ABAP Select data from SAP table CSEL_EKPO 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 CSEL_EKPO 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 CSEL_EKPO. 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 CSEL_EKPO 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_CSEL_EKPO TYPE STANDARD TABLE OF CSEL_EKPO,
      WA_CSEL_EKPO TYPE CSEL_EKPO,
      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: <CSEL_EKPO> TYPE CSEL_EKPO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSEL_EKPO
*  INTO TABLE @DATA(IT_CSEL_EKPO2).
*--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_CSEL_EKPO INDEX 1 INTO DATA(WA_CSEL_EKPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSEL_EKPO>-MANDT = 1.
<CSEL_EKPO>-EBELN = 1.
<CSEL_EKPO>-EBELP = 1.
<CSEL_EKPO>-LBLNI = 1.
<CSEL_EKPO>-BEDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSEL_EKPO-WERKS, sy-vline,
  WA_CSEL_EKPO-LIFNR, sy-vline,
  WA_CSEL_EKPO-EKORG, sy-vline,
  WA_CSEL_EKPO-EKGRP, sy-vline,
  WA_CSEL_EKPO-TXZ01, sy-vline,
  WA_CSEL_EKPO-PSTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSEL_EKPO 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_CSEL_EKPO 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_CSEL_EKPO INTO WA_CSEL_EKPO.


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

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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSEL_EKPO-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSEL_EKPO-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_CSEL_EKPO_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LBLNI TYPE STRING,
BEDAT TYPE STRING,
WERKS TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
TXZ01 TYPE STRING,
PSTYP TYPE STRING,
MATKL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSEL_EKPO_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_CSEL_EKPO_STR-MANDT sy-vline 
WA_CSEL_EKPO_STR-EBELN sy-vline 
WA_CSEL_EKPO_STR-EBELP sy-vline 
WA_CSEL_EKPO_STR-LBLNI sy-vline 
WA_CSEL_EKPO_STR-BEDAT sy-vline 
WA_CSEL_EKPO_STR-WERKS sy-vline 
WA_CSEL_EKPO_STR-LIFNR sy-vline 
WA_CSEL_EKPO_STR-EKORG sy-vline 
WA_CSEL_EKPO_STR-EKGRP sy-vline 
WA_CSEL_EKPO_STR-TXZ01 sy-vline 
WA_CSEL_EKPO_STR-PSTYP sy-vline 
WA_CSEL_EKPO_STR-MATKL sy-vline      INTO ld_text SEPARATED BY SPACE.

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