Generate Sequence: FireDac apdater Oracle, XE7

[Former user]

Hello, First time generate entity with sequence i get error sequence not found:

unit Spring.Persistence.SQL.Commands.CreateSequence;

function TCreateSequenceExecutor.SequenceExists: Boolean; return true when squence not found in database.

 Result := not results.IsEmpty; <-- cause error

SELECT COUNT(*) FROM USER_SEQUENCES WHERE SEQUENCE_NAME = 'SEQ_CUST' return one ligne (0 or 1) not empty.

Best Regards

[Linas Naginionis]

fixes #85

→ <<cset fefd22c37873>>

[Alphonse ngayap]

Hello, thank for quickly resolve (#83, #84 and this)