From b406626c64313ae348996c243a0a05d3f6ed2c3c Mon Sep 17 00:00:00 2001
From: Jan Mercl <0xjnml@gmail.com>
Date: Sun, 26 Jul 2020 22:36:18 +0200
Subject: release v1.4.0-beta1

---
 testdata/tcl/indexexpr1.test | 486 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 486 insertions(+)
 create mode 100644 testdata/tcl/indexexpr1.test

(limited to 'testdata/tcl/indexexpr1.test')

diff --git a/testdata/tcl/indexexpr1.test b/testdata/tcl/indexexpr1.test
new file mode 100644
index 0000000..19c2573
--- /dev/null
+++ b/testdata/tcl/indexexpr1.test
@@ -0,0 +1,486 @@
+# 2015-08-31
+#
+# 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.
+#
+#***********************************************************************
+# This file implements regression tests for SQLite library.  The
+# focus of this file is testing indexes on expressions.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+do_execsql_test indexexpr1-100 {
+  CREATE TABLE t1(a,b,c);
+  INSERT INTO t1(a,b,c)
+      /*  123456789 123456789 123456789 123456789 123456789 123456789 */ 
+  VALUES('In_the_beginning_was_the_Word',1,1),
+        ('and_the_Word_was_with_God',1,2),
+        ('and_the_Word_was_God',1,3),
+        ('The_same_was_in_the_beginning_with_God',2,1),
+        ('All_things_were_made_by_him',3,1),
+        ('and_without_him_was_not_any_thing_made_that_was_made',3,2);
+  CREATE INDEX t1a1 ON t1(substr(a,1,12));
+} {}
+do_execsql_test indexexpr1-110 {
+  SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
+} {1 2 | 1 3 |}
+do_execsql_test indexexpr1-110eqp {
+  EXPLAIN QUERY PLAN
+  SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
+} {/USING INDEX t1a1/}
+do_execsql_test indexexpr1-120 {
+  SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
+} {1 2 | 1 3 |}
+do_execsql_test indexexpr1-120eqp {
+  EXPLAIN QUERY PLAN
+  SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
+} {/USING INDEX t1a1/}
+
+do_execsql_test indexexpr1-130 {
+  CREATE INDEX t1ba ON t1(b,substr(a,2,3),c);
+  SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
+} {2 3}
+do_execsql_test indexexpr1-130eqp {
+  EXPLAIN QUERY PLAN
+  SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
+} {/USING INDEX t1ba/}
+
+do_execsql_test indexexpr1-140 {
+  SELECT rowid, substr(a,b,3), '|' FROM t1 ORDER BY 2;
+} {1 In_ | 2 and | 3 and | 6 d_w | 4 he_ | 5 l_t |}
+do_execsql_test indexexpr1-141 {
+  CREATE INDEX t1abx ON t1(substr(a,b,3));
+  SELECT rowid FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +rowid;
+} {1 2 3}
+do_execsql_test indexexpr1-141eqp {
+  EXPLAIN QUERY PLAN
+  SELECT rowid FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +rowid;
+} {/USING INDEX t1abx/}
+do_execsql_test indexexpr1-142 {
+  SELECT rowid FROM t1 WHERE +substr(a,b,3)<='and' ORDER BY +rowid;
+} {1 2 3}
+do_execsql_test indexexpr1-150 {
+  SELECT rowid FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
+   ORDER BY +rowid;
+} {2 3 5}
+do_execsql_test indexexpr1-150eqp {
+  EXPLAIN QUERY PLAN
+  SELECT rowid FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
+   ORDER BY +rowid;
+} {/USING INDEX t1abx/}
+
+do_execsql_test indexexpr1-160 {
+  ALTER TABLE t1 ADD COLUMN d;
+  UPDATE t1 SET d=length(a);
+  CREATE INDEX t1a2 ON t1(SUBSTR(a, 27, 3)) WHERE d>=29;
+  SELECT rowid, b, c FROM t1
+   WHERE substr(a,27,3)=='ord' AND d>=29;
+} {1 1 1}
+do_execsql_test indexexpr1-160eqp {
+  EXPLAIN QUERY PLAN
+  SELECT rowid, b, c FROM t1
+   WHERE substr(a,27,3)=='ord' AND d>=29;
+} {/USING INDEX t1a2/}
+
+# ORDER BY using an indexed expression
+#
+do_execsql_test indexexpr1-170 {
+  CREATE INDEX t1alen ON t1(length(a));
+  SELECT length(a) FROM t1 ORDER BY length(a);
+} {20 25 27 29 38 52}
+do_execsql_test indexexpr1-170eqp {
+  EXPLAIN QUERY PLAN
+  SELECT length(a) FROM t1 ORDER BY length(a);
+} {/SCAN TABLE t1 USING INDEX t1alen/}
+do_execsql_test indexexpr1-171 {
+  SELECT length(a) FROM t1 ORDER BY length(a) DESC;
+} {52 38 29 27 25 20}
+do_execsql_test indexexpr1-171eqp {
+  EXPLAIN QUERY PLAN
+  SELECT length(a) FROM t1 ORDER BY length(a) DESC;
+} {/SCAN TABLE t1 USING INDEX t1alen/}
+
+do_execsql_test indexexpr1-200 {
+  DROP TABLE t1;
+  CREATE TABLE t1(id ANY PRIMARY KEY, a,b,c) WITHOUT ROWID;
+  INSERT INTO t1(id,a,b,c)
+  VALUES(1,'In_the_beginning_was_the_Word',1,1),
+        (2,'and_the_Word_was_with_God',1,2),
+        (3,'and_the_Word_was_God',1,3),
+        (4,'The_same_was_in_the_beginning_with_God',2,1),
+        (5,'All_things_were_made_by_him',3,1),
+        (6,'and_without_him_was_not_any_thing_made_that_was_made',3,2);
+  CREATE INDEX t1a1 ON t1(substr(a,1,12));
+} {}
+do_execsql_test indexexpr1-210 {
+  SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
+} {1 2 | 1 3 |}
+do_execsql_test indexexpr1-210eqp {
+  EXPLAIN QUERY PLAN
+  SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
+} {/USING INDEX t1a1/}
+do_execsql_test indexexpr1-220 {
+  SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
+} {1 2 | 1 3 |}
+do_execsql_test indexexpr1-220eqp {
+  EXPLAIN QUERY PLAN
+  SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
+} {/USING INDEX t1a1/}
+
+do_execsql_test indexexpr1-230 {
+  CREATE INDEX t1ba ON t1(b,substr(a,2,3),c);
+  SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
+} {2 3}
+do_execsql_test indexexpr1-230eqp {
+  EXPLAIN QUERY PLAN
+  SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
+} {/USING INDEX t1ba/}
+
+do_execsql_test indexexpr1-240 {
+  SELECT id, substr(a,b,3), '|' FROM t1 ORDER BY 2;
+} {1 In_ | 2 and | 3 and | 6 d_w | 4 he_ | 5 l_t |}
+do_execsql_test indexexpr1-241 {
+  CREATE INDEX t1abx ON t1(substr(a,b,3));
+  SELECT id FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +id;
+} {1 2 3}
+do_execsql_test indexexpr1-241eqp {
+  EXPLAIN QUERY PLAN
+  SELECT id FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +id;
+} {/USING INDEX t1abx/}
+do_execsql_test indexexpr1-242 {
+  SELECT id FROM t1 WHERE +substr(a,b,3)<='and' ORDER BY +id;
+} {1 2 3}
+do_execsql_test indexexpr1-250 {
+  SELECT id FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
+   ORDER BY +id;
+} {2 3 5}
+do_execsql_test indexexpr1-250eqp {
+  EXPLAIN QUERY PLAN
+  SELECT id FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
+   ORDER BY +id;
+} {/USING INDEX t1abx/}
+
+do_execsql_test indexexpr1-260 {
+  ALTER TABLE t1 ADD COLUMN d;
+  UPDATE t1 SET d=length(a);
+  CREATE INDEX t1a2 ON t1(SUBSTR(a, 27, 3)) WHERE d>=29;
+  SELECT id, b, c FROM t1
+   WHERE substr(a,27,3)=='ord' AND d>=29;
+} {1 1 1}
+do_execsql_test indexexpr1-260eqp {
+  EXPLAIN QUERY PLAN
+  SELECT id, b, c FROM t1
+   WHERE substr(a,27,3)=='ord' AND d>=29;
+} {/USING INDEX t1a2/}
+
+
+do_catchsql_test indexexpr1-300 {
+  CREATE TABLE t2(a,b,c); INSERT INTO t2 VALUES(1,2,3);
+  CREATE INDEX t2x1 ON t2(a,b+random());
+} {1 {non-deterministic functions prohibited in index expressions}}
+do_catchsql_test indexexpr1-301 {
+  CREATE INDEX t2x1 ON t2(julianday('now',a));
+} {1 {non-deterministic use of julianday() in an index}}
+do_catchsql_test indexexpr1-310 {
+  CREATE INDEX t2x2 ON t2(a,b+(SELECT 15));
+} {1 {subqueries prohibited in index expressions}}
+do_catchsql_test indexexpr1-320 {
+  CREATE TABLE e1(x,y,UNIQUE(y,substr(x,1,5)));
+} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}}
+do_catchsql_test indexexpr1-330 {
+  CREATE TABLE e1(x,y,PRIMARY KEY(y,substr(x,1,5)));
+} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}}
+do_catchsql_test indexexpr1-331 {
+  CREATE TABLE e1(x,y,PRIMARY KEY(y,substr(x,1,5))) WITHOUT ROWID;
+} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}}
+do_catchsql_test indexexpr1-340 {
+  CREATE TABLE e1(x,y,FOREIGN KEY(substr(y,1,5)) REFERENCES t1);
+} {1 {near "(": syntax error}}
+
+do_execsql_test indexexpr1-400 {
+  CREATE TABLE t3(a,b,c);
+  WITH RECURSIVE c(x) AS (VALUES(1) UNION SELECT x+1 FROM c WHERE x<30)
+  INSERT INTO t3(a,b,c)
+    SELECT x, printf('ab%04xyz',x), random() FROM c;
+  CREATE UNIQUE INDEX t3abc ON t3(CAST(a AS text), b, substr(c,1,3));
+  SELECT a FROM t3 WHERE CAST(a AS text)<='10' ORDER BY +a;
+  PRAGMA integrity_check;
+} {1 10 ok}
+do_catchsql_test indexexpr1-410 {
+  INSERT INTO t3 SELECT * FROM t3 WHERE rowid=10;
+} {1 {UNIQUE constraint failed: index 't3abc'}}
+
+do_execsql_test indexexpr1-500 {
+  CREATE TABLE t5(a);
+  CREATE TABLE cnt(x);
+  WITH RECURSIVE
+    c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<5)
+  INSERT INTO cnt(x) SELECT x FROM c;
+  INSERT INTO t5(a) SELECT printf('abc%03dxyz',x) FROM cnt;
+  CREATE INDEX t5ax ON t5( substr(a,4,3) );
+} {}
+do_execsql_test indexexpr1-510 {
+  -- The use of the "k" alias in the WHERE clause is technically
+  -- illegal, but SQLite allows it for historical reasons.  In this
+  -- test and the next, verify that "k" can be used by the t5ax index
+  SELECT substr(a,4,3) AS k FROM cnt, t5 WHERE k=printf('%03d',x);
+} {001 002 003 004 005}
+do_execsql_test indexexpr1-510eqp {
+  EXPLAIN QUERY PLAN
+  SELECT substr(a,4,3) AS k FROM cnt, t5 WHERE k=printf('%03d',x);
+} {/USING INDEX t5ax/}
+
+# Skip-scan on an indexed expression
+#
+do_execsql_test indexexpr1-600 {
+  DROP TABLE IF EXISTS t4;
+  CREATE TABLE t4(a,b,c,d,e,f,g,h,i);
+  CREATE INDEX t4all ON t4(a,b,c<d,e,f,i,h);
+  INSERT INTO t4 VALUES(1,2,3,4,5,6,7,8,9);
+  ANALYZE;
+  DELETE FROM sqlite_stat1;
+  INSERT INTO sqlite_stat1
+    VALUES('t4','t4all','600000 160000 40000 10000 2000 600 100 40 10');
+  ANALYZE sqlite_master;
+  SELECT i FROM t4 WHERE e=5;
+} {9}
+
+# Indexed expressions on both sides of an == in a WHERE clause.
+#
+do_execsql_test indexexpr1-700 {
+  DROP TABLE IF EXISTS t7;
+  CREATE TABLE t7(a,b,c);
+  INSERT INTO t7(a,b,c) VALUES(1,2,2),('abc','def','def'),(4,5,6);
+  CREATE INDEX t7b ON t7(+b);
+  CREATE INDEX t7c ON t7(+c);
+  SELECT *, '|' FROM t7 WHERE +b=+c ORDER BY +a;
+} {1 2 2 | abc def def |}
+do_execsql_test indexexpr1-710 {
+  CREATE TABLE t71(a,b,c);
+  CREATE INDEX t71bc ON t71(b+c);
+  CREATE TABLE t72(x,y,z);
+  CREATE INDEX t72yz ON t72(y+z);
+  INSERT INTO t71(a,b,c) VALUES(1,11,2),(2,7,15),(3,5,4);
+  INSERT INTO t72(x,y,z) VALUES(1,10,3),(2,8,14),(3,9,9);
+  SELECT a, x, '|' FROM t71, t72
+   WHERE b+c=y+z
+  ORDER BY +a, +x;
+} {1 1 | 2 2 |}
+
+# Collating sequences on indexes of expressions
+#
+do_execsql_test indexexpr1-800 {
+  DROP TABLE IF EXISTS t8;
+  CREATE TABLE t8(a INTEGER PRIMARY KEY, b TEXT);
+  CREATE UNIQUE INDEX t8bx ON t8(substr(b,2,4) COLLATE nocase);
+  INSERT INTO t8(a,b) VALUES(1,'Alice'),(2,'Bartholemew'),(3,'Cynthia');
+  SELECT * FROM t8 WHERE substr(b,2,4)='ARTH' COLLATE nocase;
+} {2 Bartholemew}
+do_catchsql_test indexexpr1-810 {
+  INSERT INTO t8(a,b) VALUES(4,'BARTHMERE');
+} {1 {UNIQUE constraint failed: index 't8bx'}}
+do_catchsql_test indexexpr1-820 {
+  DROP INDEX t8bx;
+  CREATE UNIQUE INDEX t8bx ON t8(substr(b,2,4) COLLATE rtrim);
+  INSERT INTO t8(a,b) VALUES(4,'BARTHMERE');
+} {0 {}}
+
+# Check that PRAGMA integrity_check works correctly on a
+# UNIQUE index that includes rowid and expression terms.
+#
+do_execsql_test indexexpr1-900 {
+  CREATE TABLE t9(a,b,c,d);
+  CREATE UNIQUE INDEX t9x1 ON t9(c,abs(d),b);
+  INSERT INTO t9(rowid,a,b,c,d) VALUES(1,2,3,4,5);
+  INSERT INTO t9(rowid,a,b,c,d) VALUES(2,NULL,NULL,NULL,NULL);
+  INSERT INTO t9(rowid,a,b,c,d) VALUES(3,NULL,NULL,NULL,NULL);
+  INSERT INTO t9(rowid,a,b,c,d) VALUES(4,5,6,7,8);
+  PRAGMA integrity_check;
+} {ok}
+do_catchsql_test indexexpr1-910 {
+  INSERT INTO t9(a,b,c,d) VALUES(5,6,7,-8);
+} {1 {UNIQUE constraint failed: index 't9x1'}}
+
+# Test cases derived from a NEVER() maro failure discovered by
+# Jonathan Metzman using AFL
+#
+do_execsql_test indexexpr1-1000 {
+  DROP TABLE IF EXISTS t0;
+  CREATE TABLE t0(a,b,t);
+  CREATE INDEX i ON t0(a in(0,1));
+  INSERT INTO t0 VALUES(0,1,2),(2,3,4),(5,6,7);
+  UPDATE t0 SET b=99 WHERE (a in(0,1))=0;
+  SELECT *, '|' FROM t0 ORDER BY +a;
+} {0 1 2 | 2 99 4 | 5 99 7 |}
+do_execsql_test indexexpr1-1010 {
+  UPDATE t0 SET b=88 WHERE (a in(0,1))=1;
+  SELECT *, '|' FROM t0 ORDER BY +a;
+} {0 88 2 | 2 99 4 | 5 99 7 |}
+
+# 2016-10-10
+# Make sure indexes on expressions skip over initial NULL values in the
+# index as they are suppose to do.
+# Ticket https://www.sqlite.org/src/tktview/4baa46491212947
+#
+do_execsql_test indexexpr1-1100 {
+  DROP TABLE IF EXISTS t1;
+  CREATE TABLE t1(a);
+  INSERT INTO t1 VALUES(NULL),(1);
+  SELECT '1:', typeof(a), a FROM t1 WHERE a<10;
+  SELECT '2:', typeof(a), a FROM t1 WHERE a+0<10;
+  CREATE INDEX t1x1 ON t1(a);
+  CREATE INDEX t1x2 ON t1(a+0);
+  SELECT '3:', typeof(a), a FROM t1 WHERE a<10;
+  SELECT '4:', typeof(a), a FROM t1 WHERE a+0<10;
+} {1: integer 1 2: integer 1 3: integer 1 4: integer 1}
+
+do_execsql_test indexexpr1-1200 {
+  CREATE TABLE t10(a int, b int, c int, d int);
+  INSERT INTO t10(a, b, c, d) VALUES(0, 0, 2, 2);
+  INSERT INTO t10(a, b, c, d) VALUES(0, 0, 0, 0);
+  INSERT INTO t10(a, b, c, d) VALUES(0, 0, 1, 1);
+  INSERT INTO t10(a, b, c, d) VALUES(1, 1, 1, 1);
+  INSERT INTO t10(a, b, c, d) VALUES(1, 1, 0, 0);
+  INSERT INTO t10(a, b, c, d) VALUES(2, 2, 0, 0);
+
+  SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d;
+} {
+  0 0 0 2 0 4 2 0 2 2 4 0
+}
+do_execsql_test indexexpr1-1200.1 {
+  CREATE INDEX t10_ab ON t10(a+b);
+}
+do_execsql_test indexexpr1-1200.2 {
+  SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d;
+} {
+  0 0 0 2 0 4 2 0 2 2 4 0
+}
+do_execsql_test indexexpr1-1200.3 {
+  CREATE INDEX t10_abcd ON t10(a+b,c+d);
+}
+do_execsql_test indexexpr1-1200.4 {
+  SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d;
+} {
+  0 0 0 2 0 4 2 0 2 2 4 0
+}
+
+# Ticket https://www.sqlite.org/src/tktview/eb703ba7b50c1a
+# Incorrect result using an index on an expression with a collating function
+#
+do_execsql_test indexexpr1-1300.1 {
+  CREATE TABLE t1300(a INTEGER PRIMARY KEY, b);
+  INSERT INTO t1300 VALUES(1,'coffee'),(2,'COFFEE'),(3,'stress'),(4,'STRESS');
+  CREATE INDEX t1300bexpr ON t1300( substr(b,4) );
+  SELECT a FROM t1300 WHERE substr(b,4)='ess' COLLATE nocase ORDER BY +a;
+} {3 4}
+
+# Ticket https://sqlite.org/src/tktview/aa98619a
+# Assertion fault using an index on a constant
+#
+do_execsql_test indexexpr1-1400 {
+  CREATE TABLE t1400(x TEXT);
+  CREATE INDEX t1400x ON t1400(1);  -- Index on a constant
+  SELECT 1 IN (SELECT 2) FROM t1400;
+} {}
+do_execsql_test indexexpr1-1410 {
+  INSERT INTO t1400 VALUES('a'),('b');
+  SELECT 1 IN (SELECT 2) FROM t1400;
+} {0 0}
+do_execsql_test indexexpr1-1420 {
+  SELECT 1 IN (SELECT 2 UNION ALL SELECT 1) FROM t1400;
+} {1 1}
+do_execsql_test indexexpr1-1430 {
+  DROP INDEX t1400x;
+  CREATE INDEX t1400x ON t1400(abs(15+3));
+  SELECT abs(15+3) IN (SELECT 17 UNION ALL SELECT 18) FROM t1;
+} {1 1}
+
+# 2018-01-02 ticket https://sqlite.org/src/info/dc3f932f5a147771
+# A REPLACE into a table that uses an index on an expression causes
+# an assertion fault.  Problem discovered by OSSFuzz.
+#
+do_execsql_test indexexpr1-1500 {
+  CREATE TABLE t1500(a INT PRIMARY KEY, b INT UNIQUE);
+  CREATE INDEX t1500ab ON t1500(a*b);
+  INSERT INTO t1500(a,b) VALUES(1,2);
+  REPLACE INTO t1500(a,b) VALUES(1,3);  -- formerly caused assertion fault
+  SELECT * FROM t1500;
+} {1 3}
+
+# 2018-01-03 OSSFuzz discovers another test case for the same problem
+# above.
+#
+do_execsql_test indexexpr-1510 {
+  DROP TABLE IF EXISTS t1;
+  CREATE TABLE t1(a PRIMARY KEY,b UNIQUE);
+  REPLACE INTO t1 VALUES(2, 1);
+  REPLACE INTO t1 SELECT 6,1;
+  CREATE INDEX t1aa ON t1(a-a);
+  REPLACE INTO t1 SELECT a, randomblob(a) FROM t1
+} {}
+
+# 2018-01-31 https://www.sqlite.org/src/tktview/343634942dd54ab57b702411
+# When an index on an expression depends on the string representation of
+# a numeric table column, trouble can arise since there are multiple
+# string that can map to the same numeric value.  (Ex: 123, 0123, 000123).
+#
+do_execsql_test indexexpr-1600 {
+  DROP TABLE IF EXISTS t1;
+  CREATE TABLE t1 (a INTEGER, b);
+  CREATE INDEX idx1 ON t1 (lower(a));
+  INSERT INTO t1 VALUES('0001234',3);
+  PRAGMA integrity_check;
+} {ok}
+do_execsql_test indexexpr-1610 {
+  INSERT INTO t1 VALUES('1234',0),('001234',2),('01234',1);
+  SELECT b FROM t1 WHERE lower(a)='1234' ORDER BY +b;
+} {0 1 2 3}
+do_execsql_test indexexpr-1620 {
+  SELECT b FROM t1 WHERE lower(a)='01234' ORDER BY +b;
+} {}
+
+# 2019-08-09 https://www.sqlite.org/src/info/9080b6227fabb466
+# ExprImpliesExpr theorem prover bug:
+# "(NULL IS FALSE) IS FALSE" does not imply "NULL IS NULL"
+#
+do_execsql_test indexexpr-1700 {
+  DROP TABLE IF EXISTS t0;
+  CREATE TABLE t0(c0);
+  INSERT INTO t0(c0) VALUES (0);
+  CREATE INDEX i0 ON t0(NULL > c0) WHERE (NULL NOT NULL);
+  SELECT * FROM t0 WHERE ((NULL IS FALSE) IS FALSE);
+} {0}
+
+# 2019-09-02 https://www.sqlite.org/src/tktview/57af00b6642ecd6848
+# When the expression of an an index-on-expression references a
+# table column of type REAL that is actually holding an MEM_IntReal
+# value, be sure to use the REAL value and not the INT value when
+# computing the expression.
+#
+ifcapable like_match_blobs {
+  do_execsql_test indexexpr-1800 {
+    DROP TABLE IF EXISTS t0;
+    CREATE TABLE t0(c0 REAL, c1 TEXT);
+    CREATE INDEX i0 ON t0(+c0, c0);
+    INSERT INTO t0(c0) VALUES(0);
+    SELECT CAST(+ t0.c0 AS BLOB) LIKE 0 FROM t0; 
+  } {0}
+  do_execsql_test indexexpr-1810 {
+    SELECT CAST(+ t0.c0 AS BLOB) LIKE '0.0' FROM t0; 
+  } {1}
+  do_execsql_test indexexpr-1820 {
+    DROP TABLE IF EXISTS t1;
+    CREATE TABLE t1(x REAL);
+    CREATE INDEX t1x ON t1(x, +x);
+    INSERT INTO t1(x) VALUES(2);
+    SELECT +x FROM t1 WHERE x=2;
+  } {2.0}
+}
+
+finish_test
-- 
cgit v1.2.3-70-g09d2