org.hsqldb.test.TestSubQueriesInPreparedStatements Maven / Gradle / Ivy
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/*
* TestSubQueriesInPreparedStatements.java
*
* Created on July 9, 2003, 4:03 PM
*/
package org.hsqldb.test;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
/**
*
* @author boucherb@users
*/
public class TestSubQueriesInPreparedStatements {
public static void main(String[] args) throws Exception {
test();
}
public static void test() throws Exception {
Connection conn;
Statement stmnt;
PreparedStatement pstmnt;
Driver driver;
driver =
(Driver) Class.forName("org.hsqldb.jdbc.JDBCDriver").newInstance();
DriverManager.registerDriver(driver);
conn = DriverManager.getConnection("jdbc:hsqldb:mem:test", "sa", "");
stmnt = conn.createStatement();
pstmnt = conn.prepareStatement("drop table t if exists");
boolean result = pstmnt.execute();
pstmnt = conn.prepareStatement("create table t(i decimal)");
int updatecount = pstmnt.executeUpdate();
pstmnt = conn.prepareStatement("insert into t values(?)");
for (int i = 0; i < 100; i++) {
pstmnt.setInt(1, i);
pstmnt.executeUpdate();
}
pstmnt = conn.prepareStatement(
"select * from (select * from t where i < ?)");
System.out.println("Expecting: 0..3");
pstmnt.setInt(1, 4);
ResultSet rs = pstmnt.executeQuery();
while (rs.next()) {
System.out.println(rs.getInt(1));
}
System.out.println("Expecting: 0..4");
pstmnt.setInt(1, 5);
rs = pstmnt.executeQuery();
while (rs.next()) {
System.out.println(rs.getInt(1));
}
pstmnt = conn.prepareStatement(
"select sum(i) from (select i from t where i between ? and ?)");
System.out.println("Expecting: 9");
pstmnt.setInt(1, 4);
pstmnt.setInt(2, 5);
rs = pstmnt.executeQuery();
while (rs.next()) {
System.out.println(rs.getInt(1));
}
System.out.println("Expecting: 15");
pstmnt.setInt(2, 6);
rs = pstmnt.executeQuery();
while (rs.next()) {
System.out.println(rs.getInt(1));
}
pstmnt = conn.prepareStatement(
"select * from (select i as c1 from t where i < ?) a, (select i as c2 from t where i < ?) b");
System.out.println("Expecting: (0,0)");
pstmnt.setInt(1, 1);
pstmnt.setInt(2, 1);
rs = pstmnt.executeQuery();
while (rs.next()) {
System.out.println("(" + rs.getInt(1) + "," + rs.getInt(2) + ")");
}
System.out.println("Expecting: ((0,0), (0,1), (1,0), (1,1)");
pstmnt.setInt(1, 2);
pstmnt.setInt(2, 2);
rs = pstmnt.executeQuery();
while (rs.next()) {
System.out.println("(" + rs.getInt(1) + "," + rs.getInt(2) + ")");
}
System.out.println("Expecting: ((0,0) .. (3,3)");
pstmnt.setInt(1, 4);
pstmnt.setInt(2, 4);
rs = pstmnt.executeQuery();
while (rs.next()) {
System.out.println("(" + rs.getInt(1) + "," + rs.getInt(2) + ")");
}
}
}
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