Fixed behaviour of last_insert_rowid() with triggers and add last_statement_change_count() function that works correctly with triggers. (CVS 1252)
FossilOrigin-Name: 6734c923395ca41ce453f56dd7d6e7794fbb3bb5
This commit is contained in:
rdc
@@ -0,0 +1,244 @@
|
||||
# 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.
|
||||
#
|
||||
#***********************************************************************
|
||||
#
|
||||
# Tests to make sure that value returned by last_statement_change_count()
|
||||
# (LSCC) is updated properly, especially inside triggers
|
||||
#
|
||||
# Note 1: LSCC remains constant within a statement and only updates once
|
||||
# the statement is finished (triggers count as part of statement)
|
||||
# Note 2: LSCC is changed within the context of a trigger
|
||||
# much like last_insert_rowid() (see lastinsert.test),
|
||||
# but is restored once the trigger exits
|
||||
# Note 3: LSCC is not changed by a change to a view (since everything
|
||||
# is done within instead of trigger context)
|
||||
#
|
||||
|
||||
set testdir [file dirname $argv0]
|
||||
source $testdir/tester.tcl
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
# 1.x - basic tests (no triggers)
|
||||
|
||||
# LSCC set properly after insert
|
||||
do_test laststmtchanges-1.1 {
|
||||
catchsql {
|
||||
create table t0 (x);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (2);
|
||||
insert into t0 values (2);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (2);
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 1}
|
||||
|
||||
# LSCC set properly after update
|
||||
do_test laststmtchanges-1.2 {
|
||||
catchsql {
|
||||
update t0 set x=3 where x=1;
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 5}
|
||||
|
||||
# LSCC unchanged within an update statement
|
||||
do_test laststmtchanges-1.3 {
|
||||
catchsql {
|
||||
update t0 set x=x+last_statement_change_count() where x=3;
|
||||
select count() from t0 where x=8;
|
||||
}
|
||||
} {0 5}
|
||||
|
||||
# LSCC set properly after update on table where no rows changed
|
||||
do_test laststmtchanges-1.4 {
|
||||
catchsql {
|
||||
update t0 set x=77 where x=88;
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 0}
|
||||
|
||||
# LSCC set properly after delete from table
|
||||
do_test laststmtchanges-1.5 {
|
||||
catchsql {
|
||||
delete from t0 where x=2;
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 3}
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
# 2.x - tests with after insert trigger
|
||||
|
||||
# LSCC changed properly after insert into table containing after trigger
|
||||
do_test laststmtchanges-2.1 {
|
||||
catchsql {
|
||||
create table t1 (k integer primary key);
|
||||
create table t2 (k integer primary key, v1, v2);
|
||||
create trigger r1 after insert on t1 for each row begin
|
||||
insert into t2 values (NULL, last_statement_change_count(), NULL);
|
||||
update t0 set x=x;
|
||||
update t2 set v2=last_statement_change_count();
|
||||
end;
|
||||
insert into t1 values (77);
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 1}
|
||||
|
||||
# LSCC unchanged upon entry into after insert trigger
|
||||
do_test laststmtchanges-2.2 {
|
||||
catchsql {
|
||||
select v1 from t2;
|
||||
}
|
||||
} {0 3}
|
||||
|
||||
# LSCC changed properly by update within context of after insert trigger
|
||||
do_test laststmtchanges-2.3 {
|
||||
catchsql {
|
||||
select v2 from t2;
|
||||
}
|
||||
} {0 5}
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
# 3.x - tests with after update trigger
|
||||
|
||||
# LSCC changed properly after update into table containing after trigger
|
||||
do_test laststmtchanges-3.1 {
|
||||
catchsql {
|
||||
drop trigger r1;
|
||||
delete from t2; delete from t2;
|
||||
create trigger r1 after update on t1 for each row begin
|
||||
insert into t2 values (NULL, last_statement_change_count(), NULL);
|
||||
delete from t0 where oid=1 or oid=2;
|
||||
update t2 set v2=last_statement_change_count();
|
||||
end;
|
||||
update t1 set k=k;
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 1}
|
||||
|
||||
# LSCC unchanged upon entry into after update trigger
|
||||
do_test laststmtchanges-3.2 {
|
||||
catchsql {
|
||||
select v1 from t2;
|
||||
}
|
||||
} {0 0}
|
||||
|
||||
# LSCC changed properly by delete within context of after update trigger
|
||||
do_test laststmtchanges-3.3 {
|
||||
catchsql {
|
||||
select v2 from t2;
|
||||
}
|
||||
} {0 2}
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
# 4.x - tests with before delete trigger
|
||||
|
||||
# LSCC changed properly on delete from table containing before trigger
|
||||
do_test laststmtchanges-4.1 {
|
||||
catchsql {
|
||||
drop trigger r1;
|
||||
delete from t2; delete from t2;
|
||||
create trigger r1 before delete on t1 for each row begin
|
||||
insert into t2 values (NULL, last_statement_change_count(), NULL);
|
||||
insert into t0 values (5);
|
||||
update t2 set v2=last_statement_change_count();
|
||||
end;
|
||||
delete from t1;
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 1}
|
||||
|
||||
# LSCC unchanged upon entry into before delete trigger
|
||||
do_test laststmtchanges-4.2 {
|
||||
catchsql {
|
||||
select v1 from t2;
|
||||
}
|
||||
} {0 0}
|
||||
|
||||
# LSCC changed properly by insert within context of before delete trigger
|
||||
do_test laststmtchanges-4.3 {
|
||||
catchsql {
|
||||
select v2 from t2;
|
||||
}
|
||||
} {0 1}
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
# 5.x - complex tests with temporary tables and nested instead of triggers
|
||||
|
||||
do_test laststmtchanges-5.1 {
|
||||
catchsql {
|
||||
drop table t0; drop table t1; drop table t2;
|
||||
create temp table t0(x);
|
||||
create temp table t1 (k integer primary key);
|
||||
create temp table t2 (k integer primary key);
|
||||
create temp view v1 as select * from t1;
|
||||
create temp view v2 as select * from t2;
|
||||
create temp table n1 (k integer primary key, n);
|
||||
create temp table n2 (k integer primary key, n);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (2);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (1);
|
||||
insert into t0 values (2);
|
||||
insert into t0 values (2);
|
||||
insert into t0 values (1);
|
||||
create temp trigger r1 instead of insert on v1 for each row begin
|
||||
insert into n1 values (NULL, last_statement_change_count());
|
||||
update t0 set x=x*10 where x=1;
|
||||
insert into n1 values (NULL, last_statement_change_count());
|
||||
insert into t1 values (NEW.k);
|
||||
insert into n1 values (NULL, last_statement_change_count());
|
||||
update t0 set x=x*10 where x=0;
|
||||
insert into v2 values (100+NEW.k);
|
||||
insert into n1 values (NULL, last_statement_change_count());
|
||||
end;
|
||||
create temp trigger r2 instead of insert on v2 for each row begin
|
||||
insert into n2 values (NULL, last_statement_change_count());
|
||||
insert into t2 values (1000+NEW.k);
|
||||
insert into n2 values (NULL, last_statement_change_count());
|
||||
update t0 set x=x*100 where x=0;
|
||||
insert into n2 values (NULL, last_statement_change_count());
|
||||
delete from t0 where x=2;
|
||||
insert into n2 values (NULL, last_statement_change_count());
|
||||
end;
|
||||
insert into t1 values (77);
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 1}
|
||||
|
||||
do_test laststmtchanges-5.2 {
|
||||
catchsql {
|
||||
delete from t1 where k=88;
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 0}
|
||||
|
||||
do_test laststmtchanges-5.3 {
|
||||
catchsql {
|
||||
insert into v1 values (5);
|
||||
select last_statement_change_count();
|
||||
}
|
||||
} {0 0}
|
||||
|
||||
do_test laststmtchanges-5.4 {
|
||||
catchsql {
|
||||
select n from n1;
|
||||
}
|
||||
} {0 {0 5 1 0}}
|
||||
|
||||
do_test laststmtchanges-5.5 {
|
||||
catchsql {
|
||||
select n from n2;
|
||||
}
|
||||
} {0 {0 1 0 3}}
|
||||
|
||||
finish_test
|
||||
|
||||
Reference in New Issue
Block a user