sl@0: # 2007 Febuary 24
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: # This file implements regression tests for SQLite library.
sl@0: #
sl@0: # This file implements tests to verify that table column values
sl@0: # are pulled out of the database correctly.
sl@0: #
sl@0: # Long ago, the OP_Column opcode was sufficient to pull out the
sl@0: # value of a table column.  But then we added the ALTER TABLE ADD COLUMN
sl@0: # feature.  An added column might not actually exist in every row,
sl@0: # and so the OP_Column opcode has to contain a default value.  Later
sl@0: # still we added a feature whereby a REAL value with no fractional
sl@0: # part is stored in the database file as an integer to save space.
sl@0: # After extracting the value, we have to call OP_RealAffinity to
sl@0: # convert it back to a REAL.
sl@0: #
sl@0: # The sqlite3ExprCodeGetColumn() routine was added to take care of
sl@0: # all of the complications above.  The tests in this file attempt
sl@0: # to verify that sqlite3ExprCodeGetColumn() is used instead of a
sl@0: # raw OP_Column in all places where a table column is extracted from
sl@0: # the database.
sl@0: #
sl@0: # $Id: tkt2251.test,v 1.2 2007/09/12 17:01:45 danielk1977 Exp $
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: ifcapable !altertable {
sl@0:   finish_test
sl@0:   return
sl@0: }
sl@0: 
sl@0: # Create sample data.  Verify that the default value and type of an added
sl@0: # column is correct for aggregates.
sl@0: do_test tkt2251-1.1 {
sl@0:   execsql {
sl@0:     CREATE TABLE t1(a INTEGER);
sl@0:     INSERT INTO t1 VALUES(1);
sl@0:     INSERT INTO t1 VALUES(1);
sl@0:     INSERT INTO t1 VALUES(2);
sl@0:     INSERT INTO t1 VALUES(9);
sl@0:     INSERT INTO t1 VALUES(9);
sl@0:     INSERT INTO t1 VALUES(9);
sl@0:     INSERT INTO t1 VALUES(3);
sl@0:     INSERT INTO t1 VALUES(2);
sl@0:     ALTER TABLE t1 ADD COLUMN b REAL DEFAULT 4.0;
sl@0:     SELECT avg(b), typeof(avg(b)) FROM t1;
sl@0:   }
sl@0: } {4.0 real}
sl@0: do_test tkt2251-1.2 {
sl@0:   execsql {
sl@0:     SELECT sum(b), typeof(sum(b)) FROM t1;
sl@0:   }
sl@0: } {32.0 real}
sl@0: do_test tkt2251-1.3 {
sl@0:   execsql {
sl@0:     SELECT a, sum(b), typeof(sum(b)) FROM t1 GROUP BY a ORDER BY a;
sl@0:   }
sl@0: } {1 8.0 real 2 8.0 real 3 4.0 real 9 12.0 real}
sl@0: 
sl@0: # Make sure that the REAL value comes out when values are accessed
sl@0: # by index.
sl@0: #
sl@0: do_test tkt2251-2.1 {
sl@0:   execsql {
sl@0:     SELECT b, typeof(b) FROM t1 WHERE a=3;
sl@0:   }
sl@0: } {4.0 real}
sl@0: do_test tkt2251-2.2 {
sl@0:   execsql {
sl@0:     CREATE INDEX t1i1 ON t1(a,b);
sl@0:     SELECT b, typeof(b) FROM t1 WHERE a=3;
sl@0:   }
sl@0: } {4.0 real}
sl@0: do_test tkt2251-2.3 {
sl@0:   execsql {
sl@0:     REINDEX;
sl@0:     SELECT b, typeof(b) FROM t1 WHERE a=3;
sl@0:   }
sl@0: } {4.0 real}
sl@0: 
sl@0: # Make sure the correct REAL value is used when copying from one
sl@0: # table to another.
sl@0: #
sl@0: do_test tkt2251-3.1 {
sl@0:   execsql {
sl@0:     CREATE TABLE t2(x,y);
sl@0:     INSERT INTO t2 SELECT * FROM t1;
sl@0:     SELECT y, typeof(y) FROM t2 WHERE x=3;
sl@0:   }
sl@0: } {4.0 real}
sl@0: do_test tkt2251-3.2 {
sl@0:   execsql {
sl@0:     CREATE TABLE t3 AS SELECT * FROM t1;
sl@0:     SELECT b, typeof(b) FROM t3 WHERE a=3;
sl@0:   }
sl@0: } {4.0 real}
sl@0: 
sl@0: 
sl@0: finish_test