github.com/jdgcs/sqlite3@v1.12.1-0.20210908114423-bc5f96e4dd51/testdata/tcl/autoindex4.test (about)

     1  # 2014-10-24
     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  #
    12  # This file implements regression tests for SQLite library.  The
    13  # focus of this script is testing automatic index creation logic,
    14  # and specifically creation of automatic partial indexes.
    15  #
    16  
    17  set testdir [file dirname $argv0]
    18  source $testdir/tester.tcl
    19  
    20  do_execsql_test autoindex4-1.0 {
    21    CREATE TABLE t1(a,b);
    22    INSERT INTO t1 VALUES(123,'abc'),(234,'def'),(234,'ghi'),(345,'jkl');
    23    CREATE TABLE t2(x,y);
    24    INSERT INTO t2 VALUES(987,'zyx'),(654,'wvu'),(987,'rqp');
    25  
    26    SELECT *, '|' FROM t1, t2 WHERE a=234 AND x=987 ORDER BY +b;
    27  } {234 def 987 rqp | 234 def 987 zyx | 234 ghi 987 rqp | 234 ghi 987 zyx |}
    28  do_execsql_test autoindex4-1.1 {
    29    SELECT *, '|' FROM t1, t2 WHERE a=234 AND x=555;
    30  } {}
    31  
    32  do_execsql_test autoindex4-1.2 {
    33    SELECT *, '|' FROM t1 LEFT JOIN t2 ON a=234 AND x=555;
    34  } {123 abc {} {} | 234 def {} {} | 234 ghi {} {} | 345 jkl {} {} |}
    35  do_execsql_test autoindex4-1.3 {
    36    SELECT *, '|' FROM t1 LEFT JOIN t2 ON x=555 WHERE a=234;
    37  } {234 def {} {} | 234 ghi {} {} |}
    38  do_execsql_test autoindex4-1.4 {
    39    SELECT *, '|' FROM t1 LEFT JOIN t2 WHERE a=234 AND x=555;
    40  } {}
    41  
    42  
    43  do_execsql_test autoindex4-2.0 {
    44    CREATE TABLE t3(e,f);
    45    INSERT INTO t3 VALUES(123,654),(555,444),(234,987);
    46  
    47    SELECT (SELECT count(*) FROM t1, t2 WHERE a=e AND x=f), e, f, '|'
    48      FROM t3
    49     ORDER BY rowid;
    50  } {1 123 654 | 0 555 444 | 4 234 987 |}
    51  
    52  # Ticket [2326c258d02ead33d]
    53  # Two joins, one with and the other without an ORDER BY clause.
    54  # The one without ORDER BY correctly returns two rows of result.
    55  # The one with ORDER BY returns no rows. 
    56  #
    57  do_execsql_test autoindex4-3.0 {
    58    CREATE TABLE A(Name text);
    59    CREATE TABLE Items(ItemName text , Name text);
    60    INSERT INTO Items VALUES('Item1','Parent');
    61    INSERT INTO Items VALUES('Item2','Parent');
    62    CREATE TABLE B(Name text);
    63    
    64    SELECT Items.ItemName
    65      FROM Items
    66        LEFT JOIN A ON (A.Name = Items.ItemName and Items.ItemName = 'dummy')
    67        LEFT JOIN B ON (B.Name = Items.ItemName)
    68      WHERE Items.Name = 'Parent'
    69      ORDER BY Items.ItemName;
    70  } {Item1 Item2}
    71  do_execsql_test autoindex4-3.1 {
    72    CREATE INDEX Items_x1 ON Items(ItemName,Name) WHERE ItemName = 'dummy';
    73    
    74    SELECT Items.ItemName
    75      FROM Items
    76        LEFT JOIN A ON (A.Name = Items.ItemName and Items.ItemName = 'dummy')
    77        LEFT JOIN B ON (B.Name = Items.ItemName)
    78      WHERE Items.Name = 'Parent'
    79      ORDER BY Items.ItemName;
    80  } {Item1 Item2}
    81  
    82  
    83  finish_test