test/eqp2.test - master - niceSOFT/sqlite

test/eqp2.test
83 строки2 KB
drh
Fix a test case added by [1249eeb1b9759038] that does not work for
20 май 2026, 04:32
20 май 2026, 04:32badc42f
# 2024 March 20
#
# 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 eqp2

do_execsql_test 1.0 {
  CREATE TABLE t1(a, b, c, d);
  CREATE INDEX i1 ON t1(a, b, c);
}

do_eqp_test 1.1 {
  SELECT * FROM t1 ORDER BY a, b, c
} {
  QUERY PLAN
  `--SCAN t1 USING INDEX i1
}


do_eqp_test 1.2 {
  SELECT * FROM t1 ORDER BY a, b, +c
} {
  QUERY PLAN
  |--SCAN t1 USING INDEX i1
  `--USE TEMP B-TREE FOR LAST TERM OF ORDER BY
}

do_eqp_test 1.3 {
  SELECT * FROM t1 ORDER BY a, +b, +c
} {
  QUERY PLAN
  |--SCAN t1 USING INDEX i1
  `--USE TEMP B-TREE FOR LAST 2 TERMS OF ORDER BY
}

#-------------------------------------------------------------------------
# Test that a bound value of 0 is handled in the same way as a literal
# 0 when estimating the probability of (x=<some-integer>).
#
reset_db
do_execsql_test 2.0 {
  CREATE TABLE t1(a INT, b INT);
  CREATE TABLE t2(x INT, y INT);
  CREATE INDEX t1_a ON t1(a);
  CREATE INDEX t1_b ON t1(b);
  CREATE INDEX t2_x ON t2(x);

  WITH s(i) AS ( SELECT 0 UNION ALL SELECT i+1 FROM s WHERE i<999)
  INSERT INTO t1 SELECT i%33, i FROM s;

  WITH s(i) AS ( SELECT 0 UNION ALL SELECT i+1 FROM s WHERE i<59)
  INSERT INTO t2 SELECT i, i%3 FROM s;

  ANALYZE;
}

set zero [expr 0]

if {[permutation] != "prepare"} {
  do_eqp_test 2.1 {
    SELECT * FROM t1 JOIN t2 ON t1.b = t2.x
    WHERE t1.a = 5 AND t2.y = $zero
  } {SEARCH t1 USING INDEX t1_a (a=?)*SEARCH t2 USING INDEX t2_x (x=?)}
}

do_eqp_test 2.2 {
  SELECT * FROM t1 JOIN t2 ON t1.b = t2.x
  WHERE t1.a = 5 AND t2.y = 0
} {SEARCH t1 USING INDEX t1_a (a=?)*SEARCH t2 USING INDEX t2_x (x=?)}


finish_test