ABAP Select data from SAP table T7AR81 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7AR81 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 T7AR81. 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 T7AR81 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_T7AR81 TYPE STANDARD TABLE OF T7AR81,
      WA_T7AR81 TYPE T7AR81,
      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: <T7AR81> TYPE T7AR81.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7AR81.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7AR81
  INTO TABLE IT_T7AR81.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7AR81
*  INTO TABLE @DATA(IT_T7AR812).
*--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_T7AR81 INDEX 1 INTO DATA(WA_T7AR812).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7AR81 ASSIGNING <T7AR81>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7AR81>-MANDT = 1.
<T7AR81>-BUKRS = 1.
<T7AR81>-FECIN = 1.
<T7AR81>-PERNR = 1.
<T7AR81>-CLAVE = 1.

ENDLOOP.

LOOP AT IT_T7AR81 INTO WA_T7AR81.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7AR81-SUBTY, sy-vline,
  WA_T7AR81-OBJPS, sy-vline,
  WA_T7AR81-NOVED, sy-vline,
  WA_T7AR81-CUILC, sy-vline,
  WA_T7AR81-APELC, sy-vline,
  WA_T7AR81-APELL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7AR81 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_T7AR81 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_T7AR81 INTO WA_T7AR81.


*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_T7AR81_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
FECIN TYPE STRING,
PERNR TYPE STRING,
CLAVE TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
NOVED TYPE STRING,
CUILC TYPE STRING,
APELC TYPE STRING,
APELL TYPE STRING,
NOMBS TYPE STRING,
TIDOC TYPE STRING,
NUDOC TYPE STRING,
FENAC TYPE STRING,
CSEXO TYPE STRING,
CALLE TYPE STRING,
NUMER TYPE STRING,
NPISO TYPE STRING,
DEPAR TYPE STRING,
LOCAL TYPE STRING,
CODPO TYPE STRING,
CODPR TYPE STRING,
NACIO TYPE STRING,
CIVIL TYPE STRING,
DISCA TYPE STRING,
FRELE TYPE STRING,
CODPA TYPE STRING,
CBAJA TYPE STRING,
OBRAS TYPE STRING,
FALTI TYPE STRING,
SIREV TYPE STRING,
DOMEX TYPE STRING,
ECUIT TYPE STRING,
FCUIL TYPE STRING,
GENAF TYPE STRING,
ESCOL TYPE STRING,
CUANO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7AR81_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_T7AR81_STR-MANDT sy-vline 
WA_T7AR81_STR-BUKRS sy-vline 
WA_T7AR81_STR-FECIN sy-vline 
WA_T7AR81_STR-PERNR sy-vline 
WA_T7AR81_STR-CLAVE sy-vline 
WA_T7AR81_STR-SUBTY sy-vline 
WA_T7AR81_STR-OBJPS sy-vline 
WA_T7AR81_STR-NOVED sy-vline 
WA_T7AR81_STR-CUILC sy-vline 
WA_T7AR81_STR-APELC sy-vline 
WA_T7AR81_STR-APELL sy-vline 
WA_T7AR81_STR-NOMBS sy-vline 
WA_T7AR81_STR-TIDOC sy-vline 
WA_T7AR81_STR-NUDOC sy-vline 
WA_T7AR81_STR-FENAC sy-vline 
WA_T7AR81_STR-CSEXO sy-vline 
WA_T7AR81_STR-CALLE sy-vline 
WA_T7AR81_STR-NUMER sy-vline 
WA_T7AR81_STR-NPISO sy-vline 
WA_T7AR81_STR-DEPAR sy-vline 
WA_T7AR81_STR-LOCAL sy-vline 
WA_T7AR81_STR-CODPO sy-vline 
WA_T7AR81_STR-CODPR sy-vline 
WA_T7AR81_STR-NACIO sy-vline 
WA_T7AR81_STR-CIVIL sy-vline 
WA_T7AR81_STR-DISCA sy-vline 
WA_T7AR81_STR-FRELE sy-vline 
WA_T7AR81_STR-CODPA sy-vline 
WA_T7AR81_STR-CBAJA sy-vline 
WA_T7AR81_STR-OBRAS sy-vline 
WA_T7AR81_STR-FALTI sy-vline 
WA_T7AR81_STR-SIREV sy-vline 
WA_T7AR81_STR-DOMEX sy-vline 
WA_T7AR81_STR-ECUIT sy-vline 
WA_T7AR81_STR-FCUIL sy-vline 
WA_T7AR81_STR-GENAF sy-vline 
WA_T7AR81_STR-ESCOL sy-vline 
WA_T7AR81_STR-CUANO sy-vline      INTO ld_text SEPARATED BY SPACE.

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