1 # 2007 Febuary 24 2 # 3 # The author disclaims copyright to this source code. In place of 4 # a legal notice, here is a blessing: 5 # 6 # May you do good and not evil. 7 # May you find forgiveness for yourself and forgive others. 8 # May you share freely, never taking more than you give. 9 # 10 #*********************************************************************** 11 # This file implements regression tests for SQLite library. 12 # 13 # This file implements tests to verify that table column values 14 # are pulled out of the database correctly. 15 # 16 # Long ago, the OP_Column opcode was sufficient to pull out the 17 # value of a table column. But then we added the ALTER TABLE ADD COLUMN 18 # feature. An added column might not actually exist in every row, 19 # and so the OP_Column opcode has to contain a default value. Later 20 # still we added a feature whereby a REAL value with no fractional 21 # part is stored in the database file as an integer to save space. 22 # After extracting the value, we have to call OP_RealAffinity to 23 # convert it back to a REAL. 24 # 25 # The sqlite3ExprCodeGetColumn() routine was added to take care of 26 # all of the complications above. The tests in this file attempt 27 # to verify that sqlite3ExprCodeGetColumn() is used instead of a 28 # raw OP_Column in all places where a table column is extracted from 29 # the database. 30 # 31 # $Id: tkt2251.test,v 1.2 2007/09/12 17:01:45 danielk1977 Exp $ 32 33 set testdir [file dirname $argv0] 34 source $testdir/tester.tcl 35 36 ifcapable !altertable { 37 finish_test 38 return 39 } 40 41 # Create sample data. Verify that the default value and type of an added 42 # column is correct for aggregates. 43 do_test tkt2251-1.1 { 44 execsql { 45 CREATE TABLE t1(a INTEGER); 46 INSERT INTO t1 VALUES(1); 47 INSERT INTO t1 VALUES(1); 48 INSERT INTO t1 VALUES(2); 49 INSERT INTO t1 VALUES(9); 50 INSERT INTO t1 VALUES(9); 51 INSERT INTO t1 VALUES(9); 52 INSERT INTO t1 VALUES(3); 53 INSERT INTO t1 VALUES(2); 54 ALTER TABLE t1 ADD COLUMN b REAL DEFAULT 4.0; 55 SELECT avg(b), typeof(avg(b)) FROM t1; 56 } 57 } {4.0 real} 58 do_test tkt2251-1.2 { 59 execsql { 60 SELECT sum(b), typeof(sum(b)) FROM t1; 61 } 62 } {32.0 real} 63 do_test tkt2251-1.3 { 64 execsql { 65 SELECT a, sum(b), typeof(sum(b)) FROM t1 GROUP BY a ORDER BY a; 66 } 67 } {1 8.0 real 2 8.0 real 3 4.0 real 9 12.0 real} 68 69 # Make sure that the REAL value comes out when values are accessed 70 # by index. 71 # 72 do_test tkt2251-2.1 { 73 execsql { 74 SELECT b, typeof(b) FROM t1 WHERE a=3; 75 } 76 } {4.0 real} 77 do_test tkt2251-2.2 { 78 execsql { 79 CREATE INDEX t1i1 ON t1(a,b); 80 SELECT b, typeof(b) FROM t1 WHERE a=3; 81 } 82 } {4.0 real} 83 do_test tkt2251-2.3 { 84 execsql { 85 REINDEX; 86 SELECT b, typeof(b) FROM t1 WHERE a=3; 87 } 88 } {4.0 real} 89 90 # Make sure the correct REAL value is used when copying from one 91 # table to another. 92 # 93 do_test tkt2251-3.1 { 94 execsql { 95 CREATE TABLE t2(x,y); 96 INSERT INTO t2 SELECT * FROM t1; 97 SELECT y, typeof(y) FROM t2 WHERE x=3; 98 } 99 } {4.0 real} 100 do_test tkt2251-3.2 { 101 execsql { 102 CREATE TABLE t3 AS SELECT * FROM t1; 103 SELECT b, typeof(b) FROM t3 WHERE a=3; 104 } 105 } {4.0 real} 106 107 108 finish_test 109
