Index: third_party/sqlite/sqlite-src-3070603/test/tkt2251.test |
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+# 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 |