_row BEFORE UPDATE ON tbl FOR EACH ROW 
+        BEGIN
+        INSERT INTO rlog VALUES ( (SELECT coalesce(max(idx),0) + 1 FROM rlog), 
+  	  old.a, old.b, 
+  	  (SELECT coalesce(sum(a),0) FROM tbl),
+          (SELECT coalesce(sum(b),0) FROM tbl), 
+  	  new.a, new.b);
+      END;
+  
+      CREATE TRIGGER after_update_row AFTER UPDATE ON tbl FOR EACH ROW 
+        BEGIN
+        INSERT INTO rlog VALUES ( (SELECT coalesce(max(idx),0) + 1 FROM rlog), 
+  	  old.a, old.b, 
+  	  (SELECT coalesce(sum(a),0) FROM tbl),
+          (SELECT coalesce(sum(b),0) FROM tbl), 
+  	  new.a, new.b);
+      END;
+  
+      CREATE TRIGGER conditional_update_row AFTER UPDATE ON tbl FOR EACH ROW
+        WHEN old.a = 1
+        BEGIN
+        INSERT INTO clog VALUES ( (SELECT coalesce(max(idx),0) + 1 FROM clog), 
+  	  old.a, old.b, 
+  	  (SELECT coalesce(sum(a),0) FROM tbl),
+          (SELECT coalesce(sum(b),0) FROM tbl), 
+  	  new.a, new.b);
+      END;
+    }
+  
+    do_test trigger2-1.$ii.1 {
+      set r {}
+      foreach v [execsql { 
+        UPDATE tbl SET a = a * 10, b = b * 10;
+        SELECT * FROM rlog ORDER BY idx;
+        SELECT * FROM clog ORDER BY idx;
+      }] {
+        lappend r [expr {int($v)}]
+      }
+      set r
+    } [list 1 1 2  4  6 10 20 \
+            2 1 2 13 24 10 20 \
+  	    3 3 4 13 24 30 40 \
+  	    4 3 4 40 60 30 40 \
+            1 1 2 13 24 10 20 ]
+  
+    execsql {
+      DELETE FROM rlog;
+      DELETE FROM tbl;
+      INSERT INTO tbl VALUES (100, 100);
+      INSERT INTO tbl VALUES (300, 200);
+      CREATE TRIGGER delete_before_row BEFORE DELETE ON tbl FOR EACH ROW
+        BEGIN
+        INSERT INTO rlog VALUES ( (SELECT coalesce(max(idx),0) + 1 FROM rlog), 
+  	  old.a, old.b, 
+  	  (SELECT coalesce(sum(a),0) FROM tbl),
+          (SELECT coalesce(sum(b),0) FROM tbl), 
+  	  0, 0);
+      END;
+  
+      CREATE TRIGGER delete_after_row AFTER DELETE ON tbl FOR EACH ROW
+        BEGIN
+        INSERT INTO rlog VALUES ( (SELECT coalesce(max(idx),0) + 1 FROM rlog), 
+  	  old.a, old.b, 
+  	  (SELECT coalesce(sum(a),0) FROM tbl),
+          (SELECT coalesce(sum(b),0) FROM tbl), 
+  	  0, 0);
+      END;
+    }
+    do_test trigger2-1.$ii.2 {
+      set r {}
+      foreach v [execsql {
+        DELETE FROM tbl;
+        SELECT * FROM rlog;
+      }] {
+        lappend r [expr {int($v)}]
+      }
+      set r
+    } [list 1 100 100 400 300 0 0 \
+            2 100 100 300 200 0 0 \
+            3 300 200 300 200 0 0 \
+            4 300 200 0 0 0 0 ]
+  
+    execsql {
+      DELETE FROM rlog;
+      CREATE TRIGGER insert_before_row BEFORE INSERT ON tbl FOR EACH ROW
+        BEGIN
+        INSERT INTO rlog VALUES ( (SELECT coalesce(max(idx),0) + 1 FROM rlog), 
+  	  0, 0,
+  	  (SELECT coalesce(sum(a),0) FROM tbl),
+          (SELECT coalesce(sum(b),0) FROM tbl), 
+  	  new.a, new.b);
+      END;
+  
+      CREATE TRIGGER insert_after_row AFTER INSERT ON tbl FOR EACH ROW
+        BEGIN
+        INSERT INTO rlog VALUES ( (SELECT coalesce(max(idx),0) + 1 FROM rlog), 
+  	  0, 0,
+  	  (SELECT coalesce(sum(a),0) FROM tbl),
+          (SELECT coalesce(sum(b),0) FROM tbl), 
+  	  new.a, new.b);
+      END;
+    }
+    do_test trigger2-1.$ii.3 {
+      execsql {
+  
+        CREATE TABLE other_tbl(a, b);
+        INSERT INTO other_tbl VALUES(1, 2);
+        INSERT INTO other_tbl VALUES(3, 4);
+        -- INSERT INTO tbl SELECT * FROM other_tbl;
+        INSERT INTO tbl VALUES(5, 6);
+        DROP TABLE other_tbl;
+  
+        SELECT * FROM rlog;
+      }
+    } [list 1 0 0 0 0 5 6 \
+            2 0 0 5 6 5 6 ]
+  
+    integrity_check trigger2-1.$ii.4
+  }
+  catchsql {
+    DROP TABLE rlog;
+    DROP TABLE clog;
+    DROP TABLE tbl;
+    DROP TABLE other_tbl;
+  }
+}
+
+# 2.
+set ii 0
+foreach tr_program {
+  {UPDATE tbl SET b = old.b;}
+  {INSERT INTO log VALUES(new.c, 2, 3);}
+  {DELETE FROM log WHERE a = 1;}
+  {INSERT INTO tbl VALUES(500, new.b * 10, 700); 
+    UPDATE tbl SET c = old.c; 
+    DELETE FROM log;}
+  {INSERT INTO log select * from tbl;} 
+} {
+  foreach test_varset [ list \
+    {
+      set statement {UPDATE tbl SET c = 10 WHERE a = 1;} 
+      set prep      {INSERT INTO tbl VALUES(1, 2, 3);}
+      set newC 10
+      set newB 2
+      set newA 1
+      set oldA 1
+      set oldB 2
+      set oldC 3
+    } \
+    {
+      set statement {DELETE FROM tbl WHERE a = 1;}
+      set prep      {INSERT INTO tbl VALUES(1, 2, 3);}
+      set oldA 1
+      set oldB 2
+      set oldC 3
+    } \
+    {
+      set statement {INSERT INTO tbl VALUES(1, 2, 3);}
+      set newA 1
+      set newB 2
+      set newC 3
+    }
+  ] \
+  {
+    set statement {}
+    set prep {}
+    set newA {''}
+    set newB {''}
+    set newC {''}
+    set oldA {''}
+    set oldB {''}
+    set oldC {''}
+
+    incr ii
+
+    eval $test_varset
+
+    set statement_type [string range $statement 0 5]
+    set tr_program_fixed $tr_program
+    if {$statement_type == "DELETE"} {
+      regsub -all new\.a $tr_program_fixed {''} tr_program_fixed 
+      regsub -all new\.b $tr_program_fixed {''} tr_program_fixed 
+      regsub -all new\.c $tr_program_fixed {''} tr_program_fixed 
+    }
+    if {$statement_type == "INSERT"} {
+      regsub -all old\.a $tr_program_fixed {''} tr_program_fixed 
+      regsub -all old\.b $tr_program_fixed {''} tr_program_fixed 
+      regsub -all old\.c $tr_program_fixed {''} tr_program_fixed 
+    }
+
+
+    set tr_program_cooked $tr_program
+    regsub -all new\.a $tr_program_cooked $newA tr_program_cooked 
+    regsub -all new\.b $tr_program_cooked $newB tr_program_cooked 
+    regsub -all new\.c $tr_program_cooked $newC tr_program_cooked 
+    regsub -all old\.a $tr_program_cooked $oldA tr_program_cooked 
+    regsub -all old\.b $tr_program_cooked $oldB tr_program_cooked 
+    regsub -all old\.c $tr_program_cooked $oldC tr_program_cooked 
+
+    catchsql {
+      DROP TABLE tbl;
+      DROP TABLE log;
+    }
+
+    execsql {
+      CREATE TABLE tbl(a PRIMARY KEY, b, c);
+      CREATE TABLE log(a, b, c);
+    }
+
+    set query {SELECT * FROM tbl; SELECT * FROM log;}
+    set prep "$prep; INSERT INTO log VALUES(1, 2, 3);\
+             INSERT INTO log VALUES(10, 20, 30);"
+
+# Check execution of BEFORE programs:
+
+    set before_data [ execsql "$prep $tr_program_cooked $statement $query" ]
+
+    execsql "DELETE FROM tbl; DELETE FROM log; $prep";
+    execsql "CREATE TRIGGER the_trigger BEFORE [string range $statement 0 6]\
+             ON tbl BEGIN $tr_program_fixed END;"
+
+    do_test trigger2-2.$ii-before "execsql {$statement $query}" $before_data
+
+    execsql "DROP TRIGGER the_trigger;"
+    execsql "DELETE FROM tbl; DELETE FROM log;"
+
+# Check execution of AFTER programs
+    set after_data [ execsql "$prep $statement $tr_program_cooked $query" ]
+
+    execsql "DELETE FROM tbl; DELETE FROM log; $prep";
+    execsql "CREATE TRIGGER the_trigger AFTER [string range $statement 0 6]\
+             ON tbl BEGIN $tr_program_fixed END;"
+
+    do_test trigger2-2.$ii-after "execsql {$statement $query}" $after_data
+    execsql "DROP TRIGGER the_trigger;"
+
+    integrity_check trigger2-2.$ii-integrity
+  }
+}
+catchsql {
+  DROP TABLE tbl;
+  DROP TABLE log;
+}
+
+# 3.
+
+# trigger2-3.1: UPDATE OF triggers
+execsql {
+  CREATE TABLE tbl (a, b, c, d);
+  CREATE TABLE log (a);
+  INSERT INTO log VALUES (0);
+  INSERT INTO tbl VALUES (0, 0, 0, 0);
+  INSERT INTO tbl VALUES (1, 0, 0, 0);
+  CREATE TRIGGER tbl_after_update_cd BEFORE UPDATE OF c, d ON tbl
+    BEGIN
+      UPDATE log SET a = a + 1;
+    END;
+}
+do_test trigger2-3.1 {
+  execsql {
+    UPDATE tbl SET b = 1, c = 10; -- 2
+    UPDATE tbl SET b = 10; -- 0
+    UPDATE tbl SET d = 4 WHERE a = 0; --1
+    UPDATE tbl SET a = 4, b = 10; --0
+    SELECT * FROM log;
+  }
+} {3}
+execsql {
+  DROP TABLE tbl;
+  DROP TABLE log;
+}
+
+# trigger2-3.2: WHEN clause
+set when_triggers [list {t1 BEFORE INSERT ON tbl WHEN new.a > 20}]
+ifcapable subquery {
+  lappend when_triggers \
+      {t2 BEFORE INSERT ON tbl WHEN (SELECT count(*) FROM tbl) = 0}
+}
+
+execsql {
+  CREATE TABLE tbl (a, b, c, d);
+  CREATE TABLE log (a);
+  INSERT INTO log VALUES (0);
+}
+
+foreach trig $when_triggers {
+  execsql "CREATE TRIGGER $trig BEGIN UPDATE log set a = a + 1; END;"
+}
+
+ifcapable subquery {
+  set t232 {1 0 1}
+} else {
+  set t232 {0 0 1}
+}
+do_test trigger2-3.2 {
+  execsql { 
+
+    INSERT INTO tbl VALUES(0, 0, 0, 0);     -- 1 (ifcapable subquery)
+    SELECT * FROM log;
+    UPDATE log SET a = 0;
+
+    INSERT INTO tbl VALUES(0, 0, 0, 0);     -- 0
+    SELECT * FROM log;
+    UPDATE log SET a = 0;
+
+    INSERT INTO tbl VALUES(200, 0, 0, 0);     -- 1
+    SELECT * FROM log;
+    UPDATE log SET a = 0;
+  }
+} $t232
+execsql {
+  DROP TABLE tbl;
+  DROP TABLE log;
+}
+integrity_check trigger2-3.3
+
+# Simple cascaded trigger
+execsql {
+  CREATE TABLE tblA(a, b);
+  CREATE TABLE tblB(a, b);
+  CREATE TABLE tblC(a, b);
+
+  CREATE TRIGGER tr1 BEFORE INSERT ON tblA BEGIN
+    INSERT INTO tblB values(new.a, new.b);
+  END;
+
+  CREATE TRIGGER tr2 BEFORE INSERT ON tblB BEGIN
+    INSERT INTO tblC values(new.a, new.b);
+  END;
+}
+do_test trigger2-4.1 {
+  execsql {
+    INSERT INTO tblA values(1, 2);
+    SELECT * FROM tblA;
+    SELECT * FROM tblB;
+    SELECT * FROM tblC;
+  }
+} {1 2 1 2 1 2}
+execsql {
+  DROP TABLE tblA;
+  DROP TABLE tblB;
+  DROP TABLE tblC;
+}
+
+# Simple recursive trigger
+execsql {
+  CREATE TABLE tbl(a, b, c);
+  CREATE TRIGGER tbl_trig BEFORE INSERT ON tbl 
+    BEGIN
+      INSERT INTO tbl VALUES (new.a, new.b, new.c);
+    END;
+}
+do_test trigger2-4.2 {
+  execsql {
+    INSERT INTO tbl VALUES (1, 2, 3);
+    select * from tbl;
+  }
+} {1 2 3 1 2 3}
+execsql {
+  DROP TABLE tbl;
+}
+
+# 5.
+execsql {
+  CREATE TABLE tbl(a, b, c);
+  CREATE TRIGGER tbl_trig BEFORE INSERT ON tbl 
+    BEGIN
+      INSERT INTO tbl VALUES (1, 2, 3);
+      INSERT INTO tbl VALUES (2, 2, 3);
+      UPDATE tbl set b = 10 WHERE a = 1;
+      DELETE FROM tbl WHERE a = 1;
+      DELETE FROM tbl;
+    END;
+}
+do_test trigger2-5 {
+  execsql {
+    INSERT INTO tbl VALUES(100, 200, 300);
+  }
+  db changes
+} {1}
+execsql {
+  DROP TABLE tbl;
+}
+
+ifcapable conflict {
+  # Handling of ON CONFLICT by INSERT statements inside triggers
+  execsql {
+    CREATE TABLE tbl (a primary key, b, c);
+    CREATE TRIGGER ai_tbl AFTER INSERT ON tbl BEGIN
+      INSERT OR IGNORE INTO tbl values (new.a, 0, 0);
+    END;
+  }
+  do_test trigger2-6.1a {
+    execsql {
+      BEGIN;
+      INSERT INTO tbl values (1, 2, 3);
+      SELECT * from tbl;
+    }
+  } {1 2 3}
+  do_test trigger2-6.1b {
+    catchsql {
+      INSERT OR ABORT INTO tbl values (2, 2, 3);
+    }
+  } {1 {column a is not unique}}
+  do_test trigger2-6.1c {
+    execsql {
+      SELECT * from tbl;
+    }
+  } {1 2 3}
+  do_test trigger2-6.1d {
+    catchsql {
+      INSERT OR FAIL INTO tbl values (2, 2, 3);
+    }
+  } {1 {column a is not unique}}
+  do_test trigger2-6.1e {
+    execsql {
+      SELECT * from tbl;
+    }
+  } {1 2 3 2 2 3}
+  do_test trigger2-6.1f {
+    execsql {
+      INSERT OR REPLACE INTO tbl values (2, 2, 3);
+      SELECT * from tbl;
+    }
+  } {1 2 3 2 0 0}
+  do_test trigger2-6.1g {
+    catchsql {
+      INSERT OR ROLLBACK INTO tbl values (3, 2, 3);
+    }
+  } {1 {column a is not unique}}
+  do_test trigger2-6.1h {
+    execsql {
+      SELECT * from tbl;
+    }
+  } {}
+  execsql {DELETE FROM tbl}
+  
+  
+  # Handling of ON CONFLICT by UPDATE statements inside triggers
+  execsql {
+    INSERT INTO tbl values (4, 2, 3);
+    INSERT INTO tbl values (6, 3, 4);
+    CREATE TRIGGER au_tbl AFTER UPDATE ON tbl BEGIN
+      UPDATE OR IGNORE tbl SET a = new.a, c = 10;
+    END;
+  }
+  do_test trigger2-6.2a {
+    execsql {
+      BEGIN;
+      UPDATE tbl SET a = 1 WHERE a = 4;
+      SELECT * from tbl;
+    }
+  } {1 2 10 6 3 4}
+  do_test trigger2-6.2b {
+    catchsql {
+      UPDATE OR ABORT tbl SET a = 4 WHERE a = 1;
+    }
+  } {1 {column a is not unique}}
+  do_test trigger2-6.2c {
+    execsql {
+      SELECT * from tbl;
+    }
+  } {1 2 10 6 3 4}
+  do_test trigger2-6.2d {
+    catchsql {
+      UPDATE OR FAIL tbl SET a = 4 WHERE a = 1;
+    }
+  } {1 {column a is not unique}}
+  do_test trigger2-6.2e {
+    execsql {
+      SELECT * from tbl;
+    }
+  } {4 2 10 6 3 4}
+  do_test trigger2-6.2f.1 {
+    execsql {
+      UPDATE OR REPLACE tbl SET a = 1 WHERE a = 4;
+      SELECT * from tbl;
+    }
+  } {1 3 10}
+  do_test trigger2-6.2f.2 {
+    execsql {
+      INSERT INTO tbl VALUES (2, 3, 4);
+      SELECT * FROM tbl;
+    }
+  } {1 3 10 2 3 4}
+  do_test trigger2-6.2g {
+    catchsql {
+      UPDATE OR ROLLBACK tbl SET a = 4 WHERE a = 1;
+    }
+  } {1 {column a is not unique}}
+  do_test trigger2-6.2h {
+    execsql {
+      SELECT * from tbl;
+    }
+  } {4 2 3 6 3 4}
+  execsql {
+    DROP TABLE tbl;
+  }
+} ; # ifcapable conflict
+
+# 7. Triggers on views
+ifcapable view {
+
+do_test trigger2-7.1 {
+  execsql {
+  CREATE TABLE ab(a, b);
+  CREATE TABLE cd(c, d);
+  INSERT INTO ab VALUES (1, 2);
+  INSERT INTO ab VALUES (0, 0);
+  INSERT INTO cd VALUES (3, 4);
+
+  CREATE TABLE tlog(ii INTEGER PRIMARY KEY, 
+      olda, oldb, oldc, oldd, newa, newb, newc, newd);
+
+  CREATE VIEW abcd AS SELECT a, b, c, d FROM ab, cd;
+
+  CREATE TRIGGER before_update INSTEAD OF UPDATE ON abcd BEGIN
+    INSERT INTO tlog VALUES(NULL, 
+	old.a, old.b, old.c, old.d, new.a, new.b, new.c, new.d);
+  END;
+  CREATE TRIGGER after_update INSTEAD OF UPDATE ON abcd BEGIN
+    INSERT INTO tlog VALUES(NULL, 
+	old.a, old.b, old.c, old.d, new.a, new.b, new.c, new.d);
+  END;
+
+  CREATE TRIGGER before_delete INSTEAD OF DELETE ON abcd BEGIN
+    INSERT INTO tlog VALUES(NULL, 
+	old.a, old.b, old.c, old.d, 0, 0, 0, 0);
+  END;
+  CREATE TRIGGER after_delete INSTEAD OF DELETE ON abcd BEGIN
+    INSERT INTO tlog VALUES(NULL, 
+	old.a, old.b, old.c, old.d, 0, 0, 0, 0);
+  END;
+
+  CREATE TRIGGER before_insert INSTEAD OF INSERT ON abcd BEGIN
+    INSERT INTO tlog VALUES(NULL, 
+	0, 0, 0, 0, new.a, new.b, new.c, new.d);
+  END;
+   CREATE TRIGGER after_insert INSTEAD OF INSERT ON abcd BEGIN
+    INSERT INTO tlog VALUES(NULL, 
+	0, 0, 0, 0, new.a, new.b, new.c, new.d);
+   END;
+  }
+} {};
+
+do_test trigger2-7.2 {
+  execsql {
+    UPDATE abcd SET a = 100, b = 5*5 WHERE a = 1;
+    DELETE FROM abcd WHERE a = 1;
+    INSERT INTO abcd VALUES(10, 20, 30, 40);
+    SELECT * FROM tlog;
+  }
+} [ list 1 1 2 3 4 100 25 3 4 \
+         2 1 2 3 4 100 25 3 4 \
+	 3 1 2 3 4 0 0 0 0 \
+	 4 1 2 3 4 0 0 0 0 \
+	 5 0 0 0 0 10 20 30 40 \
+	 6 0 0 0 0 10 20 30 40 ]
+
+do_test trigger2-7.3 {
+  execsql {
+    DELETE FROM tlog;
+    INSERT INTO abcd VALUES(10, 20, 30, 40);
+    UPDATE abcd SET a = 100, b = 5*5 WHERE a = 1;
+    DELETE FROM abcd WHERE a = 1;
+    SELECT * FROM tlog;
+  }
+} [ list \
+   1 0 0 0 0 10 20 30 40 \
+   2 0 0 0 0 10 20 30 40 \
+   3 1 2 3 4 100 25 3 4 \
+   4 1 2 3 4 100 25 3 4 \
+   5 1 2 3 4 0 0 0 0 \
+   6 1 2 3 4 0 0 0 0 \
+]
+do_test trigger2-7.4 {
+  execsql {
+    DELETE FROM tlog;
+    DELETE FROM abcd WHERE a = 1;
+    INSERT INTO abcd VALUES(10, 20, 30, 40);
+    UPDATE abcd SET a = 100, b = 5*5 WHERE a = 1;
+    SELECT * FROM tlog;
+  }
+} [ list \
+   1 1 2 3 4 0 0 0 0 \
+   2 1 2 3 4 0 0 0 0 \
+   3 0 0 0 0 10 20 30 40 \
+   4 0 0 0 0 10 20 30 40 \
+   5 1 2 3 4 100 25 3 4 \
+   6 1 2 3 4 100 25 3 4 \
+]
+
+do_test trigger2-8.1 {
+  execsql {
+    CREATE TABLE t1(a,b,c);
+    INSERT INTO t1 VALUES(1,2,3);
+    CREATE VIEW v1 AS
+      SELECT a+b AS x, b+c AS y, a+c AS z FROM t1;
+    SELECT * FROM v1;
+  }
+} {3 5 4}
+do_test trigger2-8.2 {
+  execsql {
+    CREATE TABLE v1log(a,b,c,d,e,f);
+    CREATE TRIGGER r1 INSTEAD OF DELETE ON v1 BEGIN
+      INSERT INTO v1log VALUES(OLD.x,NULL,OLD.y,NULL,OLD.z,NULL);
+    END;
+    DELETE FROM v1 WHERE x=1;
+    SELECT * FROM v1log;
+  }
+} {}
+do_test trigger2-8.3 {
+  execsql {
+    DELETE FROM v1 WHERE x=3;
+    SELECT * FROM v1log;
+  }
+} {3 {} 5 {} 4 {}}
+do_test trigger2-8.4 {
+  execsql {
+    INSERT INTO t1 VALUES(4,5,6);
+    DELETE FROM v1log;
+    DELETE FROM v1 WHERE y=11;
+    SELECT * FROM v1log;
+  }
+} {9 {} 11 {} 10 {}}
+do_test trigger2-8.5 {
+  execsql {
+    CREATE TRIGGER r2 INSTEAD OF INSERT ON v1 BEGIN
+      INSERT INTO v1log VALUES(NULL,NEW.x,NULL,NEW.y,NULL,NEW.z);
+    END;
+    DELETE FROM v1log;
+    INSERT INTO v1 VALUES(1,2,3);
+    SELECT * FROM v1log;
+  }
+} {{} 1 {} 2 {} 3}
+do_test trigger2-8.6 {
+  execsql {
+    CREATE TRIGGER r3 INSTEAD OF UPDATE ON v1 BEGIN
+      INSERT INTO v1log VALUES(OLD.x,NEW.x,OLD.y,NEW.y,OLD.z,NEW.z);
+    END;
+    DELETE FROM v1log;
+    UPDATE v1 SET x=x+100, y=y+200, z=z+300;
+    SELECT * FROM v1log;
+  }
+} {3 103 5 205 4 304 9 109 11 211 10 310}
+
+# At one point the following was causing a segfault.
+do_test trigger2-9.1 {
+  execsql {
+    CREATE TABLE t3(a TEXT, b TEXT);
+    CREATE VIEW v3 AS SELECT t3.a FROM t3;
+    CREATE TRIGGER trig1 INSTEAD OF DELETE ON v3 BEGIN
+      SELECT 1;
+    END;
+    DELETE FROM v3 WHERE a = 1;
+  }
+} {}
+
+} ;# ifcapable view
+
+integrity_check trigger2-9.9
+
+finish_test