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- Blaine Simpson
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package org.hsqldb.test;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import junit.framework.TestCase;
import junit.framework.TestResult;
HSQLDB TestLikePredicate Junit test case.
Author: Campbell Burnet (campbell-burnet@users dot sourceforge.net) Version: 1.9.0 Since: 1.7.2
/**
* HSQLDB TestLikePredicate Junit test case. <p>
*
* @author Campbell Burnet (campbell-burnet@users dot sourceforge.net)
* @version 1.9.0
* @since 1.7.2
*/
public class TestLikePredicateOptimizations extends TestBase {
public TestLikePredicateOptimizations(String name) {
super(name);
}
/* Implements the TestLikePredicate test */
public void test() throws Exception {
Connection conn = newConnection();
Statement stmt = conn.createStatement();
PreparedStatement pstmt;
ResultSet rs;
String sql;
int expectedCount;
int actualCount;
stmt.execute("drop table test if exists");
stmt.execute("drop table empty if exists");
sql = "create table test(name varchar(255))";
stmt.execute(sql);
sql = "create index idx on test(name)";
stmt.execute(sql);
sql = "create table empty(name varchar(255))";
stmt.execute(sql);
sql = "insert into empty values 'name10'";
stmt.execute(sql);
sql = "insert into empty values 'name11'";
stmt.execute(sql);
sql = "insert into test values(?)";
pstmt = conn.prepareStatement(sql);
for (int i = 0; i < 10000; i++) {
pstmt.setString(1, "name" + i);
pstmt.addBatch();
}
pstmt.executeBatch();
sql = "select TOP 20 * from test where name like '%me4%' order by name";
rs = stmt.executeQuery(sql);
int countOne = 0;
int countTwo = 0;
while (rs.next()) {
countOne++;
}
sql = "select TOP 20 * from test where name like ? order by name";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, "%me4%");
rs = pstmt.executeQuery();
while (rs.next()) {
countTwo++;
}
assertEquals("\"" + sql + "\"", countOne, countTwo );
//
sql = "select count(*) from test where name = (select max(name) from empty)";
rs = stmt.executeQuery(sql);
rs.next();
expectedCount = rs.getInt(1);
sql = "select count(*) from test where name like (select min(name) from empty)";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
rs.next();
actualCount = rs.getInt(1);
assertEquals("\"" + sql + "\"", expectedCount, actualCount);
sql = "select count(*) from test where (select max(name) from empty where empty.name = test.name and empty.name > ?) like '%ame11%'";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, "n");
rs = pstmt.executeQuery();
rs.next();
actualCount = rs.getInt(1);
assertEquals("\"" + sql + "\"", expectedCount, actualCount);
// --
sql = "select count(*) from test where name = ''";
rs = stmt.executeQuery(sql);
rs.next();
expectedCount = rs.getInt(1);
sql = "select count(*) from test where name like ''";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
rs.next();
actualCount = rs.getInt(1);
assertEquals("\"" + sql + "\"", expectedCount, actualCount);
// --
sql = "SELECT t.name FROM test t WHERE ((SELECT t2.name from test t2 where t2.name=?) like '%name5000%')";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, "name5000");
rs = pstmt.executeQuery();
assertEquals(rs.next(), true);
String actual = rs.getString(1);
assertEquals(actual, "name0");
// --
// --
sql = "select count(*) from test where name is not null";
rs = stmt.executeQuery(sql);
rs.next();
expectedCount = rs.getInt(1);
sql = "select count(*) from test where name like '%'";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
rs.next();
actualCount = rs.getInt(1);
assertEquals("\"" + sql + "\"", expectedCount, actualCount);
// --
sql = "select count(*) from test where substring(name from 1 for 6) = 'name44'";
rs = stmt.executeQuery(sql);
rs.next();
expectedCount = rs.getInt(1);
sql = "select count(*) from test where name like 'name44%'";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
rs.next();
actualCount = rs.getInt(1);
assertEquals("\"" + sql + "\"", expectedCount, actualCount);
// --
sql = "select count(*) from test where left(name,5) = 'name4' and right(name,1) = '5'";
rs = stmt.executeQuery(sql);
rs.next();
expectedCount = rs.getInt(1);
sql = "select count(*) from test where name like 'name4%5'";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
rs.next();
actualCount = rs.getInt(1);
assertEquals("\"" + sql + "\"", expectedCount, actualCount);
sql = "select count(*) from test";
rs = stmt.executeQuery(sql);
rs.next();
expectedCount = rs.getInt(1);
sql = "select count(*) from test where name like '%'";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
rs.next();
actualCount = rs.getInt(1);
assertEquals("\"" + sql + "\"", expectedCount, actualCount);
// --
String result = "true";
String presult = "false";
stmt.execute("drop table test1 if exists");
sql = "CREATE TABLE test1 (col CHAR(30))";
pstmt = conn.prepareStatement(sql);
pstmt.execute();
sql = "INSERT INTO test1 (col) VALUES ('one')";
pstmt = conn.prepareStatement(sql);
pstmt.execute();
sql = "SELECT * FROM test1 WHERE ( col LIKE ? )";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, "on%");
rs = pstmt.executeQuery();
if (rs.next()) {
presult = rs.getString("COL");
}
sql = "SELECT * FROM test1 WHERE ( col LIKE 'one' )";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
if (rs.next()) {
result = rs.getString("COL");
}
assertEquals("\"" + sql + "\"", result, presult);
sql = "SELECT * FROM test1 WHERE ( col LIKE 'one' ESCAPE CAST(? AS CHAR) )";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, "%");
rs = pstmt.executeQuery();
if (rs.next()) {
result = rs.getString("COL");
}
assertEquals("\"" + sql + "\"", result, presult);
sql = "SELECT * FROM test1 WHERE ( col LIKE 'one' ESCAPE ? )";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, "%");
rs = pstmt.executeQuery();
if (rs.next()) {
result = rs.getString("COL");
}
assertEquals("\"" + sql + "\"", result, presult);
}
/* Runs TestLikePredicate test from the command line*/
public static void main(String[] args) throws Exception {
TestResult result;
TestCase test;
java.util.Enumeration failures;
int count;
result = new TestResult();
test = new TestLikePredicateOptimizations("test");
test.run(result);
count = result.failureCount();
System.out.println("TestLikePredicateOptimizations failure count: "
+ count);
failures = result.failures();
while (failures.hasMoreElements()) {
System.out.println(failures.nextElement());
}
}
}