3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
12 set testdir [file dirname $argv0]
13 source $testdir/tester.tcl
14 set testprefix bestindex3
21 #-------------------------------------------------------------------------
22 # Virtual table callback for a virtual table named $tbl.
24 # The table created is:
26 # "CREATE TABLE t1 (a, b, c)"
28 # This virtual table supports both LIKE and = operators on all columns.
30 proc vtab_cmd {bOmit method args} {
33 return "CREATE TABLE t1(a, b, c)"
37 foreach {clist orderby mask} $args {}
41 if {$bOmit} {set use omit}
43 for {set i 0} {$i < [llength $clist]} {incr i} {
45 array set C [lindex $clist $i]
46 if {$C(usable) && ($C(op)=="like" || $C(op)=="eq")} {
49 lappend ret "[lindex {a b c} $C(column)] [string toupper $C(op)] ?"
55 lappend ret cost 1000000 rows 1000000
57 lappend ret cost 100 rows 10
63 foreach {idxnum idxstr param} $args {}
65 if {$bOmit && $idxstr != ""} {
66 set where " WHERE [string map [list ? '$param' EQ =] $idxstr]"
68 return [list sql "SELECT rowid, * FROM ttt$where"]
74 register_tcl_module db
77 CREATE VIRTUAL TABLE t1 USING tcl("vtab_cmd 0");
81 SELECT * FROM t1 WHERE a LIKE 'abc';
82 } {SCAN t1 VIRTUAL TABLE INDEX 0:a LIKE ?}
85 SELECT * FROM t1 WHERE a = 'abc';
86 } {SCAN t1 VIRTUAL TABLE INDEX 0:a EQ ?}
89 SELECT * FROM t1 WHERE a = 'abc' OR b = 'def';
94 | `--SCAN t1 VIRTUAL TABLE INDEX 0:a EQ ?
96 `--SCAN t1 VIRTUAL TABLE INDEX 0:b EQ ?
100 SELECT * FROM t1 WHERE a LIKE 'abc%' OR b = 'def';
105 | `--SCAN t1 VIRTUAL TABLE INDEX 0:a LIKE ?
107 `--SCAN t1 VIRTUAL TABLE INDEX 0:b EQ ?
110 do_execsql_test 1.5 {
111 CREATE TABLE ttt(a, b, c);
113 INSERT INTO ttt VALUES(1, 'two', 'three');
114 INSERT INTO ttt VALUES(2, 'one', 'two');
115 INSERT INTO ttt VALUES(3, 'three', 'one');
116 INSERT INTO ttt VALUES(4, 'y', 'one');
117 INSERT INTO ttt VALUES(5, 'x', 'two');
118 INSERT INTO ttt VALUES(6, 'y', 'three');
122 do_execsql_test 1.6.$omit.0 "
124 CREATE VIRTUAL TABLE t1 USING tcl('vtab_cmd $omit');
126 do_execsql_test 1.6.$omit.1 {
127 SELECT rowid FROM t1 WHERE c LIKE 'o%'
130 do_execsql_test 1.6.$omit.2 {
131 SELECT rowid FROM t1 WHERE c LIKE 'o%' OR b='y'
134 do_execsql_test 1.6.$omit.3 {
135 SELECT rowid FROM t1 WHERE c = 'three' OR c LIKE 'o%'
139 #-------------------------------------------------------------------------
140 # Test the same pattern works with ordinary tables.
142 # This test does not work if the ICU extension is enabled. ICU overrides
143 # LIKE - and this optimization only works with the built-in LIKE function.
146 do_execsql_test 2.1 {
147 CREATE TABLE t2(x TEXT COLLATE nocase, y TEXT);
148 CREATE INDEX t2x ON t2(x COLLATE nocase);
149 CREATE INDEX t2y ON t2(y);
153 SELECT * FROM t2 WHERE x LIKE 'abc%' OR y = 'def'
154 } [string map {"\n " \n} {
158 | `--SEARCH t2 USING INDEX t2x (x>? AND x<?)
160 `--SEARCH t2 USING INDEX t2y (y=?)
164 #-------------------------------------------------------------------------
165 # Test that any PRIMARY KEY within a sqlite3_decl_vtab() CREATE TABLE
166 # statement is currently ignored.
168 proc vvv_command {method args} {
170 xConnect { return "CREATE TABLE t1(a PRIMARY KEY, b, c)" }
173 proc yyy_command {method args} {
175 xConnect { return "CREATE TABLE t1(a, b, c, PRIMARY KEY(a, b))" }
179 do_execsql_test 3.1 { CREATE VIRTUAL TABLE t3 USING tcl('vvv_command') }
180 do_execsql_test 3.2 { CREATE VIRTUAL TABLE t4 USING tcl('yyy_command') }