gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/select8.test (about)

     1  # 2001 September 15
     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  # The focus of this file is testing that LIMIT and OFFSET work for
    14  # unusual combinations SELECT statements.
    15  #
    16  # $Id: select8.test,v 1.1 2008/01/12 12:48:09 drh Exp $
    17  
    18  set testdir [file dirname $argv0]
    19  source $testdir/tester.tcl
    20  
    21  execsql {
    22    CREATE TABLE songs(songid, artist, timesplayed);
    23    INSERT INTO songs VALUES(1,'one',1);
    24    INSERT INTO songs VALUES(2,'one',2);
    25    INSERT INTO songs VALUES(3,'two',3);
    26    INSERT INTO songs VALUES(4,'three',5);
    27    INSERT INTO songs VALUES(5,'one',7);
    28    INSERT INTO songs VALUES(6,'two',11);
    29  }
    30  set result [execsql {
    31    SELECT DISTINCT artist,sum(timesplayed) AS total      
    32    FROM songs      
    33    GROUP BY LOWER(artist)      
    34  }]
    35  do_test select8-1.1 {
    36    execsql {
    37      SELECT DISTINCT artist,sum(timesplayed) AS total      
    38      FROM songs      
    39      GROUP BY LOWER(artist)      
    40      LIMIT 1 OFFSET 1
    41    }
    42  } [lrange $result 2 3]
    43  do_test select8-1.2 {
    44    execsql {
    45      SELECT DISTINCT artist,sum(timesplayed) AS total      
    46      FROM songs      
    47      GROUP BY LOWER(artist)      
    48      LIMIT 2 OFFSET 1
    49    }
    50  } [lrange $result 2 5]
    51  do_test select8-1.3 {
    52    execsql {
    53      SELECT DISTINCT artist,sum(timesplayed) AS total      
    54      FROM songs      
    55      GROUP BY LOWER(artist)      
    56      LIMIT -1 OFFSET 2
    57    }
    58  } [lrange $result 4 end]
    59  
    60  
    61  finish_test