ABAP Select data from SAP table WLF_S_CHECK_MANAGER_ERROR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLF_S_CHECK_MANAGER_ERROR
*  INTO TABLE @DATA(IT_WLF_S_CHECK_MANAGER_ERROR2).
*--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_WLF_S_CHECK_MANAGER_ERROR INDEX 1 INTO DATA(WA_WLF_S_CHECK_MANAGER_ERROR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLF_S_CHECK_MANAGER_ERROR>-WBELN = 1.
<WLF_S_CHECK_MANAGER_ERROR>-POSNR = 1.
<WLF_S_CHECK_MANAGER_ERROR>-MSGID = 1.
<WLF_S_CHECK_MANAGER_ERROR>-MSGTY = 1.
<WLF_S_CHECK_MANAGER_ERROR>-MSGNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLF_S_CHECK_MANAGER_ERROR-MSGV1, sy-vline,
  WA_WLF_S_CHECK_MANAGER_ERROR-MSGV2, sy-vline,
  WA_WLF_S_CHECK_MANAGER_ERROR-MSGV3, sy-vline,
  WA_WLF_S_CHECK_MANAGER_ERROR-MSGV4, sy-vline,
  WA_WLF_S_CHECK_MANAGER_ERROR-FIELDNAME, sy-vline,
  WA_WLF_S_CHECK_MANAGER_ERROR-TABNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLF_S_CHECK_MANAGER_ERROR 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_WLF_S_CHECK_MANAGER_ERROR 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_WLF_S_CHECK_MANAGER_ERROR INTO WA_WLF_S_CHECK_MANAGER_ERROR.


*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.

*Conversion exit ALPHA, internal->external for field WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_S_CHECK_MANAGER_ERROR-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_S_CHECK_MANAGER_ERROR-WBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_WLF_S_CHECK_MANAGER_ERROR-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_S_CHECK_MANAGER_ERROR-PARVW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TDSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_S_CHECK_MANAGER_ERROR-TDSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_S_CHECK_MANAGER_ERROR-TDSPRAS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_WLF_S_CHECK_MANAGER_ERROR_STR, 
WBELN TYPE STRING,
POSNR TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
FIELDNAME TYPE STRING,
TABNAME TYPE STRING,
ERROR_OBJECT TYPE STRING,
PARVW TYPE STRING,
PARZA TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
CID TYPE STRING,
PID TYPE STRING,
TDID TYPE STRING,
TDSPRAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLF_S_CHECK_MANAGER_ERROR_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_WLF_S_CHECK_MANAGER_ERROR_STR-WBELN sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-POSNR sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-MSGID sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-MSGTY sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-MSGNO sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-MSGV1 sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-MSGV2 sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-MSGV3 sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-MSGV4 sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-FIELDNAME sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-TABNAME sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-ERROR_OBJECT sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-PARVW sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-PARZA sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-STUNR sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-ZAEHK sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-CID sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-PID sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-TDID sy-vline 
WA_WLF_S_CHECK_MANAGER_ERROR_STR-TDSPRAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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