db2 sql parser support concat binary operator

2023-03-04 19:17:16 +00:00 · 2016-05-06 16:50:05 +08:00
parent 8cdad2dad0
commit 2fb9763c77
6 changed files with 118 additions and 2 deletions
@@ -0,0 +1,100 @@
+/*
+ * 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.db2;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.DB2Test;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.db2.parser.DB2StatementParser;
+import com.alibaba.druid.sql.dialect.db2.visitor.DB2SchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+import com.alibaba.druid.stat.TableStat.Column;
+import com.alibaba.druid.util.JdbcConstants;
+
+public class DB2SelectTest_11 extends DB2Test {
+
+    public void test_0() throws Exception {
+        String sql = "SELECT A.F_0201, A.F_0301, A.F_0802, A.F_2100"
+                + "\nFROM A, B"
+                + "\nWHERE B.F_2211 = '5'"
+                + "\n    AND A.F_0301 = B.F_0301"
+                + "    AND Substr(B.F_0815, 1, 4) concat  Substr ( B.F_0815,5,2 ) > A.F_0802"
+                + "    AND A.F_2100 > 0"
+                + "\nUNION"
+                + "\nSELECT A.F_0201, A.F_0301, A.F_0802, A.F_2100"
+                + "\nFROM A"
+                + "\nWHERE A.F_0301 NOT IN (SELECT F_0301"
+                + "\n        FROM B)"
+                + "\n    AND A.F_2100 > 0";
+
+        DB2StatementParser parser = new DB2StatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        DB2SchemaStatVisitor visitor = new DB2SchemaStatVisitor();
+        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(2, visitor.getTables().size());
+        Assert.assertEquals(7, visitor.getColumns().size());
+        Assert.assertEquals(6, visitor.getConditions().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("A")));
+
+         Assert.assertTrue(visitor.getColumns().contains(new Column("A", "F_0201")));
+        // Assert.assertTrue(visitor.getColumns().contains(new Column("mytable", "first_name")));
+        // Assert.assertTrue(visitor.getColumns().contains(new Column("mytable", "full_name")));
+
+        Assert.assertEquals("SELECT A.F_0201, A.F_0301, A.F_0802, A.F_2100"
+                + "\nFROM A, B"
+                + "\nWHERE B.F_2211 = '5'"
+                + "\n\tAND A.F_0301 = B.F_0301"
+                + "\n\tAND (Substr(B.F_0815, 1, 4) CONCAT Substr(B.F_0815, 5, 2)) > A.F_0802"
+                + "\n\tAND A.F_2100 > 0"
+                + "\nUNION"
+                + "\nSELECT A.F_0201, A.F_0301, A.F_0802, A.F_2100"
+                + "\nFROM A"
+                + "\nWHERE A.F_0301 NOT IN (SELECT F_0301"
+                + "\n\t\tFROM B)"
+                + "\n\tAND A.F_2100 > 0", //
+                            SQLUtils.toSQLString(stmt, JdbcConstants.DB2));
+        
+        Assert.assertEquals("select A.F_0201, A.F_0301, A.F_0802, A.F_2100"
+                + "\nfrom A, B"
+                + "\nwhere B.F_2211 = '5'"
+                + "\n\tand A.F_0301 = B.F_0301"
+                + "\n\tand (Substr(B.F_0815, 1, 4) concat Substr(B.F_0815, 5, 2)) > A.F_0802"
+                + "\n\tand A.F_2100 > 0"
+                + "\nunion"
+                + "\nselect A.F_0201, A.F_0301, A.F_0802, A.F_2100"
+                + "\nfrom A"
+                + "\nwhere A.F_0301 not in (select F_0301"
+                + "\n\t\tfrom B)"
+                + "\n\tand A.F_2100 > 0", //
+                            SQLUtils.toSQLString(stmt, JdbcConstants.DB2, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
+    }
+}