ABAP Select data from SAP table T876 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T876 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 T876. 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 T876 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_T876 TYPE STANDARD TABLE OF T876,
      WA_T876 TYPE T876,
      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: <T876> TYPE T876.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T876.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T876
  INTO TABLE IT_T876.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T876
*  INTO TABLE @DATA(IT_T8762).
*--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_T876 INDEX 1 INTO DATA(WA_T8762).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T876 ASSIGNING <T876>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T876>-MANDT = 1.
<T876>-DOCTY = 1.
<T876>-RVERS = 1.
<T876>-RLEVL = 1.
<T876>-PLACT = 1.

ENDLOOP.

LOOP AT IT_T876 INTO WA_T876.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T876-TCURR, sy-vline,
  WA_T876-LCURR, sy-vline,
  WA_T876-GCURR, sy-vline,
  WA_T876-BLSHI, sy-vline,
  WA_T876-PRLOI, sy-vline,
  WA_T876-STATI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T876 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_T876 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_T876 INTO WA_T876.


*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 ALPHA, internal->external for field DOCTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T876-DOCTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T876-DOCTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T876-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T876-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CLR_ITEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T876-CLR_ITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T876-CLR_ITEM.
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_T876_STR, 
MANDT TYPE STRING,
DOCTY TYPE STRING,
RVERS TYPE STRING,
RLEVL TYPE STRING,
PLACT TYPE STRING,
TCURR TYPE STRING,
LCURR TYPE STRING,
GCURR TYPE STRING,
BLSHI TYPE STRING,
PRLOI TYPE STRING,
STATI TYPE STRING,
BALAN TYPE STRING,
RESUL TYPE STRING,
DTAXD TYPE STRING,
DTAXC TYPE STRING,
NORNG TYPE STRING,
CUTYP TYPE STRING,
TAXIN TYPE STRING,
QNTIN TYPE STRING,
ADTIN TYPE STRING,
AUTRV TYPE STRING,
CLR_ITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T876_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_T876_STR-MANDT sy-vline 
WA_T876_STR-DOCTY sy-vline 
WA_T876_STR-RVERS sy-vline 
WA_T876_STR-RLEVL sy-vline 
WA_T876_STR-PLACT sy-vline 
WA_T876_STR-TCURR sy-vline 
WA_T876_STR-LCURR sy-vline 
WA_T876_STR-GCURR sy-vline 
WA_T876_STR-BLSHI sy-vline 
WA_T876_STR-PRLOI sy-vline 
WA_T876_STR-STATI sy-vline 
WA_T876_STR-BALAN sy-vline 
WA_T876_STR-RESUL sy-vline 
WA_T876_STR-DTAXD sy-vline 
WA_T876_STR-DTAXC sy-vline 
WA_T876_STR-NORNG sy-vline 
WA_T876_STR-CUTYP sy-vline 
WA_T876_STR-TAXIN sy-vline 
WA_T876_STR-QNTIN sy-vline 
WA_T876_STR-ADTIN sy-vline 
WA_T876_STR-AUTRV sy-vline 
WA_T876_STR-CLR_ITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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