MDEV-13089 identifier quoting in partitioning

remove ANSI_QUOTES when generating partition syntax for frm

mysql-test/suite/parts/r/quoting.result

@@ -60,4 +60,34 @@ t2	CREATE TABLE `t2` (
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
  PARTITION BY RANGE (`f1`)
 (PARTITION `p1` VALUES LESS THAN MAXVALUE ENGINE = MyISAM)
+flush tables;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `select` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+ PARTITION BY RANGE (`select`)
+(PARTITION `select` VALUES LESS THAN MAXVALUE ENGINE = MyISAM)
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `f1` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+ PARTITION BY RANGE (`f1`)
+(PARTITION `p1` VALUES LESS THAN MAXVALUE ENGINE = MyISAM)
+set sql_mode=ansi_quotes;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE "t1" (
+  "select" int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+ PARTITION BY RANGE ("select")
+(PARTITION "select" VALUES LESS THAN MAXVALUE ENGINE = MyISAM)
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE "t2" (
+  "f1" int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+ PARTITION BY RANGE ("f1")
+(PARTITION "p1" VALUES LESS THAN MAXVALUE ENGINE = MyISAM)
 drop table t1, t2;

mysql-test/suite/parts/t/quoting.test

@@ -5,15 +5,28 @@ source include/have_partition.inc;
 set sql_mode=ansi_quotes;
 create table t1 ("select" int) partition by range ("select") (partition "select" values less than maxvalue);
 create table t2 (f1 int) partition by range (f1) (partition p1 values less than maxvalue);
+# "select", "f1", "p1"
 show create table t1;
 show create table t2;
 set sql_quote_show_create=0;
+# "select", f1, p1
 show create table t1;
 show create table t2;
 set sql_mode=default;
+# `select`, f1, p1
 show create table t1;
 show create table t2;
 set sql_quote_show_create=1;
+# `select`, `f1`, `p1`
+show create table t1;
+show create table t2;
+# re-parse
+flush tables;
+# `select`, `f1`, `p1`
+show create table t1;
+show create table t2;
+set sql_mode=ansi_quotes;
+# "select", "f1", "p1"
 show create table t1;
 show create table t2;
 drop table t1, t2;

sql/sql_table.cc

@@ -4543,10 +4543,12 @@ handler *mysql_create_frm_image(THD *thd,
       We reverse the partitioning parser and generate a standard format
       for syntax stored in frm file.
     */
-    if (!(part_syntax_buf= generate_partition_syntax(thd, part_info,
-                                                     &syntax_len, TRUE,
-                                                     create_info,
-                                                     alter_info)))
+    sql_mode_t old_mode= thd->variables.sql_mode;
+    thd->variables.sql_mode &= ~MODE_ANSI_QUOTES;
+    part_syntax_buf= generate_partition_syntax(thd, part_info, &syntax_len,
+                                               true, create_info, alter_info);
+    thd->variables.sql_mode= old_mode;
+    if (!part_syntax_buf)
       goto err;
     part_info->part_info_string= part_syntax_buf;
     part_info->part_info_len= syntax_len;