ABAP Select data from SAP table H_7RUMN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP H_7RUMN 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 H_7RUMN. 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 H_7RUMN 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_H_7RUMN TYPE STANDARD TABLE OF H_7RUMN,
      WA_H_7RUMN TYPE H_7RUMN,
      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: <H_7RUMN> TYPE H_7RUMN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_H_7RUMN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM H_7RUMN
  INTO TABLE IT_H_7RUMN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM H_7RUMN
*  INTO TABLE @DATA(IT_H_7RUMN2).
*--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_H_7RUMN INDEX 1 INTO DATA(WA_H_7RUMN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_H_7RUMN ASSIGNING <H_7RUMN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<H_7RUMN>-MANDT = 1.
<H_7RUMN>-NCHMC = 1.
<H_7RUMN>-VNAMC = 1.
<H_7RUMN>-MNAMC = 1.
<H_7RUMN>-NACHN = 1.

ENDLOOP.

LOOP AT IT_H_7RUMN INTO WA_H_7RUMN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_H_7RUMN-VORNA, sy-vline,
  WA_H_7RUMN-MIDNA, sy-vline,
  WA_H_7RUMN-TITEL, sy-vline,
  WA_H_7RUMN-GBDAT, sy-vline,
  WA_H_7RUMN-PERNR, sy-vline,
  WA_H_7RUMN-BEGDA_0002, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_H_7RUMN 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_H_7RUMN 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_H_7RUMN INTO WA_H_7RUMN.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_H_7RUMN-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_H_7RUMN-GBDAT.
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_H_7RUMN_STR, 
MANDT TYPE STRING,
NCHMC TYPE STRING,
VNAMC TYPE STRING,
MNAMC TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
MIDNA TYPE STRING,
TITEL TYPE STRING,
GBDAT TYPE STRING,
PERNR TYPE STRING,
BEGDA_0002 TYPE STRING,
ENDDA_0002 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_H_7RUMN_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_H_7RUMN_STR-MANDT sy-vline 
WA_H_7RUMN_STR-NCHMC sy-vline 
WA_H_7RUMN_STR-VNAMC sy-vline 
WA_H_7RUMN_STR-MNAMC sy-vline 
WA_H_7RUMN_STR-NACHN sy-vline 
WA_H_7RUMN_STR-VORNA sy-vline 
WA_H_7RUMN_STR-MIDNA sy-vline 
WA_H_7RUMN_STR-TITEL sy-vline 
WA_H_7RUMN_STR-GBDAT sy-vline 
WA_H_7RUMN_STR-PERNR sy-vline 
WA_H_7RUMN_STR-BEGDA_0002 sy-vline 
WA_H_7RUMN_STR-ENDDA_0002 sy-vline      INTO ld_text SEPARATED BY SPACE.

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