change connection schema after USE is executed

[gfunc]

Summary

enable USE database; statement for JDBC V2
Closes #2137

Checklist

Delete items not relevant to your PR:

• Closes #2137
• Unit and integration tests covering the common scenarios were added

[chernser]

Good day, @gfunc !
Thank you for the wonderful contribution! We will review it shortly!

[chernser]

@gfunc
The tests have failed:

java.sql.SQLException: Code: 57. DB::Exception: Table clickhouse_java_152aac8b_test_1739292947239.strings already exists. (TABLE_ALREADY_EXISTS) (version 23.8.16.16 (official build)) 
	at com.clickhouse.jdbc.internal.ExceptionUtils.toSqlState(ExceptionUtils.java:64)
	at com.clickhouse.jdbc.internal.ExceptionUtils.toSqlState(ExceptionUtils.java:39)
	at com.clickhouse.jdbc.StatementImpl.executeUpdate(StatementImpl.java:237)
	at com.clickhouse.jdbc.StatementImpl.executeUpdate(StatementImpl.java:204)
	at com.clickhouse.jdbc.StatementTest.testSwitchDatabase(StatementTest.java:548)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:136)
	at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:658)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:219)
	at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:50)
	at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:923)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:192)
	at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
	at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:128)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at org.testng.TestRunner.privateRun(TestRunner.java:808)
	at org.testng.TestRunner.run(TestRunner.java:603)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:429)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:423)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:383)
	at org.testng.SuiteRunner.run(SuiteRunner.java:326)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:95)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1249)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1169)
	at org.testng.TestNG.runSuites(TestNG.java:1092)
	at org.testng.TestNG.run(TestNG.java:1060)
	at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:155)
	at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeMulti(TestNGDirectoryTestSuite.java:169)
	at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:88)
	at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:137)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:385)
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)
	at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:507)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:495)
Caused by: com.clickhouse.client.api.ServerException: Code: 57. DB::Exception: Table clickhouse_java_152aac8b_test_1739292947239.strings already exists. (TABLE_ALREADY_EXISTS) (version 23.8.16.16 (official build)) 
	at com.clickhouse.client.api.internal.HttpAPIClientHelper.readError(HttpAPIClientHelper.java:364)
	at com.clickhouse.client.api.internal.HttpAPIClientHelper.executeRequest(HttpAPIClientHelper.java:414)
	at com.clickhouse.client.api.Client.lambda$query$10(Client.java:1[623](https://github.com/ClickHouse/clickhouse-java/actions/runs/13260591506/job/37040964375?pr=2138#step:7:624))
	at com.clickhouse.client.api.Client.runAsyncOperation(Client.java:2006)
	at com.clickhouse.client.api.Client.query(Client.java:1666)
	at com.clickhouse.client.api.Client.query(Client.java:1564)
	at com.clickhouse.jdbc.StatementImpl.executeUpdate(StatementImpl.java:230)

Would you please take a look?

[gfunc]

Hi @chernser, Thanks for your lightning-fast response!
I've run the test added with multiple versions of ClickHouse before this PR in Intellij and JDK17, and will take a detailed look at the GitHub workflow and run these test locally

[gfunc]

fixed by renaming table and database.