sqlite/test/tkt-f67b41381a.test
drh 453e0261df Allow the xfer optimization to proceed if the DEFAULT on the very first
column of the two tables is different.  This is a refinement of the
fix for ticket [f67b41381a].

FossilOrigin-Name: 349f483499dd685a8da94923b6bd810a52e5e236
2014-04-26 17:52:08 +00:00

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# 2014 April 26
#
# 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.
#
#***********************************************************************
# Test that ticket f67b41381a has been resolved.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix tkt-f67b41381a
do_execsql_test 1.0 {
CREATE TABLE t1(a);
INSERT INTO t1 VALUES(1);
ALTER TABLE t1 ADD COLUMN b DEFAULT 2;
CREATE TABLE t2(a, b);
INSERT INTO t2 SELECT * FROM t1;
SELECT * FROM t2;
} {1 2}
db cache size 0
foreach {tn tbls xfer} {
1 { CREATE TABLE t1(a, b); CREATE TABLE t2(a, b) } 1
2 { CREATE TABLE t1(a, b DEFAULT 'x'); CREATE TABLE t2(a, b) } 0
3 { CREATE TABLE t1(a, b DEFAULT 'x'); CREATE TABLE t2(a, b DEFAULT 'x') } 1
4 { CREATE TABLE t1(a, b DEFAULT NULL); CREATE TABLE t2(a, b) } 0
5 { CREATE TABLE t1(a DEFAULT 2, b); CREATE TABLE t2(a DEFAULT 1, b) } 1
6 { CREATE TABLE t1(a DEFAULT 1, b); CREATE TABLE t2(a DEFAULT 1, b) } 1
7 { CREATE TABLE t1(a DEFAULT 1, b DEFAULT 1);
CREATE TABLE t2(a DEFAULT 3, b DEFAULT 1) } 1
8 { CREATE TABLE t1(a DEFAULT 1, b DEFAULT 1);
CREATE TABLE t2(a DEFAULT 3, b DEFAULT 3) } 0
} {
execsql { DROP TABLE t1; DROP TABLE t2 }
execsql $tbls
set res 1
db eval { EXPLAIN INSERT INTO t1 SELECT * FROM t2 } {
if {$opcode == "Column"} { set res 0 }
}
do_test 2.$tn [list set res] $xfer
}
finish_test