MySqlSelectTest_33.java

/*
 * Copyright 1999-2017 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.select;

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;
import org.junit.Assert;

import java.util.List;

public class MySqlSelectTest_33 extends MysqlTest {

    public void test_0() throws Exception {
        String sql = "select COUNT() AS count,\n" +
                "DATE_FORMAT(DATE(reg_time), '%Y-%m-%d') AS date,\n" +
                "(HOUR(reg_time) DIV 2) as intervalTime\n" +
                "FROM USER_RECOMMEND_INFO WHERE 1=1\n" +
                "and reg_time >='2016-12-01 00:00:00'\n" +
                "and reg_time <='2016-12-01 23:59:59'\n" +
                "group by DATE(reg_time),HOUR(reg_time) DIV 2";

        
        MySqlStatementParser parser = new MySqlStatementParser(sql);
        List<SQLStatement> statementList = parser.parseStatementList();
        SQLStatement stmt = statementList.get(0);
//        print(statementList);

        Assert.assertEquals(1, statementList.size());

        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
        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(1, visitor.getColumns().size());
//        Assert.assertEquals(0, visitor.getConditions().size());
//        Assert.assertEquals(0, visitor.getOrderByColumns().size());
        
        {
            String output = SQLUtils.toMySqlString(stmt);
            Assert.assertEquals("SELECT COUNT() AS count, DATE_FORMAT(DATE(reg_time), '%Y-%m-%d') AS date, HOUR(reg_time) DIV 2 AS intervalTime\n" +
                            "FROM USER_RECOMMEND_INFO\n" +
                            "WHERE 1 = 1\n" +
                            "\tAND reg_time >= '2016-12-01 00:00:00'\n" +
                            "\tAND reg_time <= '2016-12-01 23:59:59'\n" +
                            "GROUP BY DATE(reg_time), HOUR(reg_time) DIV 2", //
                                output);
        }
        {
            String output = SQLUtils.toMySqlString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
            Assert.assertEquals("select count() as count, DATE_FORMAT(DATE(reg_time), '%Y-%m-%d') as date, HOUR(reg_time) div 2 as intervalTime\n" +
                            "from USER_RECOMMEND_INFO\n" +
                            "where 1 = 1\n" +
                            "\tand reg_time >= '2016-12-01 00:00:00'\n" +
                            "\tand reg_time <= '2016-12-01 23:59:59'\n" +
                            "group by DATE(reg_time), HOUR(reg_time) div 2", //
                                output);
        }
    }
    
    
    
}