MySQL Stored Procedure with IF/THEN/ELSE - mysql

Question

I have a MySQL stored procedure and in it, the following WHILE statement.
I have confirmed that #RowCnt is 1, and #MaxRows is 6090, however after further debugging, I realized that the WHILE statement is going through a single iteration and not continuing; so I'm hoping to have some light shed on what could possibly be causing this.
Full disclosure: I ported this from SQL Server to a MySQL stored procedure, something I have never taken on before. (meaning SQL Server, porting OR stored procedures..)
WHILE #RowCnt <= #MaxRows DO
SELECT #currentReadSeq:=ReadSeq, #currentReadStrength:=ReadStrength, #currentReadDateTime:=ReadDateTime, #currentReaderID:=ReaderID FROM tblTempRead WHERE rownum = #RowCnt;
IF ( ((#lastReadSeq + 10) > #currentReadSeq) AND (#lastReaderId = #currentReaderId) ) THEN
SET #lastReadSeq = #currentReadSeq, #lastReadStrength = #currentReadStrength, #lastReadDateTime = #currentReadDateTime, #lastReaderID = #currentReaderID;
ELSE
INSERT INTO tblreaddataresults (SiteID, ReadDateTimeStart, ReadDateTimeEnd, ReadSeqStart, ReadSeqEnd, ReaderID, DirectSeconds) VALUES ('1002', #saveReadDateTime, #lastReadDateTime, #saveReadSeq, #lastReadSeq, #lastReaderID, timestampdiff(SECOND,#saveReadDateTime,#lastReadDateTime));
SET #saveReadSeq = #currentReadSeq, #saveReadStrength = #currentReadStrength, #saveReadDateTime = #currentReadDateTime, #saveReaderID = #currentReaderID;
SET #lastReadSeq = #saveReadSeq, #lastReadStrength = #saveReadStrength, #lastReadDateTime = #saveReadDateTime, #lastReaderID = #saveReaderID;
END IF;
SET #RowCnt = #RowCnt+1;
END WHILE;

Answer 1

Try This Construct
WHILE (#RowCnt <= #MaxRows)
BEGIN
SELECT #currentReadSeq:=ReadSeq, #currentReadStrength:=ReadStrength, #currentReadDateTime:=ReadDateTime, #currentReaderID:=ReaderID FROM tblTempRead WHERE rownum = #RowCnt;
IF (((#lastReadSeq + 10) > #currentReadSeq) AND (#lastReaderId = #currentReaderId))
BEGIN
SET #lastReadSeq = #currentReadSeq, #lastReadStrength = #currentReadStrength, #lastReadDateTime = #currentReadDateTime, #lastReaderID = #currentReaderID;
END
ELSE
BEGIN
INSERT INTO tblreaddataresults (SiteID, ReadDateTimeStart, ReadDateTimeEnd,ReadSeqStart, ReadSeqEnd, ReaderID, DirectSeconds) VALUES ('1002',#saveReadDateTime, #lastReadDateTime, #saveReadSeq, #lastReadSeq, #lastReaderID,timestampdiff(SECOND,#saveReadDateTime,#lastReadDateTime));
SET #saveReadSeq = #currentReadSeq, #saveReadStrength = #currentReadStrength, #saveReadDateTime = #currentReadDateTime, #saveReaderID = #currentReaderID;
SET #lastReadSeq = #saveReadSeq, #lastReadStrength = #saveReadStrength,#lastReadDateTime = #saveReadDateTime, #lastReaderID = #saveReaderID;
END
SET #RowCnt = #RowCnt+1;
END