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Annotation of embedaddon/sqlite3/test/tkt2251.test, revision 1.1.1.1

1.1       misho       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