sqlserver using the cursor

DECLARE cursor_name CURSOR FOR --定义游标
 SELECT REPLACE(JSURL,'&FP=1&FP=1','&FP=1'),JSImgID FROM [srv_lnk_wps].wps_jt_2017.dbo.T_JSURL0331 WHERE JSImgID IS NOT NULL AND JSURL IS NOT NULL GROUP BY JSImgID,JSURL

OPEN cursor_name --打开游标
declare   @JSURL NVARCHAR(100), @JSImgID int 
the FETCH  the NEXT  the FROM cursor_name the INTO   @JSURL , @JSImgID   - fetch the next line of cursor data 
the WHILE  @@ FETCH_STATUS  =  0 
    the BEGIN 
         the UPDATE  [ srv_lnk_wps ] .wps_jt_2017.dbo.T_IMAGEURL0331 the SET F_ADDR_Url = @JSURL  the WHERE ID = @JSImgID 
        the FETCH  the NEXT  the FROM cursor_name the INTO  @JSURL , @JSImgID 
    the END 
the CLOSE cursor_name - close a cursor 
the DEALLOCATE cursor_name -Cursor release