ABAP Select data from SAP table EDI_Z04LA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EDI_Z04LA 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 EDI_Z04LA. 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 EDI_Z04LA 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_EDI_Z04LA TYPE STANDARD TABLE OF EDI_Z04LA,
      WA_EDI_Z04LA TYPE EDI_Z04LA,
      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: <EDI_Z04LA> TYPE EDI_Z04LA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EDI_Z04LA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EDI_Z04LA
  INTO TABLE IT_EDI_Z04LA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDI_Z04LA
*  INTO TABLE @DATA(IT_EDI_Z04LA2).
*--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_EDI_Z04LA INDEX 1 INTO DATA(WA_EDI_Z04LA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EDI_Z04LA ASSIGNING <EDI_Z04LA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDI_Z04LA>-HLNUM = 1.
<EDI_Z04LA>-PARENT = 1.
<EDI_Z04LA>-EXIDV = 1.
<EDI_Z04LA>-BTGEW = 1.
<EDI_Z04LA>-NTGEW = 1.

ENDLOOP.

LOOP AT IT_EDI_Z04LA INTO WA_EDI_Z04LA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDI_Z04LA-TARAG, sy-vline,
  WA_EDI_Z04LA-GEWEI, sy-vline,
  WA_EDI_Z04LA-BTVOL, sy-vline,
  WA_EDI_Z04LA-NTVOL, sy-vline,
  WA_EDI_Z04LA-TAVOL, sy-vline,
  WA_EDI_Z04LA-VOLEH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDI_Z04LA 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_EDI_Z04LA 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_EDI_Z04LA INTO WA_EDI_Z04LA.


*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_EDI_Z04LA_STR, 
HLNUM TYPE STRING,
PARENT TYPE STRING,
EXIDV TYPE STRING,
BTGEW TYPE STRING,
NTGEW TYPE STRING,
TARAG TYPE STRING,
GEWEI TYPE STRING,
BTVOL TYPE STRING,
NTVOL TYPE STRING,
TAVOL TYPE STRING,
VOLEH TYPE STRING,
LAENG TYPE STRING,
BREIT TYPE STRING,
HOEHE TYPE STRING,
MEABM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDI_Z04LA_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_EDI_Z04LA_STR-HLNUM sy-vline 
WA_EDI_Z04LA_STR-PARENT sy-vline 
WA_EDI_Z04LA_STR-EXIDV sy-vline 
WA_EDI_Z04LA_STR-BTGEW sy-vline 
WA_EDI_Z04LA_STR-NTGEW sy-vline 
WA_EDI_Z04LA_STR-TARAG sy-vline 
WA_EDI_Z04LA_STR-GEWEI sy-vline 
WA_EDI_Z04LA_STR-BTVOL sy-vline 
WA_EDI_Z04LA_STR-NTVOL sy-vline 
WA_EDI_Z04LA_STR-TAVOL sy-vline 
WA_EDI_Z04LA_STR-VOLEH sy-vline 
WA_EDI_Z04LA_STR-LAENG sy-vline 
WA_EDI_Z04LA_STR-BREIT sy-vline 
WA_EDI_Z04LA_STR-HOEHE sy-vline 
WA_EDI_Z04LA_STR-MEABM sy-vline      INTO ld_text SEPARATED BY SPACE.

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