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unit Test4;
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{$IFDEF MSWINDOWS}
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{$DEFINE WINDOWS}
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{$ENDIF}
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{$IFDEF FPC}
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{$mode delphi}
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{$codepage utf8}
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{$ENDIF}
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{Test 4: Update, Insert and Delete Queries}
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{ This test opens the employee example databases with the supplied user name/password
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and runs several queries:
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1. Update an employee record and report affected rows.
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2. Show Changed Record
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3. Insert new employee record and report affected rows Repeat with a duplicated
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parameter name.
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4. Show inserted record and then delete it and report affected rows
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5. Repeat insert with a null PHONE_EXT.
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6. Show inserted record and total records
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7. Prepare query again and report results
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8. Prepare query with a different transaction and report results.
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9. Open Cursor with a different transaction and report results.
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10. Implicit Rollback and disconnect.
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}
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interface
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uses
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Classes, SysUtils, TestManager, IB;
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type
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{ TTest4 }
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TTest4 = class(TTestBase)
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private
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procedure DoQuery(Attachment: IAttachment);
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public
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function TestTitle: AnsiString; override;
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procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override;
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end;
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implementation
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{ TTest4 }
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procedure TTest4.DoQuery(Attachment: IAttachment);
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var Transaction, Transaction2, Transaction3: ITransaction;
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Statement: IStatement;
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Rows: IResultSet;
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stats: TPerfCounters;
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begin
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Transaction := Attachment.StartTransaction([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],taRollback);
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Statement := Attachment.Prepare(Transaction,'Update Employee Set Hire_Date = ? Where EMP_NO = ?',3);
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Statement.GetSQLParams[0].AsDAteTime := EncodeDate(2016,1,31);;
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Statement.GetSQLParams[1].AsInteger := 8;
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Statement.Execute;
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WriteAffectedRows(Statement);
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Transaction.Rollback;
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Transaction.Start(TARollback);
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3);
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Statement.EnableStatistics(true);
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 8;
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ReportResults(Statement);
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if Statement.GetPerfStatistics(stats) then
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WritePerfStats(stats);
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'INSERT INTO EMPLOYEE (EMP_NO, FIRST_NAME, LAST_NAME, PHONE_EXT, HIRE_DATE,' +
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'DEPT_NO, JOB_CODE, JOB_GRADE, JOB_COUNTRY, SALARY) '+
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'VALUES (:EMP_NO, :FIRST_NAME, :LAST_NAME, :PHONE_EXT, :HIRE_DATE,' +
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':DEPT_NO, :JOB_CODE, :JOB_GRADE, :JOB_COUNTRY, :SALARY)',3);
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with Statement.GetSQLParams do
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begin
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ByName('EMP_NO').AsInteger := 150;
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ByName('FIRST_NAME').AsString := 'John';
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ByName('LAST_NAME').AsString := 'Doe';
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ByName('PHONE_EXT').AsString := '';
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ByName('HIRE_DATE').AsDateTime := EncodeDate(2015,4,1);
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ByName('DEPT_NO').AsString := '600';
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ByName('JOB_CODE').AsString := 'Eng';
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ByName('JOB_GRADE').AsInteger := 4;
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ByName('JOB_COUNTRY').AsString := 'England';
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ByName('SALARY').AsFloat := 41000.89;
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end;
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Statement.Execute;
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WriteAffectedRows(Statement);
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3);
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writeln(OutFile,'Relation Name = ',Statement.Metadata.GetUniqueRelationName);
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PrintMetaData(Statement.GetMetaData);
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 150;
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ReportResults(Statement);
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{Now repeat but with a non-unique parameter name}
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'INSERT INTO EMPLOYEE (EMP_NO, FIRST_NAME, LAST_NAME, PHONE_EXT, HIRE_DATE,' +
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'DEPT_NO, JOB_CODE, JOB_GRADE, JOB_COUNTRY, SALARY) '+
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'VALUES (:EMP_NO, :FIRST_NAME, :FIRST_NAME, :PHONE_EXT, :HIRE_DATE,' +
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':DEPT_NO, :JOB_CODE, :JOB_GRADE, :JOB_COUNTRY, :SALARY)',3);
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with Statement.GetSQLParams do
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begin
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ByName('EMP_NO').AsInteger := 151;
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ByName('FIRST_NAME').AsString := 'Major';
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ByName('PHONE_EXT').AsString := '';
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ByName('HIRE_DATE').AsDateTime := EncodeDate(2015,4,1);;
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ByName('DEPT_NO').AsString := '600';
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ByName('JOB_CODE').AsString := 'Eng';
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ByName('JOB_GRADE').AsInteger := 4;
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ByName('JOB_COUNTRY').AsString := 'England';
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ByName('SALARY').AsFloat := 40000.59;
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end;
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Statement.Execute;
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WriteAffectedRows(Statement);
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3);
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 151;
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ReportResults(Statement);
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writeln(OutFile,'Now Delete the rows');
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Statement := Attachment.Prepare(Transaction,'Delete From Employee Where EMP_NO = ?',3);
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Statement.GetSQLParams[0].AsInteger := 150;
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Statement.Execute;
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WriteAffectedRows(Statement);
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Statement.GetSQLParams[0].AsInteger := 151;
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Statement.Execute;
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WriteAffectedRows(Statement);
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{Now again but with a null}
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'INSERT INTO EMPLOYEE (EMP_NO, FIRST_NAME, LAST_NAME, PHONE_EXT, HIRE_DATE,' +
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'DEPT_NO, JOB_CODE, JOB_GRADE, JOB_COUNTRY, SALARY) '+
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'VALUES (:EMP_NO, :FIRST_NAME, :LAST_NAME, :PHONE_EXT, :HIRE_DATE,' +
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':DEPT_NO, :JOB_CODE, :JOB_GRADE, :JOB_COUNTRY, :SALARY)',3);
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with Statement.GetSQLParams do
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begin
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ByName('EMP_NO').AsInteger := 150;
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ByName('FIRST_NAME').AsString := 'Jane';
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ByName('LAST_NAME').AsString := 'Doe';
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ByName('PHONE_EXT').Clear;
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ByName('HIRE_DATE').AsDateTime := EncodeDate(2015,4,1);;
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ByName('DEPT_NO').AsString := '600';
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ByName('JOB_CODE').AsString := 'Eng';
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ByName('JOB_GRADE').AsInteger := 4;
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ByName('JOB_COUNTRY').AsString := 'England';
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ByName('SALARY').AsFloat := 41000.89;
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end;
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writeln(OutFile,'Inserting');
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Statement.Execute;
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WriteAffectedRows(Statement);
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3);
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 150;
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ReportResults(Statement);
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writeln(OutFile,'Employee Count = ', Attachment.OpenCursorAtStart(Transaction,
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'Select count(*) from EMPLOYEE',3)[0].AsInteger);
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writeln(OutFile,'Prepare Query again');
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writeln(OutFile);
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Statement.Prepare;
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 150;
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ReportResults(Statement);
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Transaction2 := Attachment.StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taRollback);
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writeln(OutFile,'Prepare Query again with a different transaction');
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writeln(OutFile);
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Statement.Prepare(Transaction2);
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 8;
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ReportResults(Statement);
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Transaction3 := Attachment.StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taRollback);
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writeln(OutFile,'Open Cursor with a different transaction');
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writeln(OutFile);
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Rows := Statement.OpenCursor(Transaction3);
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try
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while Rows.FetchNext do
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ReportResult(Rows);
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finally
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Rows.Close;
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end;
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writeln(OutFile,'Same Statement - updated params');
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 9;
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ReportResults(Statement);
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end;
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function TTest4.TestTitle: AnsiString;
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begin
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Result := 'Test 4: Update, Insert and Delete Queries';
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end;
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procedure TTest4.RunTest(CharSet: AnsiString; SQLDialect: integer);
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var Attachment: IAttachment;
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DPB: IDPB;
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begin
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DPB := FirebirdAPI.AllocateDPB;
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DPB.Add(isc_dpb_user_name).setAsString(Owner.GetUserName);
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DPB.Add(isc_dpb_password).setAsString(Owner.GetPassword);
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DPB.Add(isc_dpb_lc_ctype).setAsString(CharSet);
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DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(SQLDialect);
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writeln(OutFile,'Opening ',Owner.GetEmployeeDatabaseName);
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Attachment := FirebirdAPI.OpenDatabase(Owner.GetEmployeeDatabaseName,DPB);
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writeln(OutFile,'Database Open');
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DoQuery(Attachment);
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end;
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initialization
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RegisterTest(TTest4);
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end.
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