| # 2007 Febuary 24 |
| # |
| # 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. |
| # |
| #*********************************************************************** |
| # This file implements regression tests for SQLite library. |
| # |
| # This file implements tests to verify that table column values |
| # are pulled out of the database correctly. |
| # |
| # Long ago, the OP_Column opcode was sufficient to pull out the |
| # value of a table column. But then we added the ALTER TABLE ADD COLUMN |
| # feature. An added column might not actually exist in every row, |
| # and so the OP_Column opcode has to contain a default value. Later |
| # still we added a feature whereby a REAL value with no fractional |
| # part is stored in the database file as an integer to save space. |
| # After extracting the value, we have to call OP_RealAffinity to |
| # convert it back to a REAL. |
| # |
| # The sqlite3ExprCodeGetColumn() routine was added to take care of |
| # all of the complications above. The tests in this file attempt |
| # to verify that sqlite3ExprCodeGetColumn() is used instead of a |
| # raw OP_Column in all places where a table column is extracted from |
| # the database. |
| # |
| # $Id: tkt2251.test,v 1.2 2007/09/12 17:01:45 danielk1977 Exp $ |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| |
| ifcapable !altertable { |
| finish_test |
| return |
| } |
| |
| # Create sample data. Verify that the default value and type of an added |
| # column is correct for aggregates. |
| do_test tkt2251-1.1 { |
| execsql { |
| CREATE TABLE t1(a INTEGER); |
| INSERT INTO t1 VALUES(1); |
| INSERT INTO t1 VALUES(1); |
| INSERT INTO t1 VALUES(2); |
| INSERT INTO t1 VALUES(9); |
| INSERT INTO t1 VALUES(9); |
| INSERT INTO t1 VALUES(9); |
| INSERT INTO t1 VALUES(3); |
| INSERT INTO t1 VALUES(2); |
| ALTER TABLE t1 ADD COLUMN b REAL DEFAULT 4.0; |
| SELECT avg(b), typeof(avg(b)) FROM t1; |
| } |
| } {4.0 real} |
| do_test tkt2251-1.2 { |
| execsql { |
| SELECT sum(b), typeof(sum(b)) FROM t1; |
| } |
| } {32.0 real} |
| do_test tkt2251-1.3 { |
| execsql { |
| SELECT a, sum(b), typeof(sum(b)) FROM t1 GROUP BY a ORDER BY a; |
| } |
| } {1 8.0 real 2 8.0 real 3 4.0 real 9 12.0 real} |
| |
| # Make sure that the REAL value comes out when values are accessed |
| # by index. |
| # |
| do_test tkt2251-2.1 { |
| execsql { |
| SELECT b, typeof(b) FROM t1 WHERE a=3; |
| } |
| } {4.0 real} |
| do_test tkt2251-2.2 { |
| execsql { |
| CREATE INDEX t1i1 ON t1(a,b); |
| SELECT b, typeof(b) FROM t1 WHERE a=3; |
| } |
| } {4.0 real} |
| do_test tkt2251-2.3 { |
| execsql { |
| REINDEX; |
| SELECT b, typeof(b) FROM t1 WHERE a=3; |
| } |
| } {4.0 real} |
| |
| # Make sure the correct REAL value is used when copying from one |
| # table to another. |
| # |
| do_test tkt2251-3.1 { |
| execsql { |
| CREATE TABLE t2(x,y); |
| INSERT INTO t2 SELECT * FROM t1; |
| SELECT y, typeof(y) FROM t2 WHERE x=3; |
| } |
| } {4.0 real} |
| do_test tkt2251-3.2 { |
| execsql { |
| CREATE TABLE t3 AS SELECT * FROM t1; |
| SELECT b, typeof(b) FROM t3 WHERE a=3; |
| } |
| } {4.0 real} |
| |
| |
| finish_test |