- Fix MDEV-9779. Connection was not recognized in the option list.

  This was a regression bug.
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/mysql-test/connect/r/part_table.result
  modified:   storage/connect/mysql-test/connect/t/part_table.test

storage/connect/ha_connect.cc

@@ -1150,7 +1150,7 @@ char *ha_connect::GetRealString(const char *s)
 {
   char *sv;
 
-  if (IsPartitioned() && s) {
+  if (IsPartitioned() && s && partname && *partname) {
     sv= (char*)PlugSubAlloc(xp->g, NULL, 0);
     sprintf(sv, s, partname);
     PlugSubAlloc(xp->g, NULL, strlen(sv) + 1);
@@ -1173,7 +1173,9 @@ char *ha_connect::GetStringOption(char *opname, char *sdef)
                            : table->s->connect_string;
 
     if (cnc.length)
-      opval= GetRealString(strz(xp->g, cnc));
+      opval= strz(xp->g, cnc);
+		else
+			opval= GetListOption(xp->g, opname, options->oplist);
 
   } else if (!stricmp(opname, "Query_String"))
     opval= thd_query_string(table->in_use)->str;

storage/connect/mysql-test/connect/r/part_table.result

@@ -191,6 +191,31 @@ id	msg
 35	thirty five
 81	big
 DROP TABLE t1;
+CREATE TABLE t1 (
+id INT KEY NOT NULL,
+msg VARCHAR(32))
+ENGINE=CONNECT TABLE_TYPE=MYSQL
+OPTION_LIST='connect=mysql://root@localhost/test/xt%s'
+PARTITION BY RANGE COLUMNS(id) (
+PARTITION `1` VALUES LESS THAN(10),
+PARTITION `2` VALUES LESS THAN(50),
+PARTITION `3` VALUES LESS THAN(MAXVALUE));
+Warnings:
+Warning	1105	Data repartition in 1 is unchecked
+Warning	1105	Data repartition in 2 is unchecked
+Warning	1105	Data repartition in 3 is unchecked
+SELECT * FROM t1;
+id	msg
+4	four
+7	sept
+1	one
+8	eight
+40	forty
+10	ten
+11	eleven
+35	thirty five
+81	big
+DROP TABLE t1;
 DROP TABLE xt1;
 DROP TABLE xt2;
 DROP TABLE xt3;

storage/connect/mysql-test/connect/t/part_table.test

@@ -82,6 +82,21 @@ SELECT * FROM t1;
 DELETE FROM t1 WHERE id in (60,72);
 SELECT * FROM t1;
 DROP TABLE t1;
+
+#
+# Using a connection string
+#
+CREATE TABLE t1 (
+id INT KEY NOT NULL,
+msg VARCHAR(32))
+ENGINE=CONNECT TABLE_TYPE=MYSQL
+OPTION_LIST='connect=mysql://root@localhost/test/xt%s'
+PARTITION BY RANGE COLUMNS(id) (
+PARTITION `1` VALUES LESS THAN(10),
+PARTITION `2` VALUES LESS THAN(50),
+PARTITION `3` VALUES LESS THAN(MAXVALUE));
+SELECT * FROM t1;
+DROP TABLE t1;
 DROP TABLE xt1;
 DROP TABLE xt2;
 DROP TABLE xt3;