Why it is my query designer keeps hanging (not responding)

compiling this query. any idea guys. thanks.

While (1=1)

BEGIN

INSERT inTO ...

SELECT * FROM WHERE

IF @@ROWCOUNT = 0

BEGIN

SET @PFromDateInside=@PFromDateInside -1

SET @PToDateInside=@PToDateInside-1

ENDIF

ELSE

BREAK

END

OR

While (1=1)

BEGIN

INSERT inTO ...

SELECT * FROM WHERE

IF @@ROWCOUNT >=0

BREAK

ELSE

BEGIN

SET @PFromDateInside=@PFromDateInside -1

SET @PToDateInside=@PToDateInside-1

END

END