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| 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 |
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