From 22f3891d2c5a4335a2e3754a8433a8fe4b9cc0b9 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Sun, 10 Jul 2016 12:59:01 +0800
Subject: [PATCH] support sql-92 datatype 'DOUBLE PRECISION'

---
 .../druid/sql/parser/SQLExprParser.java       |  5 ++
 .../sqlserver/SQLServerCreateTableTest_8.java | 76 +++++++++++++++++++
 2 files changed, 81 insertions(+)
 create mode 100644 src/test/java/com/alibaba/druid/bvt/sql/sqlserver/SQLServerCreateTableTest_8.java

diff --git a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
index 7e04297c9c..139300c3f2 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
@@ -1590,6 +1590,11 @@ public class SQLExprParser extends SQLParser {
             exprList(dataType.getArguments(), dataType);
             accept(Token.RPAREN);
         }
+        
+        if (identifierEquals("PRECISION") && dataType.getName().equalsIgnoreCase("DOUBLE")) {
+            lexer.nextToken();
+            dataType.setName("DOUBLE PRECISION");
+        }
 
         return dataType;
     }
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/sqlserver/SQLServerCreateTableTest_8.java b/src/test/java/com/alibaba/druid/bvt/sql/sqlserver/SQLServerCreateTableTest_8.java
new file mode 100644
index 0000000000..8737f0355b
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/sqlserver/SQLServerCreateTableTest_8.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright 1999-2101 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.sqlserver;
+
+import java.util.List;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
+import com.alibaba.druid.sql.dialect.sqlserver.parser.SQLServerStatementParser;
+import com.alibaba.druid.sql.dialect.sqlserver.visitor.SQLServerSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+import com.alibaba.druid.stat.TableStat.Column;
+import com.alibaba.druid.util.JdbcConstants;
+
+public class SQLServerCreateTableTest_8 extends TestCase {
+
+    public void test_0() throws Exception {
+        String sql = "create table ACT_RU_VARIABLE ("
+                + " ID_ nvarchar(64) not null,"
+                + " DOUBLE_ double precision,"
+                + " LONG_ numeric(19,0),"
+                + " TEXT_ nvarchar(4000),"
+                + " primary key (ID_)"
+                + ")";
+
+        SQLServerStatementParser parser = new SQLServerStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLCreateTableStatement stmt = (SQLCreateTableStatement) statementList.get(0);
+
+        Assert.assertEquals(1, statementList.size());
+
+        String output = SQLUtils.toSQLString(stmt, JdbcConstants.SQL_SERVER);
+        Assert.assertEquals("CREATE TABLE ACT_RU_VARIABLE ("
+                + "\n\tID_ nvarchar(64) NOT NULL,"
+                + "\n\tDOUBLE_ DOUBLE PRECISION,"
+                + "\n\tLONG_ numeric(19, 0),"
+                + "\n\tTEXT_ nvarchar(4000),"
+                + "\n\tPRIMARY KEY (ID_)"
+                + "\n)", output);
+
+        SQLServerSchemaStatVisitor visitor = new SQLServerSchemaStatVisitor();
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+//        System.out.println("orderBy : " + visitor.getOrderByColumns());
+
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(4, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getConditions().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("ACT_RU_VARIABLE")));
+
+        Assert.assertTrue(visitor.getColumns().contains(new Column("ACT_RU_VARIABLE", "ID_")));
+        Assert.assertTrue(visitor.getColumns().contains(new Column("ACT_RU_VARIABLE", "DOUBLE_")));
+    }
+}