ABAP Select data from SAP table T880B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T880B 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 T880B. 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 T880B 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_T880B TYPE STANDARD TABLE OF T880B,
      WA_T880B TYPE T880B,
      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: <T880B> TYPE T880B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T880B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T880B
  INTO TABLE IT_T880B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T880B
*  INTO TABLE @DATA(IT_T880B2).
*--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_T880B INDEX 1 INTO DATA(WA_T880B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T880B ASSIGNING <T880B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T880B>-MANDT = 1.
<T880B>-RVERS = 1.
<T880B>-RCOMP = 1.
<T880B>-RYEAR = 1.
<T880B>-POPER = 1.

ENDLOOP.

LOOP AT IT_T880B INTO WA_T880B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T880B-UMRGR, sy-vline,
  WA_T880B-KAPGR, sy-vline,
  WA_T880B-ZGEGR, sy-vline,
  WA_T880B-UMGGR, sy-vline,
  WA_T880B-FUNCT, sy-vline,
  WA_T880B-ROUND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T880B 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_T880B 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_T880B INTO WA_T880B.


*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 RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T880B-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T880B-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T880B-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T880B-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T880B-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T880B-RYEAR.
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_T880B_STR, 
MANDT TYPE STRING,
RVERS TYPE STRING,
RCOMP TYPE STRING,
RYEAR TYPE STRING,
POPER TYPE STRING,
UMRGR TYPE STRING,
KAPGR TYPE STRING,
ZGEGR TYPE STRING,
UMGGR TYPE STRING,
FUNCT TYPE STRING,
ROUND TYPE STRING,
OCURR TYPE STRING,
NCURR TYPE STRING,
SHIFT TYPE STRING,
FOCTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T880B_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_T880B_STR-MANDT sy-vline 
WA_T880B_STR-RVERS sy-vline 
WA_T880B_STR-RCOMP sy-vline 
WA_T880B_STR-RYEAR sy-vline 
WA_T880B_STR-POPER sy-vline 
WA_T880B_STR-UMRGR sy-vline 
WA_T880B_STR-KAPGR sy-vline 
WA_T880B_STR-ZGEGR sy-vline 
WA_T880B_STR-UMGGR sy-vline 
WA_T880B_STR-FUNCT sy-vline 
WA_T880B_STR-ROUND sy-vline 
WA_T880B_STR-OCURR sy-vline 
WA_T880B_STR-NCURR sy-vline 
WA_T880B_STR-SHIFT sy-vline 
WA_T880B_STR-FOCTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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