ABAP Select data from SAP table SAPWLPSTRC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SAPWLPSTRC 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 SAPWLPSTRC. 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 SAPWLPSTRC 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_SAPWLPSTRC TYPE STANDARD TABLE OF SAPWLPSTRC,
      WA_SAPWLPSTRC TYPE SAPWLPSTRC,
      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: <SAPWLPSTRC> TYPE SAPWLPSTRC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SAPWLPSTRC
*  INTO TABLE @DATA(IT_SAPWLPSTRC2).
*--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_SAPWLPSTRC INDEX 1 INTO DATA(WA_SAPWLPSTRC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SAPWLPSTRC>-VERSION = 1.
<SAPWLPSTRC>-FILENAME = 1.
<SAPWLPSTRC>-FILE_ERROR = 1.
<SAPWLPSTRC>-COUNTER = 1.
<SAPWLPSTRC>-FILESIZ_MB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SAPWLPSTRC-FILEDELETD, sy-vline,
  WA_SAPWLPSTRC-CLIENT, sy-vline,
  WA_SAPWLPSTRC-USERNAME, sy-vline,
  WA_SAPWLPSTRC-WP_NUMBER, sy-vline,
  WA_SAPWLPSTRC-TIME_RES, sy-vline,
  WA_SAPWLPSTRC-FLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SAPWLPSTRC 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_SAPWLPSTRC 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_SAPWLPSTRC INTO WA_SAPWLPSTRC.


*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_SAPWLPSTRC_STR, 
VERSION TYPE STRING,
FILENAME TYPE STRING,
FILE_ERROR TYPE STRING,
COUNTER TYPE STRING,
FILESIZ_MB TYPE STRING,
FILEDELETD TYPE STRING,
CLIENT TYPE STRING,
USERNAME TYPE STRING,
WP_NUMBER TYPE STRING,
TIME_RES TYPE STRING,
FLAG TYPE STRING,
INSTANCENO TYPE STRING,
INT_FLAG TYPE STRING,
TASKTYPE TYPE STRING,
NAMELENGTH TYPE STRING,
PLATFORMID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SAPWLPSTRC_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_SAPWLPSTRC_STR-VERSION sy-vline 
WA_SAPWLPSTRC_STR-FILENAME sy-vline 
WA_SAPWLPSTRC_STR-FILE_ERROR sy-vline 
WA_SAPWLPSTRC_STR-COUNTER sy-vline 
WA_SAPWLPSTRC_STR-FILESIZ_MB sy-vline 
WA_SAPWLPSTRC_STR-FILEDELETD sy-vline 
WA_SAPWLPSTRC_STR-CLIENT sy-vline 
WA_SAPWLPSTRC_STR-USERNAME sy-vline 
WA_SAPWLPSTRC_STR-WP_NUMBER sy-vline 
WA_SAPWLPSTRC_STR-TIME_RES sy-vline 
WA_SAPWLPSTRC_STR-FLAG sy-vline 
WA_SAPWLPSTRC_STR-INSTANCENO sy-vline 
WA_SAPWLPSTRC_STR-INT_FLAG sy-vline 
WA_SAPWLPSTRC_STR-TASKTYPE sy-vline 
WA_SAPWLPSTRC_STR-NAMELENGTH sy-vline 
WA_SAPWLPSTRC_STR-PLATFORMID sy-vline      INTO ld_text SEPARATED BY SPACE.

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