ABAP Select data from SAP table MEPO1210_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MEPO1210_DATA 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 MEPO1210_DATA. 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 MEPO1210_DATA 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_MEPO1210_DATA TYPE STANDARD TABLE OF MEPO1210_DATA,
      WA_MEPO1210_DATA TYPE MEPO1210_DATA,
      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: <MEPO1210_DATA> TYPE MEPO1210_DATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MEPO1210_DATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MEPO1210_DATA
  INTO TABLE IT_MEPO1210_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MEPO1210_DATA
*  INTO TABLE @DATA(IT_MEPO1210_DATA2).
*--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_MEPO1210_DATA INDEX 1 INTO DATA(WA_MEPO1210_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MEPO1210_DATA ASSIGNING <MEPO1210_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MEPO1210_DATA>-EBELP = 1.
<MEPO1210_DATA>-EPSTP = 1.
<MEPO1210_DATA>-EMATN = 1.
<MEPO1210_DATA>-MENGE = 1.
<MEPO1210_DATA>-MEINS = 1.

ENDLOOP.

LOOP AT IT_MEPO1210_DATA INTO WA_MEPO1210_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MEPO1210_DATA-WERKS, sy-vline,
  WA_MEPO1210_DATA-ELPEI, sy-vline,
  WA_MEPO1210_DATA-EEIND, sy-vline,
  WA_MEPO1210_DATA-BEDNR, sy-vline,
  WA_MEPO1210_DATA-TXZ01, sy-vline,
  WA_MEPO1210_DATA-KOSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MEPO1210_DATA 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_MEPO1210_DATA 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_MEPO1210_DATA INTO WA_MEPO1210_DATA.


*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 MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-EMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-SAKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-SAKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BPRME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-BPRME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-BPRME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-BANFN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-KONNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-KONNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-ANFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-ANFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1210_DATA-REBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1210_DATA-REBELN.
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_MEPO1210_DATA_STR, 
EBELP TYPE STRING,
EPSTP TYPE STRING,
EMATN TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
WERKS TYPE STRING,
ELPEI TYPE STRING,
EEIND TYPE STRING,
BEDNR TYPE STRING,
TXZ01 TYPE STRING,
KOSTL TYPE STRING,
SAKTO TYPE STRING,
NETPR TYPE STRING,
WAERS TYPE STRING,
PEINH TYPE STRING,
BPRME TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
KONNR TYPE STRING,
KTPNR TYPE STRING,
ANFNR TYPE STRING,
ANFPS TYPE STRING,
REBELN TYPE STRING,
REBELP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MEPO1210_DATA_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_MEPO1210_DATA_STR-EBELP sy-vline 
WA_MEPO1210_DATA_STR-EPSTP sy-vline 
WA_MEPO1210_DATA_STR-EMATN sy-vline 
WA_MEPO1210_DATA_STR-MENGE sy-vline 
WA_MEPO1210_DATA_STR-MEINS sy-vline 
WA_MEPO1210_DATA_STR-WERKS sy-vline 
WA_MEPO1210_DATA_STR-ELPEI sy-vline 
WA_MEPO1210_DATA_STR-EEIND sy-vline 
WA_MEPO1210_DATA_STR-BEDNR sy-vline 
WA_MEPO1210_DATA_STR-TXZ01 sy-vline 
WA_MEPO1210_DATA_STR-KOSTL sy-vline 
WA_MEPO1210_DATA_STR-SAKTO sy-vline 
WA_MEPO1210_DATA_STR-NETPR sy-vline 
WA_MEPO1210_DATA_STR-WAERS sy-vline 
WA_MEPO1210_DATA_STR-PEINH sy-vline 
WA_MEPO1210_DATA_STR-BPRME sy-vline 
WA_MEPO1210_DATA_STR-BANFN sy-vline 
WA_MEPO1210_DATA_STR-BNFPO sy-vline 
WA_MEPO1210_DATA_STR-KONNR sy-vline 
WA_MEPO1210_DATA_STR-KTPNR sy-vline 
WA_MEPO1210_DATA_STR-ANFNR sy-vline 
WA_MEPO1210_DATA_STR-ANFPS sy-vline 
WA_MEPO1210_DATA_STR-REBELN sy-vline 
WA_MEPO1210_DATA_STR-REBELP sy-vline      INTO ld_text SEPARATED BY SPACE.

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