fix unique bug

src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java

@@ -1516,7 +1516,7 @@ public SQLColumnDefinition parseColumnRest(SQLColumnDefinition column) {
             if (lexer.token() == Token.KEY) {
                 lexer.nextToken();
             }
-            column.getConstraints().add(new SQLColumnPrimaryKey());
+            column.getConstraints().add(new SQLColumnUniqueKey());
             return parseColumnRest(column);
         }
 

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlCreateTableTest49.java

@@ -56,7 +56,7 @@ public void test_0() throws Exception {
 
         String output = SQLUtils.toMySqlString(stmt);
         Assert.assertEquals("CREATE TABLE tauth (" //
-                            + "\n\tcid varchar(36) NOT NULL PRIMARY KEY, "//
+                            + "\n\tcid varchar(36) NOT NULL UNIQUE, "//
                             + "\n\tcdesc varchar(200), "//
                             + "\n\tcname varchar(100) NOT NULL, "//
                             + "\n\tcseq decimal(22, 0), "//

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlCreateTableTest58.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.mysql;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+
+public class MySqlCreateTableTest58 extends MysqlTest {
+
+    @Test
+    public void test_one() throws Exception {
+        String sql = "CREATE TABLE `appservice_account` (" + "`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,"
+                     + "`password` varchar(128) NOT NULL," + "`last_login` datetime NOT NULL,"
+                     + "`username` varchar(40) NOT NULL UNIQUE," + "`date_of_birth` date NOT NULL,"
+                     + "`head` varchar(100) NOT NULL," + "`headThumb` varchar(100) NOT NULL,"
+                     + "`name` varchar(50) NOT NULL," + "`gender` integer," + "`uploadVideoCount` integer NOT NULL,"
+                     + "`fansCount` integer NOT NULL," + "`balance` numeric(19, 2) NOT NULL,"
+                     + "`brick` integer NOT NULL," + "`reward` integer NOT NULL," + "`token` varchar(500) NOT NULL,"
+                     + "`weiboUserid` varchar(50) NOT NULL," + "`weiboAccesstoken` varchar(500) NOT NULL,"
+                     + "`qqUserid` varchar(50) NOT NULL," + "`qqAccesstoken` varchar(500) NOT NULL,"
+                     + "`wechatUserid` varchar(50) NOT NULL," + "`wechatAccesstoken` varchar(500) NOT NULL,"
+                     + "`is_active` bool NOT NULL," + "`is_admin` bool NOT NULL" + ")";
+
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        SQLStatement stmt = parser.parseCreateTable();
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        String output = SQLUtils.toMySqlString(stmt);
+        Assert.assertEquals("CREATE TABLE `appservice_account` (" + "\n\t`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, "
+                + "\n\t`password` varchar(128) NOT NULL, " + "\n\t`last_login` datetime NOT NULL, "
+                + "\n\t`username` varchar(40) NOT NULL UNIQUE, " + "\n\t`date_of_birth` date NOT NULL, "
+                + "\n\t`head` varchar(100) NOT NULL, " + "\n\t`headThumb` varchar(100) NOT NULL, "
+                + "\n\t`name` varchar(50) NOT NULL, " + "\n\t`gender` integer, " + "\n\t`uploadVideoCount` integer NOT NULL, "
+                + "\n\t`fansCount` integer NOT NULL, " + "\n\t`balance` numeric(19, 2) NOT NULL, "
+                + "\n\t`brick` integer NOT NULL, " + "\n\t`reward` integer NOT NULL, " + "\n\t`token` varchar(500) NOT NULL, "
+                + "\n\t`weiboUserid` varchar(50) NOT NULL, " + "\n\t`weiboAccesstoken` varchar(500) NOT NULL, "
+                + "\n\t`qqUserid` varchar(50) NOT NULL, " + "\n\t`qqAccesstoken` varchar(500) NOT NULL, "
+                + "\n\t`wechatUserid` varchar(50) NOT NULL, " + "\n\t`wechatAccesstoken` varchar(500) NOT NULL, "
+                + "\n\t`is_active` bool NOT NULL, " + "\n\t`is_admin` bool NOT NULL" + "\n)",output);
+
+    }
+}