ABAP Select data from SAP table MSED7START into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MSED7START 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 MSED7START. 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 MSED7START 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_MSED7START TYPE STANDARD TABLE OF MSED7START,
      WA_MSED7START TYPE MSED7START,
      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: <MSED7START> TYPE MSED7START.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MSED7START.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MSED7START
  INTO TABLE IT_MSED7START.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSED7START
*  INTO TABLE @DATA(IT_MSED7START2).
*--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_MSED7START INDEX 1 INTO DATA(WA_MSED7START2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MSED7START ASSIGNING <MSED7START>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSED7START>-SEL_EXIDOC = 1.
<MSED7START>-SEL_IDOCTP = 1.
<MSED7START>-SEL_MSGTYP = 1.
<MSED7START>-SEL_FILNAM = 1.
<MSED7START>-SEL_NOTMPL = 1.

ENDLOOP.

LOOP AT IT_MSED7START INTO WA_MSED7START.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSED7START-EXIDOCNUM, sy-vline,
  WA_MSED7START-IDOCTYP, sy-vline,
  WA_MSED7START-CIMTYP, sy-vline,
  WA_MSED7START-MESSAGETYP, sy-vline,
  WA_MSED7START-FILENAME, sy-vline,
  WA_MSED7START-IDOCDSCR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSED7START 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_MSED7START 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_MSED7START INTO WA_MSED7START.


*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_MSED7START_STR, 
SEL_EXIDOC TYPE STRING,
SEL_IDOCTP TYPE STRING,
SEL_MSGTYP TYPE STRING,
SEL_FILNAM TYPE STRING,
SEL_NOTMPL TYPE STRING,
EXIDOCNUM TYPE STRING,
IDOCTYP TYPE STRING,
CIMTYP TYPE STRING,
MESSAGETYP TYPE STRING,
FILENAME TYPE STRING,
IDOCDSCR TYPE STRING,
CIMDSCR TYPE STRING,
MSGDSCR TYPE STRING,
UNICODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSED7START_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_MSED7START_STR-SEL_EXIDOC sy-vline 
WA_MSED7START_STR-SEL_IDOCTP sy-vline 
WA_MSED7START_STR-SEL_MSGTYP sy-vline 
WA_MSED7START_STR-SEL_FILNAM sy-vline 
WA_MSED7START_STR-SEL_NOTMPL sy-vline 
WA_MSED7START_STR-EXIDOCNUM sy-vline 
WA_MSED7START_STR-IDOCTYP sy-vline 
WA_MSED7START_STR-CIMTYP sy-vline 
WA_MSED7START_STR-MESSAGETYP sy-vline 
WA_MSED7START_STR-FILENAME sy-vline 
WA_MSED7START_STR-IDOCDSCR sy-vline 
WA_MSED7START_STR-CIMDSCR sy-vline 
WA_MSED7START_STR-MSGDSCR sy-vline 
WA_MSED7START_STR-UNICODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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