# 2016 February 19
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
#
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix bestindex1
register_tcl_module db
proc vtab_command {method args} {
switch -- $method {
xConnect {
return "CREATE TABLE t1(a, b, c)"
}
xBestIndex {
set clist [lindex $args 0]
if {[llength $clist]!=1} { error "unexpected constraint list" }
catch { array unset C }
array set C [lindex $clist 0]
if {$C(usable)} {
return "omit 0 cost 0 rows 1 idxnum 555 idxstr eq!"
} else {
return "cost 1000000 rows 0 idxnum 0 idxstr scan..."
}
}
}
return {}
}
do_execsql_test 1.0 {
CREATE VIRTUAL TABLE x1 USING tcl(vtab_command);
} {}
do_eqp_test 1.1 {
SELECT * FROM x1 WHERE a = 'abc'
} {
0 0 0 {SCAN TABLE x1 VIRTUAL TABLE INDEX 555:eq!}
}
do_eqp_test 1.2 {
SELECT * FROM x1 WHERE a IN ('abc', 'def');
} {
0 0 0 {SCAN TABLE x1 VIRTUAL TABLE INDEX 555:eq!}
0 0 0 {EXECUTE LIST SUBQUERY 1}
}
finish_test