github.com/jdgcs/sqlite3@v1.12.1-0.20210908114423-bc5f96e4dd51/testdata/tcl/tkt3334.test (about)

     1  # 2008 August 26
     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  #
    12  # This file implements regression tests for SQLite library. 
    13  # Specifically, it tests that bug #3334 has been fixed by the
    14  # addition of restriction (19) to the subquery flattener optimization.
    15  #
    16  # $Id: tkt3334.test,v 1.1 2008/08/26 12:56:14 drh Exp $
    17  
    18  
    19  set testdir [file dirname $argv0]
    20  source $testdir/tester.tcl
    21  
    22  do_test tkt3334-1.0 {
    23    execsql {
    24      CREATE TABLE t1(a,b);
    25      INSERT INTO t1 VALUES(1,934);
    26      INSERT INTO t1 VALUES(2,221);
    27      INSERT INTO t1 VALUES(1,372);
    28      INSERT INTO t1 VALUES(3,552);
    29      INSERT INTO t1 VALUES(1,719);
    30      INSERT INTO t1 VALUES(4,102);
    31      SELECT * FROM t1 ORDER BY b;
    32    }
    33  } {4 102 2 221 1 372 3 552 1 719 1 934}
    34  
    35  do_test tkt3334-1.1 {
    36    execsql {
    37      SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
    38    }
    39  } {}
    40  do_test tkt3334-1.2 {
    41    execsql {
    42      SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
    43    }
    44  } {0}
    45  do_test tkt3334-1.3 {
    46    execsql {
    47      SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
    48    }
    49  } {1}
    50  do_test tkt3334-1.4 {
    51    execsql {
    52      SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
    53    }
    54  } {1}
    55  do_test tkt3334-1.5 {
    56    execsql {
    57      SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
    58    }
    59  } {1 1 1}
    60  do_test tkt3334-1.6 {
    61    execsql {
    62      SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
    63    }
    64  } {3}
    65  do_test tkt3334-1.7 {
    66    execsql {
    67      SELECT a FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
    68    }
    69  } {1 1 1}
    70  do_test tkt3334-1.8 {
    71    execsql {
    72      SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
    73    }
    74  } {3}
    75  do_test tkt3334-1.9 {
    76    execsql {
    77      SELECT a FROM (SELECT a FROM t1) WHERE a=1;
    78    }
    79  } {1 1 1}
    80  do_test tkt3334-1.10 {
    81    execsql {
    82      SELECT count(*) FROM (SELECT a FROM t1) WHERE a=1;
    83    }
    84  } {3}
    85  
    86  finish_test