ABAP Select data from SAP table SAPWLPARAM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP SAPWLPARAM table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to SAPWLPARAM. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the SAPWLPARAM table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_SAPWLPARAM TYPE STANDARD TABLE OF SAPWLPARAM,
      WA_SAPWLPARAM TYPE SAPWLPARAM,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <SAPWLPARAM> TYPE SAPWLPARAM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SAPWLPARAM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SAPWLPARAM
  INTO TABLE IT_SAPWLPARAM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SAPWLPARAM
*  INTO TABLE @DATA(IT_SAPWLPARAM2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_SAPWLPARAM INDEX 1 INTO DATA(WA_SAPWLPARAM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SAPWLPARAM ASSIGNING <SAPWLPARAM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SAPWLPARAM>-VERSION = 1.
<SAPWLPARAM>-VERTYPE = 1.
<SAPWLPARAM>-ACTIVE = 1.
<SAPWLPARAM>-LASTCHDATE = 1.
<SAPWLPARAM>-LASTCHTIME = 1.

ENDLOOP.

LOOP AT IT_SAPWLPARAM INTO WA_SAPWLPARAM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SAPWLPARAM-LASTCHUSER, sy-vline,
  WA_SAPWLPARAM-SINCEDATE, sy-vline,
  WA_SAPWLPARAM-COLLECTFLG, sy-vline,
  WA_SAPWLPARAM-CALLSTAFLG, sy-vline,
  WA_SAPWLPARAM-DELFILEFLG, sy-vline,
  WA_SAPWLPARAM-DELEXTFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SAPWLPARAM you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_SAPWLPARAM TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_SAPWLPARAM INTO WA_SAPWLPARAM.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SAPWLPARAM_STR, 
VERSION TYPE STRING,
VERTYPE TYPE STRING,
ACTIVE TYPE STRING,
LASTCHDATE TYPE STRING,
LASTCHTIME TYPE STRING,
LASTCHUSER TYPE STRING,
SINCEDATE TYPE STRING,
COLLECTFLG TYPE STRING,
CALLSTAFLG TYPE STRING,
DELFILEFLG TYPE STRING,
DELEXTFLG TYPE STRING,
ONLYTTLFLG TYPE STRING,
TOCFLAG TYPE STRING,
RES_DAYS TYPE STRING,
RES_WEEKS TYPE STRING,
RES_MONTHS TYPE STRING,
RES_YEARS TYPE STRING,
QUIET_DAYS TYPE STRING,
RES_DSUM TYPE STRING,
RES_WSUM TYPE STRING,
RES_MSUM TYPE STRING,
RES_YSUM TYPE STRING,
MAXOBJECTS TYPE STRING,
COUNTLIMIT TYPE STRING,
ACLIMIT TYPE STRING,
STATFILESZ TYPE STRING,
REORG80_HR TYPE STRING,
REORG80_DY TYPE STRING,
REORG60_TT TYPE STRING,
REORG60_HR TYPE STRING,
REORG60_DY TYPE STRING,
ACCOUNTLVL TYPE STRING,
USERCLIENT TYPE STRING,
CUAPROFILE TYPE STRING,
MAX_NO_RFC TYPE STRING,
CUM_WEEK TYPE STRING,
CUM_MONTH TYPE STRING,
CUM_HITL TYPE STRING,
CUM_MEM TYPE STRING,
CUM_ACCT TYPE STRING,
CUM_RFC TYPE STRING,
CUM_TERMIO TYPE STRING,
CUM_FCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SAPWLPARAM_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_SAPWLPARAM_STR-VERSION sy-vline 
WA_SAPWLPARAM_STR-VERTYPE sy-vline 
WA_SAPWLPARAM_STR-ACTIVE sy-vline 
WA_SAPWLPARAM_STR-LASTCHDATE sy-vline 
WA_SAPWLPARAM_STR-LASTCHTIME sy-vline 
WA_SAPWLPARAM_STR-LASTCHUSER sy-vline 
WA_SAPWLPARAM_STR-SINCEDATE sy-vline 
WA_SAPWLPARAM_STR-COLLECTFLG sy-vline 
WA_SAPWLPARAM_STR-CALLSTAFLG sy-vline 
WA_SAPWLPARAM_STR-DELFILEFLG sy-vline 
WA_SAPWLPARAM_STR-DELEXTFLG sy-vline 
WA_SAPWLPARAM_STR-ONLYTTLFLG sy-vline 
WA_SAPWLPARAM_STR-TOCFLAG sy-vline 
WA_SAPWLPARAM_STR-RES_DAYS sy-vline 
WA_SAPWLPARAM_STR-RES_WEEKS sy-vline 
WA_SAPWLPARAM_STR-RES_MONTHS sy-vline 
WA_SAPWLPARAM_STR-RES_YEARS sy-vline 
WA_SAPWLPARAM_STR-QUIET_DAYS sy-vline 
WA_SAPWLPARAM_STR-RES_DSUM sy-vline 
WA_SAPWLPARAM_STR-RES_WSUM sy-vline 
WA_SAPWLPARAM_STR-RES_MSUM sy-vline 
WA_SAPWLPARAM_STR-RES_YSUM sy-vline 
WA_SAPWLPARAM_STR-MAXOBJECTS sy-vline 
WA_SAPWLPARAM_STR-COUNTLIMIT sy-vline 
WA_SAPWLPARAM_STR-ACLIMIT sy-vline 
WA_SAPWLPARAM_STR-STATFILESZ sy-vline 
WA_SAPWLPARAM_STR-REORG80_HR sy-vline 
WA_SAPWLPARAM_STR-REORG80_DY sy-vline 
WA_SAPWLPARAM_STR-REORG60_TT sy-vline 
WA_SAPWLPARAM_STR-REORG60_HR sy-vline 
WA_SAPWLPARAM_STR-REORG60_DY sy-vline 
WA_SAPWLPARAM_STR-ACCOUNTLVL sy-vline 
WA_SAPWLPARAM_STR-USERCLIENT sy-vline 
WA_SAPWLPARAM_STR-CUAPROFILE sy-vline 
WA_SAPWLPARAM_STR-MAX_NO_RFC sy-vline 
WA_SAPWLPARAM_STR-CUM_WEEK sy-vline 
WA_SAPWLPARAM_STR-CUM_MONTH sy-vline 
WA_SAPWLPARAM_STR-CUM_HITL sy-vline 
WA_SAPWLPARAM_STR-CUM_MEM sy-vline 
WA_SAPWLPARAM_STR-CUM_ACCT sy-vline 
WA_SAPWLPARAM_STR-CUM_RFC sy-vline 
WA_SAPWLPARAM_STR-CUM_TERMIO sy-vline 
WA_SAPWLPARAM_STR-CUM_FCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.