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+# 2013-11-04
+#
+# 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.
+#
+#***********************************************************************
+#
+# Test cases for partial indices in WITHOUT ROWID tables
+#
+
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !vtab {
+ finish_test
+ return
+}
+
+load_static_extension db wholenumber;
+do_test index7-1.1 {
+ # Able to parse and manage partial indices
+ execsql {
+ CREATE TABLE t1(a,b,c PRIMARY KEY) WITHOUT rowid;
+ CREATE INDEX t1a ON t1(a) WHERE a IS NOT NULL;
+ CREATE INDEX t1b ON t1(b) WHERE b>10;
+ CREATE VIRTUAL TABLE nums USING wholenumber;
+ INSERT INTO t1(a,b,c)
+ SELECT CASE WHEN value%3!=0 THEN value END, value, value
+ FROM nums WHERE value<=20;
+ SELECT count(a), count(b) FROM t1;
+ PRAGMA integrity_check;
+ }
+} {14 20 ok}
+
+# Make sure the count(*) optimization works correctly with
+# partial indices. Ticket [a5c8ed66cae16243be6] 2013-10-03.
+#
+do_execsql_test index7-1.1.1 {
+ SELECT count(*) FROM t1;
+} {20}
+
+# Error conditions during parsing...
+#
+do_test index7-1.2 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE x IS NOT NULL;
+ }
+} {1 {no such column: x}}
+do_test index7-1.3 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE EXISTS(SELECT * FROM t1);
+ }
+} {1 {subqueries prohibited in partial index WHERE clauses}}
+do_test index7-1.4 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE a!=?1;
+ }
+} {1 {parameters prohibited in partial index WHERE clauses}}
+do_test index7-1.5 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE a!=random();
+ }
+} {1 {functions prohibited in partial index WHERE clauses}}
+do_test index7-1.6 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE a NOT LIKE 'abc%';
+ }
+} {1 {functions prohibited in partial index WHERE clauses}}
+
+do_test index7-1.10 {
+ execsql {
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {14 1} t1b {10 1} ok}
+
+# STAT1 shows the partial indices have a reduced number of
+# rows.
+#
+do_test index7-1.11 {
+ execsql {
+ UPDATE t1 SET a=b;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {20 1} t1b {10 1} ok}
+
+do_test index7-1.11b {
+ execsql {
+ UPDATE t1 SET a=NULL WHERE b%3!=0;
+ UPDATE t1 SET b=b+100;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {6 1} t1b {20 1} ok}
+
+do_test index7-1.12 {
+ execsql {
+ UPDATE t1 SET a=CASE WHEN b%3!=0 THEN b END;
+ UPDATE t1 SET b=b-100;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {13 1} t1b {10 1} ok}
+
+do_test index7-1.13 {
+ execsql {
+ DELETE FROM t1 WHERE b BETWEEN 8 AND 12;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {15 1} t1a {10 1} t1b {8 1} ok}
+
+do_test index7-1.14 {
+ execsql {
+ REINDEX;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {15 1} t1a {10 1} t1b {8 1} ok}
+
+do_test index7-1.15 {
+ execsql {
+ CREATE INDEX t1c ON t1(c);
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {15 1} t1a {10 1} t1b {8 1} t1c {15 1} ok}
+
+# Queries use partial indices as appropriate times.
+#
+do_test index7-2.1 {
+ execsql {
+ CREATE TABLE t2(a,b PRIMARY KEY) without rowid;
+ INSERT INTO t2(a,b) SELECT value, value FROM nums WHERE value<1000;
+ UPDATE t2 SET a=NULL WHERE b%5==0;
+ CREATE INDEX t2a1 ON t2(a) WHERE a IS NOT NULL;
+ SELECT count(*) FROM t2 WHERE a IS NOT NULL;
+ }
+} {800}
+do_test index7-2.2 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a=5;
+ }
+} {/.* TABLE t2 USING COVERING INDEX t2a1 .*/}
+ifcapable stat4||stat3 {
+ do_test index7-2.3stat4 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a IS NOT NULL;
+ }
+ } {/.* TABLE t2 USING COVERING INDEX t2a1 .*/}
+} else {
+ do_test index7-2.3stat4 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a IS NOT NULL AND a>0;
+ }
+ } {/.* TABLE t2 USING COVERING INDEX t2a1 .*/}
+}
+do_test index7-2.4 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a IS NULL;
+ }
+} {~/.*INDEX t2a1.*/}
+
+do_execsql_test index7-2.101 {
+ DROP INDEX t2a1;
+ UPDATE t2 SET a=b, b=b+10000;
+ SELECT b FROM t2 WHERE a=15;
+} {10015}
+do_execsql_test index7-2.102 {
+ CREATE INDEX t2a2 ON t2(a) WHERE a<100 OR a>200;
+ SELECT b FROM t2 WHERE a=15;
+ PRAGMA integrity_check;
+} {10015 ok}
+do_execsql_test index7-2.102eqp {
+ EXPLAIN QUERY PLAN
+ SELECT b FROM t2 WHERE a=15;
+} {~/.*INDEX t2a2.*/}
+do_execsql_test index7-2.103 {
+ SELECT b FROM t2 WHERE a=15 AND a<100;
+} {10015}
+do_execsql_test index7-2.103eqp {
+ EXPLAIN QUERY PLAN
+ SELECT b FROM t2 WHERE a=15 AND a<100;
+} {/.*INDEX t2a2.*/}
+do_execsql_test index7-2.104 {
+ SELECT b FROM t2 WHERE a=515 AND a>200;
+} {10515}
+do_execsql_test index7-2.104eqp {
+ EXPLAIN QUERY PLAN
+ SELECT b FROM t2 WHERE a=515 AND a>200;
+} {/.*INDEX t2a2.*/}
+
+# Partial UNIQUE indices
+#
+do_execsql_test index7-3.1 {
+ CREATE TABLE t3(a,b PRIMARY KEY) without rowid;
+ INSERT INTO t3 SELECT value, value FROM nums WHERE value<200;
+ UPDATE t3 SET a=999 WHERE b%5!=0;
+ CREATE UNIQUE INDEX t3a ON t3(a) WHERE a<>999;
+} {}
+do_test index7-3.2 {
+ # unable to insert a duplicate row a-value that is not 999.
+ catchsql {
+ INSERT INTO t3(a,b) VALUES(150, 'test1');
+ }
+} {1 {UNIQUE constraint failed: t3.a}}
+do_test index7-3.3 {
+ # can insert multiple rows with a==999 because such rows are not
+ # part of the unique index.
+ catchsql {
+ INSERT INTO t3(a,b) VALUES(999, 'test1'), (999, 'test2');
+ }
+} {0 {}}
+do_execsql_test index7-3.4 {
+ SELECT count(*) FROM t3 WHERE a=999;
+} {162}
+integrity_check index7-3.5
+
+do_execsql_test index7-4.0 {
+ VACUUM;
+ PRAGMA integrity_check;
+} {ok}
+
+# Silently ignore database name qualifiers in partial indices.
+#
+do_execsql_test index7-5.0 {
+ CREATE INDEX t3b ON t3(b) WHERE xyzzy.t3.b BETWEEN 5 AND 10;
+ /* ^^^^^-- ignored */
+ ANALYZE;
+ SELECT count(*) FROM t3 WHERE t3.b BETWEEN 5 AND 10;
+ SELECT stat+0 FROM sqlite_stat1 WHERE idx='t3b';
+} {6 6}
+
+finish_test
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