[sql] Import SQLite 3.17.0.

third_party/sqlite/src/test/instr.test

 # 2012 October 24
 #
 # 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.
 #
 #***********************************************************************
@@ skipping 230 matching lines @@
 do_execsql_test instr-1.60 {
   SELECT coalesce(instr(NULL,'abc'), 999);
 } {999}
 do_execsql_test instr-1.61 {
   SELECT coalesce(instr('abc',NULL), 999);
 } {999}
 do_execsql_test instr-1.62 {
   SELECT coalesce(instr(NULL,NULL), 999);
 } {999}
 
+do_execsql_test instr-1.63 {
+  SELECT instr(X'', 'abc')
+} 0
+do_execsql_test instr-1.64 {
+  CREATE TABLE x1(a, b);
+  INSERT INTO x1 VALUES(X'', 'abc');
+  SELECT instr(a, b) FROM x1;
+} 0
+
 finish_test