[sql] Import reference version of SQLite 3.17..

third_party/sqlite/sqlite-src-3170000/test/eqp.test

+# 2010 November 6
+#
+# 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
+
+ifcapable !compound {
+  finish_test
+  return
+}
+
+set testprefix eqp
+
+#-------------------------------------------------------------------------
+#
+# eqp-1.*:        Assorted tests.
+# eqp-2.*:        Tests for single select statements.
+# eqp-3.*:        Select statements that execute sub-selects.
+# eqp-4.*:        Compound select statements.
+# ...
+# eqp-7.*:        "SELECT count(*) FROM tbl" statements (VDBE code OP_Count).
+#
+
+proc det {args} { uplevel do_eqp_test $args }
+
+do_execsql_test 1.1 {
+  CREATE TABLE t1(a INT, b INT, ex TEXT);
+  CREATE INDEX i1 ON t1(a);
+  CREATE INDEX i2 ON t1(b);
+  CREATE TABLE t2(a INT, b INT, ex TEXT);
+  CREATE TABLE t3(a INT, b INT, ex TEXT);
+}
+
+do_eqp_test 1.2 {
+  SELECT * FROM t2, t1 WHERE t1.a=1 OR t1.b=2;
+} {
+  0 0 1 {SEARCH TABLE t1 USING INDEX i1 (a=?)} 
+  0 0 1 {SEARCH TABLE t1 USING INDEX i2 (b=?)} 
+  0 1 0 {SCAN TABLE t2}
+}
+do_eqp_test 1.3 {
+  SELECT * FROM t2 CROSS JOIN t1 WHERE t1.a=1 OR t1.b=2;
+} {
+  0 0 0 {SCAN TABLE t2}
+  0 1 1 {SEARCH TABLE t1 USING INDEX i1 (a=?)} 
+  0 1 1 {SEARCH TABLE t1 USING INDEX i2 (b=?)} 
+}
+do_eqp_test 1.3 {
+  SELECT a FROM t1 ORDER BY a
+} {
+  0 0 0 {SCAN TABLE t1 USING COVERING INDEX i1}
+}
+do_eqp_test 1.4 {
+  SELECT a FROM t1 ORDER BY +a
+} {
+  0 0 0 {SCAN TABLE t1 USING COVERING INDEX i1}
+  0 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+do_eqp_test 1.5 {
+  SELECT a FROM t1 WHERE a=4
+} {
+  0 0 0 {SEARCH TABLE t1 USING COVERING INDEX i1 (a=?)}
+}
+do_eqp_test 1.6 {
+  SELECT DISTINCT count(*) FROM t3 GROUP BY a;
+} {
+  0 0 0 {SCAN TABLE t3}
+  0 0 0 {USE TEMP B-TREE FOR GROUP BY}
+  0 0 0 {USE TEMP B-TREE FOR DISTINCT}
+}
+
+do_eqp_test 1.7 {
+  SELECT * FROM t3 JOIN (SELECT 1)
+} {
+  0 0 1 {SCAN SUBQUERY 1}
+  0 1 0 {SCAN TABLE t3}
+}
+do_eqp_test 1.8 {
+  SELECT * FROM t3 JOIN (SELECT 1 UNION SELECT 2)
+} {
+  1 0 0 {COMPOUND SUBQUERIES 2 AND 3 USING TEMP B-TREE (UNION)}
+  0 0 1 {SCAN SUBQUERY 1}
+  0 1 0 {SCAN TABLE t3}
+}
+do_eqp_test 1.9 {
+  SELECT * FROM t3 JOIN (SELECT 1 EXCEPT SELECT a FROM t3 LIMIT 17)
+} {
+  3 0 0 {SCAN TABLE t3}
+  1 0 0 {COMPOUND SUBQUERIES 2 AND 3 USING TEMP B-TREE (EXCEPT)}
+  0 0 1 {SCAN SUBQUERY 1}
+  0 1 0 {SCAN TABLE t3}
+}
+do_eqp_test 1.10 {
+  SELECT * FROM t3 JOIN (SELECT 1 INTERSECT SELECT a FROM t3 LIMIT 17)
+} {
+  3 0 0 {SCAN TABLE t3}
+  1 0 0 {COMPOUND SUBQUERIES 2 AND 3 USING TEMP B-TREE (INTERSECT)}
+  0 0 1 {SCAN SUBQUERY 1}
+  0 1 0 {SCAN TABLE t3}
+}
+
+do_eqp_test 1.11 {
+  SELECT * FROM t3 JOIN (SELECT 1 UNION ALL SELECT a FROM t3 LIMIT 17)
+} {
+  3 0 0 {SCAN TABLE t3}
+  1 0 0 {COMPOUND SUBQUERIES 2 AND 3 (UNION ALL)}
+  0 0 1 {SCAN SUBQUERY 1}
+  0 1 0 {SCAN TABLE t3}
+}
+
+#-------------------------------------------------------------------------
+# Test cases eqp-2.* - tests for single select statements.
+#
+drop_all_tables
+do_execsql_test 2.1 {
+  CREATE TABLE t1(x INT, y INT, ex TEXT);
+
+  CREATE TABLE t2(x INT, y INT, ex TEXT);
+  CREATE INDEX t2i1 ON t2(x);
+}
+
+det 2.2.1 "SELECT DISTINCT min(x), max(x) FROM t1 GROUP BY x ORDER BY 1" {
+  0 0 0 {SCAN TABLE t1}
+  0 0 0 {USE TEMP B-TREE FOR GROUP BY}
+  0 0 0 {USE TEMP B-TREE FOR DISTINCT}
+  0 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+det 2.2.2 "SELECT DISTINCT min(x), max(x) FROM t2 GROUP BY x ORDER BY 1" {
+  0 0 0 {SCAN TABLE t2 USING COVERING INDEX t2i1}
+  0 0 0 {USE TEMP B-TREE FOR DISTINCT}
+  0 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+det 2.2.3 "SELECT DISTINCT * FROM t1" {
+  0 0 0 {SCAN TABLE t1}
+  0 0 0 {USE TEMP B-TREE FOR DISTINCT}
+}
+det 2.2.4 "SELECT DISTINCT * FROM t1, t2" {
+  0 0 0 {SCAN TABLE t1}
+  0 1 1 {SCAN TABLE t2}
+  0 0 0 {USE TEMP B-TREE FOR DISTINCT}
+}
+det 2.2.5 "SELECT DISTINCT * FROM t1, t2 ORDER BY t1.x" {
+  0 0 0 {SCAN TABLE t1}
+  0 1 1 {SCAN TABLE t2}
+  0 0 0 {USE TEMP B-TREE FOR DISTINCT}
+  0 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+det 2.2.6 "SELECT DISTINCT t2.x FROM t1, t2 ORDER BY t2.x" {
+  0 0 1 {SCAN TABLE t2 USING COVERING INDEX t2i1}
+  0 1 0 {SCAN TABLE t1}
+}
+
+det 2.3.1 "SELECT max(x) FROM t2" {
+  0 0 0 {SEARCH TABLE t2 USING COVERING INDEX t2i1}
+}
+det 2.3.2 "SELECT min(x) FROM t2" {
+  0 0 0 {SEARCH TABLE t2 USING COVERING INDEX t2i1}
+}
+det 2.3.3 "SELECT min(x), max(x) FROM t2" {
+  0 0 0 {SCAN TABLE t2 USING COVERING INDEX t2i1}
+}
+
+det 2.4.1 "SELECT * FROM t1 WHERE rowid=?" {
+  0 0 0 {SEARCH TABLE t1 USING INTEGER PRIMARY KEY (rowid=?)}
+}
+
+
+
+#-------------------------------------------------------------------------
+# Test cases eqp-3.* - tests for select statements that use sub-selects.
+#
+do_eqp_test 3.1.1 {
+  SELECT (SELECT x FROM t1 AS sub) FROM t1;
+} {
+  0 0 0 {SCAN TABLE t1}
+  0 0 0 {EXECUTE SCALAR SUBQUERY 1}
+  1 0 0 {SCAN TABLE t1 AS sub}
+}
+do_eqp_test 3.1.2 {
+  SELECT * FROM t1 WHERE (SELECT x FROM t1 AS sub);
+} {
+  0 0 0 {SCAN TABLE t1}
+  0 0 0 {EXECUTE SCALAR SUBQUERY 1}
+  1 0 0 {SCAN TABLE t1 AS sub}
+}
+do_eqp_test 3.1.3 {
+  SELECT * FROM t1 WHERE (SELECT x FROM t1 AS sub ORDER BY y);
+} {
+  0 0 0 {SCAN TABLE t1}
+  0 0 0 {EXECUTE SCALAR SUBQUERY 1}
+  1 0 0 {SCAN TABLE t1 AS sub}
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+do_eqp_test 3.1.4 {
+  SELECT * FROM t1 WHERE (SELECT x FROM t2 ORDER BY x);
+} {
+  0 0 0 {SCAN TABLE t1}
+  0 0 0 {EXECUTE SCALAR SUBQUERY 1}
+  1 0 0 {SCAN TABLE t2 USING COVERING INDEX t2i1}
+}
+
+det 3.2.1 {
+  SELECT * FROM (SELECT * FROM t1 ORDER BY x LIMIT 10) ORDER BY y LIMIT 5
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY} 
+  0 0 0 {SCAN SUBQUERY 1} 
+  0 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+det 3.2.2 {
+  SELECT * FROM 
+    (SELECT * FROM t1 ORDER BY x LIMIT 10) AS x1,
+    (SELECT * FROM t2 ORDER BY x LIMIT 10) AS x2
+  ORDER BY x2.y LIMIT 5
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY} 
+  2 0 0 {SCAN TABLE t2 USING INDEX t2i1} 
+  0 0 0 {SCAN SUBQUERY 1 AS x1} 
+  0 1 1 {SCAN SUBQUERY 2 AS x2} 
+  0 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+
+det 3.3.1 {
+  SELECT * FROM t1 WHERE y IN (SELECT y FROM t2)
+} {
+  0 0 0 {SCAN TABLE t1} 
+  0 0 0 {EXECUTE LIST SUBQUERY 1} 
+  1 0 0 {SCAN TABLE t2}
+}
+det 3.3.2 {
+  SELECT * FROM t1 WHERE y IN (SELECT y FROM t2 WHERE t1.x!=t2.x)
+} {
+  0 0 0 {SCAN TABLE t1} 
+  0 0 0 {EXECUTE CORRELATED LIST SUBQUERY 1} 
+  1 0 0 {SCAN TABLE t2}
+}
+det 3.3.3 {
+  SELECT * FROM t1 WHERE EXISTS (SELECT y FROM t2 WHERE t1.x!=t2.x)
+} {
+  0 0 0 {SCAN TABLE t1} 
+  0 0 0 {EXECUTE CORRELATED SCALAR SUBQUERY 1} 
+  1 0 0 {SCAN TABLE t2}
+}
+
+#-------------------------------------------------------------------------
+# Test cases eqp-4.* - tests for composite select statements.
+#
+do_eqp_test 4.1.1 {
+  SELECT * FROM t1 UNION ALL SELECT * FROM t2
+} {
+  1 0 0 {SCAN TABLE t1} 
+  2 0 0 {SCAN TABLE t2} 
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (UNION ALL)} 
+}
+do_eqp_test 4.1.2 {
+  SELECT * FROM t1 UNION ALL SELECT * FROM t2 ORDER BY 2
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2} 
+  2 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (UNION ALL)} 
+}
+do_eqp_test 4.1.3 {
+  SELECT * FROM t1 UNION SELECT * FROM t2 ORDER BY 2
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2} 
+  2 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (UNION)} 
+}
+do_eqp_test 4.1.4 {
+  SELECT * FROM t1 INTERSECT SELECT * FROM t2 ORDER BY 2
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2} 
+  2 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (INTERSECT)} 
+}
+do_eqp_test 4.1.5 {
+  SELECT * FROM t1 EXCEPT SELECT * FROM t2 ORDER BY 2
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2} 
+  2 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (EXCEPT)} 
+}
+
+do_eqp_test 4.2.2 {
+  SELECT * FROM t1 UNION ALL SELECT * FROM t2 ORDER BY 1
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2 USING INDEX t2i1} 
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (UNION ALL)} 
+}
+do_eqp_test 4.2.3 {
+  SELECT * FROM t1 UNION SELECT * FROM t2 ORDER BY 1
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2 USING INDEX t2i1} 
+  2 0 0 {USE TEMP B-TREE FOR RIGHT PART OF ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (UNION)} 
+}
+do_eqp_test 4.2.4 {
+  SELECT * FROM t1 INTERSECT SELECT * FROM t2 ORDER BY 1
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2 USING INDEX t2i1} 
+  2 0 0 {USE TEMP B-TREE FOR RIGHT PART OF ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (INTERSECT)} 
+}
+do_eqp_test 4.2.5 {
+  SELECT * FROM t1 EXCEPT SELECT * FROM t2 ORDER BY 1
+} {
+  1 0 0 {SCAN TABLE t1} 
+  1 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  2 0 0 {SCAN TABLE t2 USING INDEX t2i1} 
+  2 0 0 {USE TEMP B-TREE FOR RIGHT PART OF ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (EXCEPT)} 
+}
+
+do_eqp_test 4.3.1 {
+  SELECT x FROM t1 UNION SELECT x FROM t2
+} {
+  1 0 0 {SCAN TABLE t1} 
+  2 0 0 {SCAN TABLE t2 USING COVERING INDEX t2i1} 
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 USING TEMP B-TREE (UNION)} 
+}
+
+do_eqp_test 4.3.2 {
+  SELECT x FROM t1 UNION SELECT x FROM t2 UNION SELECT x FROM t1
+} {
+  2 0 0 {SCAN TABLE t1} 
+  3 0 0 {SCAN TABLE t2 USING COVERING INDEX t2i1} 
+  1 0 0 {COMPOUND SUBQUERIES 2 AND 3 USING TEMP B-TREE (UNION)}
+  4 0 0 {SCAN TABLE t1} 
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 4 USING TEMP B-TREE (UNION)}
+}
+do_eqp_test 4.3.3 {
+  SELECT x FROM t1 UNION SELECT x FROM t2 UNION SELECT x FROM t1 ORDER BY 1
+} {
+  2 0 0 {SCAN TABLE t1} 
+  2 0 0 {USE TEMP B-TREE FOR ORDER BY} 
+  3 0 0 {SCAN TABLE t2 USING COVERING INDEX t2i1} 
+  1 0 0 {COMPOUND SUBQUERIES 2 AND 3 (UNION)} 
+  4 0 0 {SCAN TABLE t1} 
+  4 0 0 {USE TEMP B-TREE FOR ORDER BY} 
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 4 (UNION)}
+}
+
+#-------------------------------------------------------------------------
+# This next block of tests verifies that the examples on the 
+# lang_explain.html page are correct.
+#
+drop_all_tables
+
+# EVIDENCE-OF: R-47779-47605 sqlite> EXPLAIN QUERY PLAN SELECT a, b
+# FROM t1 WHERE a=1;
+# 0|0|0|SCAN TABLE t1
+#
+do_execsql_test 5.1.0 { CREATE TABLE t1(a INT, b INT, ex TEXT) }
+det 5.1.1 "SELECT a, b FROM t1 WHERE a=1" {
+  0 0 0 {SCAN TABLE t1}
+}
+
+# EVIDENCE-OF: R-55852-17599 sqlite> CREATE INDEX i1 ON t1(a);
+# sqlite> EXPLAIN QUERY PLAN SELECT a, b FROM t1 WHERE a=1;
+# 0|0|0|SEARCH TABLE t1 USING INDEX i1
+#
+do_execsql_test 5.2.0 { CREATE INDEX i1 ON t1(a) }
+det 5.2.1 "SELECT a, b FROM t1 WHERE a=1" {
+  0 0 0 {SEARCH TABLE t1 USING INDEX i1 (a=?)}
+}
+
+# EVIDENCE-OF: R-21179-11011 sqlite> CREATE INDEX i2 ON t1(a, b);
+# sqlite> EXPLAIN QUERY PLAN SELECT a, b FROM t1 WHERE a=1;
+# 0|0|0|SEARCH TABLE t1 USING COVERING INDEX i2 (a=?)
+#
+do_execsql_test 5.3.0 { CREATE INDEX i2 ON t1(a, b) }
+det 5.3.1 "SELECT a, b FROM t1 WHERE a=1" {
+  0 0 0 {SEARCH TABLE t1 USING COVERING INDEX i2 (a=?)}
+}
+
+# EVIDENCE-OF: R-09991-48941 sqlite> EXPLAIN QUERY PLAN
+# SELECT t1.*, t2.* FROM t1, t2 WHERE t1.a=1 AND t1.b>2;
+# 0|0|0|SEARCH TABLE t1 USING COVERING INDEX i2 (a=? AND b>?)
+# 0|1|1|SCAN TABLE t2
+#
+do_execsql_test 5.4.0 {CREATE TABLE t2(c INT, d INT, ex TEXT)}
+det 5.4.1 "SELECT t1.a, t2.c FROM t1, t2 WHERE t1.a=1 AND t1.b>2" {
+  0 0 0 {SEARCH TABLE t1 USING COVERING INDEX i2 (a=? AND b>?)}
+  0 1 1 {SCAN TABLE t2}
+}
+
+# EVIDENCE-OF: R-33626-61085 sqlite> EXPLAIN QUERY PLAN
+# SELECT t1.*, t2.* FROM t2, t1 WHERE t1.a=1 AND t1.b>2;
+# 0|0|1|SEARCH TABLE t1 USING COVERING INDEX i2 (a=? AND b>?)
+# 0|1|0|SCAN TABLE t2
+#
+det 5.5 "SELECT t1.a, t2.c FROM t2, t1 WHERE t1.a=1 AND t1.b>2" {
+  0 0 1 {SEARCH TABLE t1 USING COVERING INDEX i2 (a=? AND b>?)}
+  0 1 0 {SCAN TABLE t2}
+}
+
+# EVIDENCE-OF: R-04002-25654 sqlite> CREATE INDEX i3 ON t1(b);
+# sqlite> EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE a=1 OR b=2;
+# 0|0|0|SEARCH TABLE t1 USING COVERING INDEX i2 (a=?)
+# 0|0|0|SEARCH TABLE t1 USING INDEX i3 (b=?)
+#
+do_execsql_test 5.5.0 {CREATE INDEX i3 ON t1(b)}
+det 5.6.1 "SELECT a, b FROM t1 WHERE a=1 OR b=2" {
+  0 0 0 {SEARCH TABLE t1 USING COVERING INDEX i2 (a=?)}
+  0 0 0 {SEARCH TABLE t1 USING INDEX i3 (b=?)}
+}
+
+# EVIDENCE-OF: R-24577-38891 sqlite> EXPLAIN QUERY PLAN
+# SELECT c, d FROM t2 ORDER BY c;
+# 0|0|0|SCAN TABLE t2
+# 0|0|0|USE TEMP B-TREE FOR ORDER BY
+#
+det 5.7 "SELECT c, d FROM t2 ORDER BY c" {
+  0 0 0 {SCAN TABLE t2}
+  0 0 0 {USE TEMP B-TREE FOR ORDER BY}
+}
+
+# EVIDENCE-OF: R-58157-12355 sqlite> CREATE INDEX i4 ON t2(c);
+# sqlite> EXPLAIN QUERY PLAN SELECT c, d FROM t2 ORDER BY c;
+# 0|0|0|SCAN TABLE t2 USING INDEX i4
+#
+do_execsql_test 5.8.0 {CREATE INDEX i4 ON t2(c)}
+det 5.8.1 "SELECT c, d FROM t2 ORDER BY c" {
+  0 0 0 {SCAN TABLE t2 USING INDEX i4}
+}
+
+# EVIDENCE-OF: R-13931-10421 sqlite> EXPLAIN QUERY PLAN SELECT
+# (SELECT b FROM t1 WHERE a=0), (SELECT a FROM t1 WHERE b=t2.c) FROM t2;
+# 0|0|0|SCAN TABLE t2
+# 0|0|0|EXECUTE SCALAR SUBQUERY 1
+# 1|0|0|SEARCH TABLE t1 USING COVERING INDEX i2 (a=?)
+# 0|0|0|EXECUTE CORRELATED SCALAR SUBQUERY 2
+# 2|0|0|SEARCH TABLE t1 USING INDEX i3 (b=?)
+#
+det 5.9 {
+  SELECT (SELECT b FROM t1 WHERE a=0), (SELECT a FROM t1 WHERE b=t2.c) FROM t2
+} {
+  0 0 0 {SCAN TABLE t2 USING COVERING INDEX i4}
+  0 0 0 {EXECUTE SCALAR SUBQUERY 1}
+  1 0 0 {SEARCH TABLE t1 USING COVERING INDEX i2 (a=?)}
+  0 0 0 {EXECUTE CORRELATED SCALAR SUBQUERY 2}
+  2 0 0 {SEARCH TABLE t1 USING INDEX i3 (b=?)}
+}
+
+# EVIDENCE-OF: R-50892-45943 sqlite> EXPLAIN QUERY PLAN
+# SELECT count(*) FROM (SELECT max(b) AS x FROM t1 GROUP BY a) GROUP BY x;
+# 1|0|0|SCAN TABLE t1 USING COVERING INDEX i2
+# 0|0|0|SCAN SUBQUERY 1
+# 0|0|0|USE TEMP B-TREE FOR GROUP BY
+#
+det 5.10 {
+  SELECT count(*) FROM (SELECT max(b) AS x FROM t1 GROUP BY a) GROUP BY x
+} {
+  1 0 0 {SCAN TABLE t1 USING COVERING INDEX i2}
+  0 0 0 {SCAN SUBQUERY 1}
+  0 0 0 {USE TEMP B-TREE FOR GROUP BY}
+}
+
+# EVIDENCE-OF: R-46219-33846 sqlite> EXPLAIN QUERY PLAN
+# SELECT * FROM (SELECT * FROM t2 WHERE c=1), t1;
+# 0|0|0|SEARCH TABLE t2 USING INDEX i4 (c=?)
+# 0|1|1|SCAN TABLE t1
+#
+det 5.11 "SELECT a, b FROM (SELECT * FROM t2 WHERE c=1), t1" {
+  0 0 0 {SEARCH TABLE t2 USING INDEX i4 (c=?)}
+  0 1 1 {SCAN TABLE t1 USING COVERING INDEX i2}
+}
+
+# EVIDENCE-OF: R-37879-39987 sqlite> EXPLAIN QUERY PLAN
+# SELECT a FROM t1 UNION SELECT c FROM t2;
+# 1|0|0|SCAN TABLE t1
+# 2|0|0|SCAN TABLE t2
+# 0|0|0|COMPOUND SUBQUERIES 1 AND 2 USING TEMP B-TREE (UNION)
+#
+det 5.12 "SELECT a,b FROM t1 UNION SELECT c, 99 FROM t2" {
+  1 0 0 {SCAN TABLE t1 USING COVERING INDEX i2}
+  2 0 0 {SCAN TABLE t2 USING COVERING INDEX i4}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 USING TEMP B-TREE (UNION)}
+}
+
+# EVIDENCE-OF: R-44864-63011 sqlite> EXPLAIN QUERY PLAN
+# SELECT a FROM t1 EXCEPT SELECT d FROM t2 ORDER BY 1;
+# 1|0|0|SCAN TABLE t1 USING COVERING INDEX i2
+# 2|0|0|SCAN TABLE t2 2|0|0|USE TEMP B-TREE FOR ORDER BY
+# 0|0|0|COMPOUND SUBQUERIES 1 AND 2 (EXCEPT)
+#
+det 5.13 "SELECT a FROM t1 EXCEPT SELECT d FROM t2 ORDER BY 1" {
+  1 0 0 {SCAN TABLE t1 USING COVERING INDEX i1}
+  2 0 0 {SCAN TABLE t2}
+  2 0 0 {USE TEMP B-TREE FOR ORDER BY}
+  0 0 0 {COMPOUND SUBQUERIES 1 AND 2 (EXCEPT)}
+}
+
+
+if {![nonzero_reserved_bytes]} {
+  #-------------------------------------------------------------------------
+  # The following tests - eqp-6.* - test that the example C code on 
+  # documentation page eqp.html works. The C code is duplicated in test1.c
+  # and wrapped in Tcl command [print_explain_query_plan] 
+  #
+  set boilerplate {
+    proc explain_query_plan {db sql} {
+      set stmt [sqlite3_prepare_v2 db $sql -1 DUMMY]
+      print_explain_query_plan $stmt
+      sqlite3_finalize $stmt
+    }
+    sqlite3 db test.db
+    explain_query_plan db {%SQL%}
+    db close
+    exit
+  }
+  
+  # Do a "Print Explain Query Plan" test.
+  proc do_peqp_test {tn sql res} {
+    set fd [open script.tcl w]
+    puts $fd [string map [list %SQL% $sql] $::boilerplate]
+    close $fd
+  
+    uplevel do_test $tn [list {
+      set fd [open "|[info nameofexec] script.tcl"]
+      set data [read $fd]
+      close $fd
+      set data
+    }] [list $res]
+  }
+  
+  do_peqp_test 6.1 {
+    SELECT a, b FROM t1 EXCEPT SELECT d, 99 FROM t2 ORDER BY 1
+  } [string trimleft {
+1 0 0 SCAN TABLE t1 USING COVERING INDEX i2
+2 0 0 SCAN TABLE t2
+2 0 0 USE TEMP B-TREE FOR ORDER BY
+0 0 0 COMPOUND SUBQUERIES 1 AND 2 (EXCEPT)
+}]
+}
+
+#-------------------------------------------------------------------------
+# The following tests - eqp-7.* - test that queries that use the OP_Count
+# optimization return something sensible with EQP.
+#
+drop_all_tables
+
+do_execsql_test 7.0 {
+  CREATE TABLE t1(a INT, b INT, ex CHAR(100));
+  CREATE TABLE t2(a INT, b INT, ex CHAR(100));
+  CREATE INDEX i1 ON t2(a);
+}
+
+det 7.1 "SELECT count(*) FROM t1" {
+  0 0 0 {SCAN TABLE t1}
+}
+
+det 7.2 "SELECT count(*) FROM t2" {
+  0 0 0 {SCAN TABLE t2 USING COVERING INDEX i1}
+}
+
+do_execsql_test 7.3 {
+  INSERT INTO t1(a,b) VALUES(1, 2);
+  INSERT INTO t1(a,b) VALUES(3, 4);
+
+  INSERT INTO t2(a,b) VALUES(1, 2);
+  INSERT INTO t2(a,b) VALUES(3, 4);
+  INSERT INTO t2(a,b) VALUES(5, 6);
+ 
+  ANALYZE;
+}
+
+db close
+sqlite3 db test.db
+
+det 7.4 "SELECT count(*) FROM t1" {
+  0 0 0 {SCAN TABLE t1}
+}
+
+det 7.5 "SELECT count(*) FROM t2" {
+  0 0 0 {SCAN TABLE t2 USING COVERING INDEX i1}
+}
+
+#-------------------------------------------------------------------------
+# The following tests - eqp-8.* - test that queries that use the OP_Count
+# optimization return something sensible with EQP.
+#
+drop_all_tables
+
+do_execsql_test 8.0 {
+  CREATE TABLE t1(a, b, c, PRIMARY KEY(b, c)) WITHOUT ROWID;
+  CREATE TABLE t2(a, b, c);
+}
+
+det 8.1.1 "SELECT * FROM t2" {
+  0 0 0 {SCAN TABLE t2}
+}
+
+det 8.1.2 "SELECT * FROM t2 WHERE rowid=?" {
+  0 0 0 {SEARCH TABLE t2 USING INTEGER PRIMARY KEY (rowid=?)}
+}
+
+det 8.1.3 "SELECT count(*) FROM t2" {
+  0 0 0 {SCAN TABLE t2}
+}
+
+det 8.2.1 "SELECT * FROM t1" {
+  0 0 0 {SCAN TABLE t1}
+}
+
+det 8.2.2 "SELECT * FROM t1 WHERE b=?" {
+  0 0 0 {SEARCH TABLE t1 USING PRIMARY KEY (b=?)}
+}
+
+det 8.2.3 "SELECT * FROM t1 WHERE b=? AND c=?" {
+  0 0 0 {SEARCH TABLE t1 USING PRIMARY KEY (b=? AND c=?)}
+}
+
+det 8.2.4 "SELECT count(*) FROM t1" {
+  0 0 0 {SCAN TABLE t1}
+}
+
+
+
+
+
+
+
+finish_test