PagerUtilsTest_Limit_SQLServer_1.java

package com.alibaba.druid.bvt.sql;

import junit.framework.TestCase;

import org.junit.Assert;

import com.alibaba.druid.sql.PagerUtils;
import com.alibaba.druid.util.JdbcConstants;

public class PagerUtilsTest_Limit_SQLServer_1 extends TestCase {

    public void test_db2_union() throws Exception {
        String sql = "select * from t1 union select * from t2";
        String result = PagerUtils.limit(sql, JdbcConstants.SQL_SERVER, 20, 10);
        Assert.assertEquals("SELECT *" //
                            + "\nFROM (SELECT XX.*, ROW_NUMBER() OVER () AS ROWNUM" //
                            + "\n\tFROM (SELECT *" //
                            + "\n\t\tFROM t1" //
                            + "\n\t\tUNION" //
                            + "\n\t\tSELECT *" //
                            + "\n\t\tFROM t2" //
                            + "\n\t\t) XX" //
                            + "\n\t) XXX" //
                            + "\nWHERE ROWNUM > 20" //
                            + "\n\tAND ROWNUM <= 30", result);
    }
}