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sqlite3

    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 1.1.1.1 2012/02/21 17:04:16 misho 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