sql server support

src/test/java/com/alibaba/druid/bvt/sql/sqlserver/SQLServerTopTest.java

@@ -0,0 +1,26 @@
+package com.alibaba.druid.bvt.sql.sqlserver;
+
+import junit.framework.Assert;
+import junit.framework.TestCase;
+
+import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
+import com.alibaba.druid.sql.dialect.sqlserver.parser.SQLServerStatementParser;
+import com.alibaba.druid.sql.test.TestUtils;
+
+public class SQLServerTopTest extends TestCase {
+
+    public void test_isEmpty() throws Exception {
+        String sql = "SELECT TOP 10 * FROM T";
+
+        String expect = "SELECT TOP 10 *\nFROM T";
+
+        SQLServerStatementParser parser = new SQLServerStatementParser(sql);
+        SQLSelectStatement stmt = (SQLSelectStatement) parser.parseStatementList().get(0);
+
+        String text = TestUtils.outputSqlServer(stmt);
+
+        Assert.assertEquals(expect, text);
+
+        System.out.println(text);
+    }
+}

src/test/java/com/alibaba/druid/sql/test/TestUtils.java

@@ -5,6 +5,7 @@ import java.util.List;
 
 import com.alibaba.druid.sql.ast.SQLStatement;
 import com.alibaba.druid.sql.dialect.oracle.visitor.OracleOutputVisitor;
+import com.alibaba.druid.sql.dialect.sqlserver.visitor.SqlServerOutputVisitor;
 import com.alibaba.druid.sql.visitor.SQLASTOutputVisitor;
 
 
@@ -20,11 +21,26 @@ public class TestUtils {
     
         return out.toString();
     }
+    
+    public static String outputSqlServer(List<SQLStatement> stmtList) {
+        StringBuilder out = new StringBuilder();
+        SqlServerOutputVisitor visitor = new SqlServerOutputVisitor(out);
+        
+        for (SQLStatement stmt : stmtList) {
+            stmt.accept(visitor);
+        }
+        
+        return out.toString();
+    }
 
     public static String outputOracle(SQLStatement... stmtList) {
         return outputOracle(Arrays.asList(stmtList));
     }
     
+    public static String outputSqlServer(SQLStatement... stmtList) {
+        return outputSqlServer(Arrays.asList(stmtList));
+    }
+    
     public static String output(SQLStatement... stmtList) {
         return output(Arrays.asList(stmtList));
     }