AryaWu/sqlite

1# 2015-03-122#3# The author disclaims copyright to this source code.  In place of4# 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# Test that deterministic scalar functions passed constant arguments12# are used with stat4 data.13#14 15set testdir [file dirname $argv0]16source $testdir/tester.tcl17set ::testprefix analyzeF18 19ifcapable {!stat4} {20  finish_test21  return22}23 24proc isqrt {i} { expr { int(sqrt($i)) } }25db func isqrt isqrt26 27do_execsql_test 1.0 {28  CREATE TABLE t1(x INTEGER, y INTEGER);29  WITH data(i) AS (30    SELECT 1 UNION ALL SELECT i+1 FROM data31  )32  INSERT INTO t1 SELECT isqrt(i), isqrt(i) FROM data LIMIT 400;33  CREATE INDEX t1x ON t1(x);34  CREATE INDEX t1y ON t1(y);35  ANALYZE;36}37 38proc str {a} { return $a }39db func str str40 41# Note: tests 7 to 12 might be unstable - as they assume SQLite will42# prefer the expression to the right of the AND clause. Which of43# course could change.44#45# Note 2: tests 9 and 10 depend on the tcl interface creating functions46# without the SQLITE_DETERMINISTIC flag set.47#48foreach {tn where idx} {49  1 "x = 4 AND y = 19"     {t1x (x=?)}50  2 "x = 19 AND y = 4"     {t1y (y=?)}51  3 "x = '4' AND y = '19'" {t1x (x=?)}52  4 "x = '19' AND y = '4'" {t1y (y=?)}53  5 "x = substr('5195', 2, 2) AND y = substr('145', 2, 1)" {t1y (y=?)}54  6 "x = substr('145', 2, 1) AND y = substr('5195', 2, 2)" {t1x (x=?)}55 56  7  "x = substr('5195', 2, 2+0) AND y = substr('145', 2, 1+0)" {t1y (y=?)}57  8  "x = substr('145', 2, 1+0) AND y = substr('5195', 2, 2+0)" {t1y (y=?)}58 59  9  "x = str('19') AND y = str('4')" {t1y (y=?)}60  10 "x = str('4') AND y = str('19')" {t1y (y=?)}61 62  11 "x = nullif('19', 0) AND y = nullif('4', 0)" {t1y (y=?)}63  12 "x = nullif('4', 0) AND y = nullif('19', 0)" {t1y (y=?)}64} {65  set res "SEARCH t1 USING INDEX $idx"66  do_eqp_test 1.$tn "SELECT * FROM t1 WHERE $where" $res67}68 69# Test that functions that do not exist - "func()" - do not cause an error.70#71do_catchsql_test 2.1 {72  SELECT * FROM t1 WHERE x = substr('145', 2, 1) AND y = func(1, 2, 3)73} {1 {no such function: func}}74do_catchsql_test 2.2 {75  UPDATE t1 SET y=y+1 WHERE x = substr('145', 2, 1) AND y = func(1, 2, 3)76} {1 {no such function: func}}77 78 79# Check that functions that accept zero arguments do not cause problems.80#81proc ret {x} { return $x }82 83db func det4 -deterministic [list ret 4]84db func nondet4 [list ret 4]85db func det19 -deterministic [list ret 19]86db func nondet19 [list ret 19]87 88foreach {tn where idx} {89  1 "x = det4() AND y = det19()"     {t1x (x=?)}90  2 "x = det19() AND y = det4()"     {t1y (y=?)}91 92  3 "x = nondet4() AND y = nondet19()"     {t1y (y=?)}93  4 "x = nondet19() AND y = nondet4()"     {t1y (y=?)}94} {95  set res "SEARCH t1 USING INDEX $idx"96  do_eqp_test 3.$tn "SELECT * FROM t1 WHERE $where" $res97}98 99 100execsql { DELETE FROM t1 }101 102proc throw_error {err} { error $err }103db func error -deterministic throw_error104do_catchsql_test 4.1 {105  SELECT * FROM t1 WHERE x = error('error one') AND y = 4;106} {1 {error one}}107 108do_catchsql_test 4.2 {109  SELECT * FROM t1 WHERE x = zeroblob(2200000000) AND y = 4;110} {1 {string or blob too big}}111 112sqlite3_limit db SQLITE_LIMIT_LENGTH 1000000113proc dstr {} { return [string repeat x 1100000] }114db func dstr -deterministic dstr115do_catchsql_test 4.3 {116  SELECT * FROM t1 WHERE x = dstr() AND y = 11;117} {1 {string or blob too big}}118 119do_catchsql_test 4.4 {120  SELECT * FROM t1 WHERE x = test_zeroblob(1100000) AND y = 4;121} {1 {string or blob too big}}122 123# 2016-12-08: Constraints of the form "x=? AND x IS NOT NULL" were being124# mishandled.  The sqlite3Stat4ProbeSetValue() routine was assuming that125# valueNew() was returning a Mem object that was preset to NULL, which is126# not the case.  The consequence was the the "x IS NOT NULL" constraint127# was used to drive the index (via the "x>NULL" pseudo-constraint) rather128# than the "x=?" constraint.129#130do_execsql_test 5.1 {131  DROP TABLE IF EXISTS t1;132  CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT, c INT);133  WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<10000)134    INSERT INTO t1(a, c) SELECT x, x FROM c;135  UPDATE t1 SET b=printf('x%02x',a/500) WHERE a>4000;136  UPDATE t1 SET b='xyz' where a>=9998;137  CREATE INDEX t1b ON t1(b);138  ANALYZE;139  SELECT count(*), b FROM t1 GROUP BY 2 ORDER BY 2;140} {4000 {} 499 x08 500 x09 500 x0a 500 x0b 500 x0c 500 x0d 500 x0e 500 x0f 500 x10 500 x11 500 x12 498 x13 3 xyz}141do_execsql_test 5.2 {142  explain query plan143  SELECT * FROM t1 WHERE b='xyz' AND b IS NOT NULL ORDER BY +a;144  /*                  v---- Should be "=", not ">"  */145} {/USING INDEX t1b .b=/}146do_execsql_test 5.3 {147  SELECT * FROM t1 WHERE b='xyz' AND b IS NOT NULL ORDER BY +a;148} {9998 xyz 9998 9999 xyz 9999 10000 xyz 10000}149 150finish_test151