ABAP Select data from SAP table WSRP_REQUIREMENTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSRP_REQUIREMENTS
*  INTO TABLE @DATA(IT_WSRP_REQUIREMENTS2).
*--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_WSRP_REQUIREMENTS INDEX 1 INTO DATA(WA_WSRP_REQUIREMENTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSRP_REQUIREMENTS>-KUNNR = 1.
<WSRP_REQUIREMENTS>-MATNR = 1.
<WSRP_REQUIREMENTS>-MATKL = 1.
<WSRP_REQUIREMENTS>-RPLRQ = 1.
<WSRP_REQUIREMENTS>-RPLME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSRP_REQUIREMENTS-RESWK, sy-vline,
  WA_WSRP_REQUIREMENTS-LIFNR, sy-vline,
  WA_WSRP_REQUIREMENTS-GRTIMEPT, sy-vline,
  WA_WSRP_REQUIREMENTS-GRTIMEZN, sy-vline,
  WA_WSRP_REQUIREMENTS-ARPLRQ, sy-vline,
  WA_WSRP_REQUIREMENTS-ARPLME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSRP_REQUIREMENTS 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_WSRP_REQUIREMENTS 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_WSRP_REQUIREMENTS INTO WA_WSRP_REQUIREMENTS.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WSRP_REQUIREMENTS-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSRP_REQUIREMENTS-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSRP_REQUIREMENTS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSRP_REQUIREMENTS-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WSRP_REQUIREMENTS-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSRP_REQUIREMENTS-LIFNR.
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_WSRP_REQUIREMENTS_STR, 
KUNNR TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
RPLRQ TYPE STRING,
RPLME TYPE STRING,
RESWK TYPE STRING,
LIFNR TYPE STRING,
GRTIMEPT TYPE STRING,
GRTIMEZN TYPE STRING,
ARPLRQ TYPE STRING,
ARPLME TYPE STRING,
ARPLME_ISO TYPE STRING,
ARESWK TYPE STRING,
ALIFNR TYPE STRING,
AEINDT TYPE STRING,
AUZEIT TYPE STRING,
FFNR TYPE STRING,
BRPLRQ TYPE STRING,
BRPLME TYPE STRING,
BRPLME_ISO TYPE STRING,
BRESWK TYPE STRING,
BLIFNR TYPE STRING,
OBJTYPE TYPE STRING,
BELNR TYPE STRING,
POSNR TYPE STRING,
EINDT TYPE STRING,
UZEIT TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSRP_REQUIREMENTS_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_WSRP_REQUIREMENTS_STR-KUNNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-MATNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-MATKL sy-vline 
WA_WSRP_REQUIREMENTS_STR-RPLRQ sy-vline 
WA_WSRP_REQUIREMENTS_STR-RPLME sy-vline 
WA_WSRP_REQUIREMENTS_STR-RESWK sy-vline 
WA_WSRP_REQUIREMENTS_STR-LIFNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-GRTIMEPT sy-vline 
WA_WSRP_REQUIREMENTS_STR-GRTIMEZN sy-vline 
WA_WSRP_REQUIREMENTS_STR-ARPLRQ sy-vline 
WA_WSRP_REQUIREMENTS_STR-ARPLME sy-vline 
WA_WSRP_REQUIREMENTS_STR-ARPLME_ISO sy-vline 
WA_WSRP_REQUIREMENTS_STR-ARESWK sy-vline 
WA_WSRP_REQUIREMENTS_STR-ALIFNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-AEINDT sy-vline 
WA_WSRP_REQUIREMENTS_STR-AUZEIT sy-vline 
WA_WSRP_REQUIREMENTS_STR-FFNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-BRPLRQ sy-vline 
WA_WSRP_REQUIREMENTS_STR-BRPLME sy-vline 
WA_WSRP_REQUIREMENTS_STR-BRPLME_ISO sy-vline 
WA_WSRP_REQUIREMENTS_STR-BRESWK sy-vline 
WA_WSRP_REQUIREMENTS_STR-BLIFNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-OBJTYPE sy-vline 
WA_WSRP_REQUIREMENTS_STR-BELNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-POSNR sy-vline 
WA_WSRP_REQUIREMENTS_STR-EINDT sy-vline 
WA_WSRP_REQUIREMENTS_STR-UZEIT sy-vline 
WA_WSRP_REQUIREMENTS_STR-BSTYP sy-vline 
WA_WSRP_REQUIREMENTS_STR-BSART sy-vline      INTO ld_text SEPARATED BY SPACE.

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