gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/tkt-2a5629202f.test (about)

     1  # 2012 April 19
     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  # The tests in this file were used while developing the SQLite 4 code. 
    12  #
    13  
    14  set testdir [file dirname $argv0]
    15  source $testdir/tester.tcl
    16  set testprefix tkt-2a5629202f
    17  
    18  # This procedure executes the SQL.  Then it checks to see if the OP_Sort
    19  # opcode was executed.  If an OP_Sort did occur, then "sort" is appended
    20  # to the result.  If no OP_Sort happened, then "nosort" is appended.
    21  #
    22  # This procedure is used to check to make sure sorting is or is not
    23  # occurring as expected.
    24  #
    25  proc cksort {sql} {
    26    set data [execsql $sql]
    27    if {[db status sort]} {set x sort} {set x nosort}
    28    lappend data $x
    29    return $data
    30  }
    31  
    32  do_execsql_test 1.1 {
    33    CREATE TABLE t8(b TEXT, c TEXT);
    34    INSERT INTO t8 VALUES('a',  'one');
    35    INSERT INTO t8 VALUES('b',  'two');
    36    INSERT INTO t8 VALUES(NULL, 'three');
    37    INSERT INTO t8 VALUES(NULL, 'four');
    38  }
    39  
    40  do_execsql_test 1.2 {
    41    SELECT coalesce(b, 'null') || '/' || c FROM t8 x ORDER BY x.b, x.c
    42  } {null/four null/three a/one b/two}
    43  
    44  do_execsql_test 1.3 {
    45    CREATE UNIQUE INDEX i1 ON t8(b);
    46    SELECT coalesce(b, 'null') || '/' || c FROM t8 x ORDER BY x.b, x.c
    47  } {null/four null/three a/one b/two}
    48  
    49  do_execsql_test 1.4 {
    50    DROP INDEX i1;
    51    CREATE UNIQUE INDEX i1 ON t8(b, c);
    52    SELECT coalesce(b, 'null') || '/' || c FROM t8 x ORDER BY x.b, x.c
    53  } {null/four null/three a/one b/two}
    54  
    55  #-------------------------------------------------------------------------
    56  #
    57  
    58  do_execsql_test 2.1 {
    59    CREATE TABLE t2(a, b NOT NULL, c);
    60    CREATE UNIQUE INDEX t2ab ON t2(a, b);
    61    CREATE UNIQUE INDEX t2ba ON t2(b, a);
    62  }
    63  
    64  do_test 2.2 {
    65    cksort { SELECT * FROM t2 WHERE a = 10 ORDER BY a, b, c }
    66  } {nosort}
    67  
    68  do_test 2.3 {
    69    cksort { SELECT * FROM t2 WHERE b = 10 ORDER BY a, b, c }
    70  } {sort}
    71  
    72  do_test 2.4 {
    73    cksort { SELECT * FROM t2 WHERE a IS NULL ORDER BY a, b, c }
    74  } {sort}
    75  
    76  finish_test