ABAP Select data from SAP table MEPO1340GRID into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MEPO1340GRID 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 MEPO1340GRID. 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 MEPO1340GRID 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_MEPO1340GRID TYPE STANDARD TABLE OF MEPO1340GRID,
      WA_MEPO1340GRID TYPE MEPO1340GRID,
      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: <MEPO1340GRID> TYPE MEPO1340GRID.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MEPO1340GRID.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MEPO1340GRID
  INTO TABLE IT_MEPO1340GRID.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MEPO1340GRID
*  INTO TABLE @DATA(IT_MEPO1340GRID2).
*--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_MEPO1340GRID INDEX 1 INTO DATA(WA_MEPO1340GRID2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MEPO1340GRID ASSIGNING <MEPO1340GRID>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MEPO1340GRID>-OBJREF = 1.
<MEPO1340GRID>-ETENS = 1.
<MEPO1340GRID>-EBTYP = 1.
<MEPO1340GRID>-LPEIN = 1.
<MEPO1340GRID>-EINDT = 1.

ENDLOOP.

LOOP AT IT_MEPO1340GRID INTO WA_MEPO1340GRID.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MEPO1340GRID-ELPEI, sy-vline,
  WA_MEPO1340GRID-EEIND, sy-vline,
  WA_MEPO1340GRID-UZEIT, sy-vline,
  WA_MEPO1340GRID-MENGE, sy-vline,
  WA_MEPO1340GRID-NETPR, sy-vline,
  WA_MEPO1340GRID-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MEPO1340GRID 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_MEPO1340GRID 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_MEPO1340GRID INTO WA_MEPO1340GRID.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1340GRID-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1340GRID-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1340GRID-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1340GRID-EMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1340GRID-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1340GRID-MEINS.
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_MEPO1340GRID_STR, 
OBJREF TYPE STRING,
ETENS TYPE STRING,
EBTYP TYPE STRING,
LPEIN TYPE STRING,
EINDT TYPE STRING,
ELPEI TYPE STRING,
EEIND TYPE STRING,
UZEIT TYPE STRING,
MENGE TYPE STRING,
NETPR TYPE STRING,
WAERS TYPE STRING,
XBLNR TYPE STRING,
CRDAT TYPE STRING,
ERDAT TYPE STRING,
EZEIT TYPE STRING,
VBELN TYPE STRING,
VBELP TYPE STRING,
UECHA TYPE STRING,
CHARG TYPE STRING,
DABMG TYPE STRING,
KZDIS TYPE STRING,
EMATN TYPE STRING,
LOEKZ TYPE STRING,
MEINS TYPE STRING,
ESTKZ TYPE STRING,
CELL_LAYOUT TYPE STRING,
ALV_DATA_CHANGED TYPE STRING,
EDIT TYPE STRING,
STATUSICON TYPE STRING,
MECONFDUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MEPO1340GRID_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_MEPO1340GRID_STR-OBJREF sy-vline 
WA_MEPO1340GRID_STR-ETENS sy-vline 
WA_MEPO1340GRID_STR-EBTYP sy-vline 
WA_MEPO1340GRID_STR-LPEIN sy-vline 
WA_MEPO1340GRID_STR-EINDT sy-vline 
WA_MEPO1340GRID_STR-ELPEI sy-vline 
WA_MEPO1340GRID_STR-EEIND sy-vline 
WA_MEPO1340GRID_STR-UZEIT sy-vline 
WA_MEPO1340GRID_STR-MENGE sy-vline 
WA_MEPO1340GRID_STR-NETPR sy-vline 
WA_MEPO1340GRID_STR-WAERS sy-vline 
WA_MEPO1340GRID_STR-XBLNR sy-vline 
WA_MEPO1340GRID_STR-CRDAT sy-vline 
WA_MEPO1340GRID_STR-ERDAT sy-vline 
WA_MEPO1340GRID_STR-EZEIT sy-vline 
WA_MEPO1340GRID_STR-VBELN sy-vline 
WA_MEPO1340GRID_STR-VBELP sy-vline 
WA_MEPO1340GRID_STR-UECHA sy-vline 
WA_MEPO1340GRID_STR-CHARG sy-vline 
WA_MEPO1340GRID_STR-DABMG sy-vline 
WA_MEPO1340GRID_STR-KZDIS sy-vline 
WA_MEPO1340GRID_STR-EMATN sy-vline 
WA_MEPO1340GRID_STR-LOEKZ sy-vline 
WA_MEPO1340GRID_STR-MEINS sy-vline 
WA_MEPO1340GRID_STR-ESTKZ sy-vline 
WA_MEPO1340GRID_STR-CELL_LAYOUT sy-vline 
WA_MEPO1340GRID_STR-ALV_DATA_CHANGED sy-vline 
WA_MEPO1340GRID_STR-EDIT sy-vline 
WA_MEPO1340GRID_STR-STATUSICON sy-vline 
WA_MEPO1340GRID_STR-MECONFDUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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