sql parser improve sql server support

2023-03-04 19:17:16 +00:00 · 2013-01-12 16:03:15 +08:00
parent 60ea70b09d
commit b503104bec
12 changed files with 298 additions and 83 deletions
@@ -0,0 +1,62 @@
+/*
+ * 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.sqlserver;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.sqlserver.parser.SQLServerStatementParser;
+import com.alibaba.druid.sql.test.TestUtils;
+
+public class SQLServerUpdateTest extends TestCase {
+
+    public void test_isEmpty() throws Exception {
+        String sql = "update reg_student_charge_item " + //
+                     "set FAmountReceived = b.amount   " + //
+                     "from reg_student_charge_item a" + //
+                     "    ,(" + //
+                     "          select a.FId,      " + //
+                     "                   case when sum(b.FChargeAmount) is null then 0 " + //
+                     "                        else sum(b.FChargeAmount)" + //
+                     "                   end as amount " + //
+                     "           from reg_student_charge_item a " + //
+                     "           left join reg_student_charge_daybook b on a.FId = b.FChargeItemId" + //
+                     "           where a.FId=?    group by a.FId" + //
+                     "     ) b " + //
+                     "where a.FId = b.FId and a.FId = ?";
+
+        String expect = "UPDATE reg_student_charge_item" +
+        		"\nSET FAmountReceived = b.amount" +
+        		"\nFROM reg_student_charge_item a, (SELECT a.FId, CASE WHEN SUM(b.FChargeAmount) IS NULL THEN 0 ELSE SUM(b.FChargeAmount) END AS amount" +
+        		"\n\t\tFROM reg_student_charge_item a" +
+        		"\n\t\t\tLEFT JOIN reg_student_charge_daybook b ON a.FId = b.FChargeItemId" +
+        		"\n\t\tWHERE a.FId = ? GROUP BY a.FId" +
+        		"\n\t\t) b" +
+        		"\nWHERE a.FId = b.FId" +
+        		"\nAND a.FId = ?";
+
+        SQLServerStatementParser parser = new SQLServerStatementParser(sql);
+        SQLStatement stmt = parser.parseStatementList().get(0);
+
+        String text = TestUtils.outputSqlServer(stmt);
+
+        Assert.assertEquals(expect, text);
+
+        System.out.println(text);
+    }
+}