ABAP Select data from SAP table RFC_AHE into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFC_AHE
*  INTO TABLE @DATA(IT_RFC_AHE2).
*--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_RFC_AHE INDEX 1 INTO DATA(WA_RFC_AHE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFC_AHE ASSIGNING <RFC_AHE>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFC_AHE>-ATEXT1 = 1.
<RFC_AHE>-LOCSYS = 1.
<RFC_AHE>-PERSCH = 1.
<RFC_AHE>-PERSARC = 1.
<RFC_AHE>-REFAO = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFC_AHE-GROUPNR, sy-vline,
WA_RFC_AHE-ONACCKZ, sy-vline,
WA_RFC_AHE-BUDEX, sy-vline,
WA_RFC_AHE-FDUDT, sy-vline,
WA_RFC_AHE-INVCNR, sy-vline,
WA_RFC_AHE-INVCDT, sy-vline.
ENDLOOP. *Add any further fields from structure WA_RFC_AHE 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_RFC_AHE 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_RFC_AHE INTO WA_RFC_AHE. *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_RFC_AHE_STR,
ATEXT1 TYPE STRING,
LOCSYS TYPE STRING,
PERSCH TYPE STRING,
PERSARC TYPE STRING,
REFAO TYPE STRING,
GROUPNR TYPE STRING,
ONACCKZ TYPE STRING,
BUDEX TYPE STRING,
FDUDT TYPE STRING,
INVCNR TYPE STRING,
INVCDT TYPE STRING,
INVCLC TYPE STRING,
PURONR TYPE STRING,
PURODT TYPE STRING,
PUROLC TYPE STRING,
CONTNR TYPE STRING,
CONTDT TYPE STRING,
CONTLC TYPE STRING,
CONTKZ TYPE STRING,
CONTDAT TYPE STRING,
CONTREG TYPE STRING,
DEMNR TYPE STRING,
DEMDT TYPE STRING,
DEMLC TYPE STRING,
FREPNR TYPE STRING,
FREPDT TYPE STRING,
FREPLC TYPE STRING,
REGLNR TYPE STRING,
REGLDT TYPE STRING,
REGLLC TYPE STRING,
AVISNR TYPE STRING,
AVISDT TYPE STRING,
AVISLC TYPE STRING,
OTHERNR TYPE STRING,
OTHERDT TYPE STRING,
OTHERLC TYPE STRING,END OF T_EKKO_STR. DATA: WA_RFC_AHE_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_RFC_AHE_STR-ATEXT1 sy-vline
WA_RFC_AHE_STR-LOCSYS sy-vline
WA_RFC_AHE_STR-PERSCH sy-vline
WA_RFC_AHE_STR-PERSARC sy-vline
WA_RFC_AHE_STR-REFAO sy-vline
WA_RFC_AHE_STR-GROUPNR sy-vline
WA_RFC_AHE_STR-ONACCKZ sy-vline
WA_RFC_AHE_STR-BUDEX sy-vline
WA_RFC_AHE_STR-FDUDT sy-vline
WA_RFC_AHE_STR-INVCNR sy-vline
WA_RFC_AHE_STR-INVCDT sy-vline
WA_RFC_AHE_STR-INVCLC sy-vline
WA_RFC_AHE_STR-PURONR sy-vline
WA_RFC_AHE_STR-PURODT sy-vline
WA_RFC_AHE_STR-PUROLC sy-vline
WA_RFC_AHE_STR-CONTNR sy-vline
WA_RFC_AHE_STR-CONTDT sy-vline
WA_RFC_AHE_STR-CONTLC sy-vline
WA_RFC_AHE_STR-CONTKZ sy-vline
WA_RFC_AHE_STR-CONTDAT sy-vline
WA_RFC_AHE_STR-CONTREG sy-vline
WA_RFC_AHE_STR-DEMNR sy-vline
WA_RFC_AHE_STR-DEMDT sy-vline
WA_RFC_AHE_STR-DEMLC sy-vline
WA_RFC_AHE_STR-FREPNR sy-vline
WA_RFC_AHE_STR-FREPDT sy-vline
WA_RFC_AHE_STR-FREPLC sy-vline
WA_RFC_AHE_STR-REGLNR sy-vline
WA_RFC_AHE_STR-REGLDT sy-vline
WA_RFC_AHE_STR-REGLLC sy-vline
WA_RFC_AHE_STR-AVISNR sy-vline
WA_RFC_AHE_STR-AVISDT sy-vline
WA_RFC_AHE_STR-AVISLC sy-vline
WA_RFC_AHE_STR-OTHERNR sy-vline
WA_RFC_AHE_STR-OTHERDT sy-vline
WA_RFC_AHE_STR-OTHERLC sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.