ABAP Select data from SAP table DCFLS_MOCK_ME_READ_HEADER_EXP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DCFLS_MOCK_ME_READ_HEADER_EXP
*  INTO TABLE @DATA(IT_DCFLS_MOCK_ME_READ_HEADER_EXP2).
*--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_DCFLS_MOCK_ME_READ_HEADER_EXP INDEX 1 INTO DATA(WA_DCFLS_MOCK_ME_READ_HEADER_EXP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DCFLS_MOCK_ME_READ_HEADER_EXP>-MOCK_KEY = 1.
<DCFLS_MOCK_ME_READ_HEADER_EXP>-EBELN = 1.
<DCFLS_MOCK_ME_READ_HEADER_EXP>-KBEFU = 1.
<DCFLS_MOCK_ME_READ_HEADER_EXP>-EBELN = 1.
<DCFLS_MOCK_ME_READ_HEADER_EXP>-BSAKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DCFLS_MOCK_ME_READ_HEADER_EXP-LOEKZ, sy-vline,
  WA_DCFLS_MOCK_ME_READ_HEADER_EXP-LIFNR, sy-vline,
  WA_DCFLS_MOCK_ME_READ_HEADER_EXP-LLIEF, sy-vline,
  WA_DCFLS_MOCK_ME_READ_HEADER_EXP-WEAKT, sy-vline,
  WA_DCFLS_MOCK_ME_READ_HEADER_EXP-RESWK, sy-vline,
  WA_DCFLS_MOCK_ME_READ_HEADER_EXP-LBLIF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DCFLS_MOCK_ME_READ_HEADER_EXP 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_DCFLS_MOCK_ME_READ_HEADER_EXP 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_DCFLS_MOCK_ME_READ_HEADER_EXP INTO WA_DCFLS_MOCK_ME_READ_HEADER_EXP.


*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_DCFLS_MOCK_ME_READ_HEADER_EXP-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DCFLS_MOCK_ME_READ_HEADER_EXP-EBELN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit EXCRT, internal->external for field WKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_DCFLS_MOCK_ME_READ_HEADER_EXP-WKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DCFLS_MOCK_ME_READ_HEADER_EXP-WKURS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SPDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DCFLS_MOCK_ME_READ_HEADER_EXP-SPDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DCFLS_MOCK_ME_READ_HEADER_EXP-SPDNR.
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_DCFLS_MOCK_ME_READ_HEADER_EXP_STR, 
MOCK_KEY TYPE STRING,
EBELN TYPE STRING,
KBEFU TYPE STRING,
EBELN TYPE STRING,
BSAKZ TYPE STRING,
LOEKZ TYPE STRING,
LIFNR TYPE STRING,
LLIEF TYPE STRING,
WEAKT TYPE STRING,
RESWK TYPE STRING,
LBLIF TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
NAME1 TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
BWAER TYPE STRING,
WKURS TYPE STRING,
VBUND TYPE STRING,
ZBD1P TYPE STRING,
ERNAM TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BSTYP TYPE STRING,
SPERQ TYPE STRING,
SPRAS TYPE STRING,
ESTAK TYPE STRING,
KUNNR TYPE STRING,
EXNUM TYPE STRING,
LOGSY TYPE STRING,
MSR_ID TYPE STRING,
SPDNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DCFLS_MOCK_ME_READ_HEADER_EXP_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_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-MOCK_KEY sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-EBELN sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-KBEFU sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-EBELN sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-BSAKZ sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-LOEKZ sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-LIFNR sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-LLIEF sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-WEAKT sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-RESWK sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-LBLIF sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-INCO1 sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-INCO2 sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-NAME1 sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-PSTLZ sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-ORT01 sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-BWAER sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-WKURS sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-VBUND sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-ZBD1P sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-ERNAM sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-EKORG sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-EKGRP sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-BSTYP sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-SPERQ sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-SPRAS sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-ESTAK sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-KUNNR sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-EXNUM sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-LOGSY sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-MSR_ID sy-vline 
WA_DCFLS_MOCK_ME_READ_HEADER_EXP_STR-SPDNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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