package com.alipay.zdal.parser.druid.bvt.sql.oracle;
import junit.framework.Assert;
import junit.framework.TestCase;
import com.alipay.zdal.parser.druid.sql.test.TestUtils;
import com.alipay.zdal.parser.sql.ast.statement.SQLSelectStatement;
import com.alipay.zdal.parser.sql.dialect.oracle.parser.OracleStatementParser;
/**
*
* @author xiaoqing.zhouxq
* @version $Id: OracleSubqueryFactoringTest.java, v 0.1 2012-5-17 ����10:22:22 xiaoqing.zhouxq Exp $
*/
public class OracleSubqueryFactoringTest extends TestCase {
public void test_interval() throws Exception {
String sql = "WITH dept_costs AS (\n"
+ "SELECT department_name, SUM(salary) dept_total\n"
+ "FROM employees e, departments d\n"
+ "WHERE e.department_id = d.department_id\n"
+ "GROUP BY department_name), "
+ "avg_cost AS (SELECT SUM(dept_total)/COUNT(*) avg FROM dept_costs)\n"
+ "SELECT * FROM dept_costs WHERE dept_total > (SELECT avg FROM avg_cost) ORDER BY department_name;";
String expected = "WITH\n" + "\tdept_costs\n" + "\tAS\n" + "\t(\n"
+ "\t\tSELECT department_name, SUM(salary) AS dept_total\n"
+ "\t\tFROM employees e, departments d\n"
+ "\t\tWHERE e.department_id = d.department_id\n"
+ "\t\tGROUP BY department_name\n" + "\t), \n" + "\tavg_cost\n"
+ "\tAS\n" + "\t(\n" + "\t\tSELECT SUM(dept_total) / COUNT(*) AS avg\n"
+ "\t\tFROM dept_costs\n" + "\t)\n" + "SELECT *\n" + "FROM dept_costs\n"
+ "WHERE dept_total > (\n" + "\tSELECT avg\n" + "\tFROM avg_cost\n"
+ "\t)\n" + "ORDER BY department_name;\n";
OracleStatementParser parser = new OracleStatementParser(sql);
SQLSelectStatement stmt = (SQLSelectStatement) parser.parseStatementList().get(0);
String text = TestUtils.outputOracle(stmt);
Assert.assertEquals(expected, text);
System.out.println(text);
}
}