ABAP Select data from SAP table TRR_AAO_ALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRR_AAO_ALL
*  INTO TABLE @DATA(IT_TRR_AAO_ALL2).
*--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_TRR_AAO_ALL INDEX 1 INTO DATA(WA_TRR_AAO_ALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRR_AAO_ALL>-MANDT = 1.
<TRR_AAO_ALL>-COST_OBJECT = 1.
<TRR_AAO_ALL>-ACCASTY = 1.
<TRR_AAO_ALL>-BUKRS = 1.
<TRR_AAO_ALL>-KOKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRR_AAO_ALL-WERKS, sy-vline,
  WA_TRR_AAO_ALL-PRCTR, sy-vline,
  WA_TRR_AAO_ALL-ABGSL, sy-vline,
  WA_TRR_AAO_ALL-RFLG1, sy-vline,
  WA_TRR_AAO_ALL-FAKKZ, sy-vline,
  WA_TRR_AAO_ALL-KTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRR_AAO_ALL 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_TRR_AAO_ALL 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_TRR_AAO_ALL INTO WA_TRR_AAO_ALL.


*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 FTRAO, internal->external for field COST_OBJECT
CALL FUNCTION 'CONVERSION_EXIT_FTRAO_OUTPUT'
  EXPORTING
    input =                      WA_TRR_AAO_ALL-COST_OBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRR_AAO_ALL-COST_OBJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRR_AAO_ALL-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRR_AAO_ALL-PRCTR.
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_TRR_AAO_ALL_STR, 
MANDT TYPE STRING,
COST_OBJECT TYPE STRING,
ACCASTY TYPE STRING,
BUKRS TYPE STRING,
KOKRS TYPE STRING,
WERKS TYPE STRING,
PRCTR TYPE STRING,
ABGSL TYPE STRING,
RFLG1 TYPE STRING,
FAKKZ TYPE STRING,
KTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRR_AAO_ALL_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_TRR_AAO_ALL_STR-MANDT sy-vline 
WA_TRR_AAO_ALL_STR-COST_OBJECT sy-vline 
WA_TRR_AAO_ALL_STR-ACCASTY sy-vline 
WA_TRR_AAO_ALL_STR-BUKRS sy-vline 
WA_TRR_AAO_ALL_STR-KOKRS sy-vline 
WA_TRR_AAO_ALL_STR-WERKS sy-vline 
WA_TRR_AAO_ALL_STR-PRCTR sy-vline 
WA_TRR_AAO_ALL_STR-ABGSL sy-vline 
WA_TRR_AAO_ALL_STR-RFLG1 sy-vline 
WA_TRR_AAO_ALL_STR-FAKKZ sy-vline 
WA_TRR_AAO_ALL_STR-KTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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