From bf6480ba7c726a48eab443559f14a8014c9e6ec9 Mon Sep 17 00:00:00 2001
From: unknown <bar@bar.mysql.r18.ru>
Date: Mon, 15 Sep 2003 10:26:48 +0500
Subject: [PATCH] New syntax:

CREATE TABLE t1(a NVARCHAR(10))
This is for compatibility with MSSQL, DB2, Informix and some other DBMSs.

Note, standard SQL doesn't have "NVARCHAR" syntax.
There are only these syntaxes in SQL2003:
 NATIONAL VARCHAR
 NCHAR VARCHAR
 NATIONAL CHARACTER VARYING
 NCHAR VARYING

- Tests were added for all the above syntaxes.


sql/lex.h:
  New syntax:

  CREATE TABLE t1(a NVARCHAR(10))
  This is for compatibility with MSSQL, DB2, Informix and some other DBMSs.

  Note, standard SQL doesn't have "NVARCHAR" syntax.
  There are only these syntaxes in SQL2003:
   NATIONAL VARCHAR
   NCHAR VARCHAR
   NATIONAL CHARACTER VARYING
   NCHAR VARYING
sql/sql_yacc.yy:
  New syntax:

  CREATE TABLE t1(a NVARCHAR(10))
  This is for compatibility with MSSQL, DB2, Informix and some other DBMSs.

  Note, standard SQL doesn't have "NVARCHAR" syntax.
  There are only these syntaxes in SQL2003:
   NATIONAL VARCHAR
   NCHAR VARCHAR
   NATIONAL CHARACTER VARYING
   NCHAR VARYING
---
 mysql-test/r/type_nchar.result |  0
 mysql-test/t/type_nchar.test   | 35 ++++++++++++++++++++++++++++++++++
 sql/lex.h                      |  1 +
 sql/sql_yacc.yy                |  3 +++
 4 files changed, 39 insertions(+)
 create mode 100644 mysql-test/r/type_nchar.result
 create mode 100644 mysql-test/t/type_nchar.test

diff --git a/mysql-test/r/type_nchar.result b/mysql-test/r/type_nchar.result
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/mysql-test/t/type_nchar.test b/mysql-test/t/type_nchar.test
new file mode 100644
index 00000000000..e85609e3f0c
--- /dev/null
+++ b/mysql-test/t/type_nchar.test
@@ -0,0 +1,35 @@
+#
+# Test nchar/nvarchar
+#
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+create table t1 (c nchar(10));
+show create table t1;
+drop table t1;
+
+create table t1 (c national char(10));
+show create table t1;
+drop table t1;
+
+create table t1 (c national varchar(10));
+show create table t1;
+drop table t1;
+
+create table t1 (c nvarchar(10));
+show create table t1;
+drop table t1;
+
+create table t1 (c nchar varchar(10));
+show create table t1;
+drop table t1;
+
+create table t1 (c national character varying(10));
+show create table t1;
+drop table t1;
+
+create table t1 (c nchar varying(10));
+show create table t1;
+drop table t1;
+
diff --git a/sql/lex.h b/sql/lex.h
index fb3c018de42..e11b50ed16d 100644
--- a/sql/lex.h
+++ b/sql/lex.h
@@ -293,6 +293,7 @@ static SYMBOL symbols[] = {
   { "NOT",		SYM(NOT),0,0},
   { "NULL",		SYM(NULL_SYM),0,0},
   { "NUMERIC",		SYM(NUMERIC_SYM),0,0},
+  { "NVARCHAR",		SYM(NVARCHAR_SYM),0,0},
   { "OFFSET",		SYM(OFFSET_SYM),0,0},
   { "OLD_PASSWORD",	SYM(OLD_PASSWORD),0,0},
   { "ON",		SYM(ON),0,0},
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index 54d708fef04..2a35c03f3b4 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -302,6 +302,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
 %token	NEW_SYM
 %token	NCHAR_SYM
 %token	NCHAR_STRING
+%token  NVARCHAR_SYM
 %token	NOT
 %token	NO_SYM
 %token	NULL_SYM
@@ -1339,6 +1340,7 @@ varchar:
 
 nvarchar:
 	NATIONAL_SYM VARCHAR {}
+	| NVARCHAR_SYM {}
 	| NCHAR_SYM VARCHAR {}
 	| NATIONAL_SYM CHAR_SYM VARYING {}
 	| NCHAR_SYM VARYING {}
@@ -4568,6 +4570,7 @@ keyword:
 	| NEW_SYM		{}
 	| NO_SYM		{}
 	| NONE_SYM		{}
+	| NVARCHAR_SYM		{}
 	| OFFSET_SYM		{}
 	| OLD_PASSWORD		{}
 	| OPEN_SYM		{}