ABAP Select data from SAP table AUAK into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AUAK
*  INTO TABLE @DATA(IT_AUAK2).
*--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_AUAK INDEX 1 INTO DATA(WA_AUAK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AUAK>-MANDT = 1.
<AUAK>-BELNR = 1.
<AUAK>-KOKRS = 1.
<AUAK>-BUDAT = 1.
<AUAK>-BZDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AUAK-CPUDT, sy-vline,
  WA_AUAK-WSDAT, sy-vline,
  WA_AUAK-KURST, sy-vline,
  WA_AUAK-GJAHR, sy-vline,
  WA_AUAK-PERIO, sy-vline,
  WA_AUAK-PERBZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AUAK 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_AUAK 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_AUAK INTO WA_AUAK.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_AUAK-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUAK-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERBZ, internal->external for field PERBZ
CALL FUNCTION 'CONVERSION_EXIT_PERBZ_OUTPUT'
  EXPORTING
    input =                      WA_AUAK-PERBZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUAK-PERBZ.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field GEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AUAK-GEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUAK-GEINH.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GJAHR, internal->external for field BUGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_AUAK-BUGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUAK-BUGJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AUAK-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUAK-LEDNR.
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_AUAK_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
KOKRS TYPE STRING,
BUDAT TYPE STRING,
BZDAT TYPE STRING,
CPUDT TYPE STRING,
WSDAT TYPE STRING,
KURST TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
PERBZ TYPE STRING,
OBJNR TYPE STRING,
STFLG TYPE STRING,
STBEL TYPE STRING,
STOKZ TYPE STRING,
ABSCH TYPE STRING,
URSCH TYPE STRING,
GMENG TYPE STRING,
GEINH TYPE STRING,
ANALG TYPE STRING,
ABRNR TYPE STRING,
KSTAR TYPE STRING,
ERSCH TYPE STRING,
SAPRL TYPE STRING,
AWSYS TYPE STRING,
CO_VAART TYPE STRING,
BUPERIO TYPE STRING,
BUGJAHR TYPE STRING,
TIMESTMP TYPE STRING,
PERIO_F TYPE STRING,
PERIO_T TYPE STRING,
VERSN TYPE STRING,
WRTTP TYPE STRING,
BLDAT TYPE STRING,
ADDCURR TYPE STRING,
LEDNR TYPE STRING,
LDGRP TYPE STRING,
PERIV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AUAK_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_AUAK_STR-MANDT sy-vline 
WA_AUAK_STR-BELNR sy-vline 
WA_AUAK_STR-KOKRS sy-vline 
WA_AUAK_STR-BUDAT sy-vline 
WA_AUAK_STR-BZDAT sy-vline 
WA_AUAK_STR-CPUDT sy-vline 
WA_AUAK_STR-WSDAT sy-vline 
WA_AUAK_STR-KURST sy-vline 
WA_AUAK_STR-GJAHR sy-vline 
WA_AUAK_STR-PERIO sy-vline 
WA_AUAK_STR-PERBZ sy-vline 
WA_AUAK_STR-OBJNR sy-vline 
WA_AUAK_STR-STFLG sy-vline 
WA_AUAK_STR-STBEL sy-vline 
WA_AUAK_STR-STOKZ sy-vline 
WA_AUAK_STR-ABSCH sy-vline 
WA_AUAK_STR-URSCH sy-vline 
WA_AUAK_STR-GMENG sy-vline 
WA_AUAK_STR-GEINH sy-vline 
WA_AUAK_STR-ANALG sy-vline 
WA_AUAK_STR-ABRNR sy-vline 
WA_AUAK_STR-KSTAR sy-vline 
WA_AUAK_STR-ERSCH sy-vline 
WA_AUAK_STR-SAPRL sy-vline 
WA_AUAK_STR-AWSYS sy-vline 
WA_AUAK_STR-CO_VAART sy-vline 
WA_AUAK_STR-BUPERIO sy-vline 
WA_AUAK_STR-BUGJAHR sy-vline 
WA_AUAK_STR-TIMESTMP sy-vline 
WA_AUAK_STR-PERIO_F sy-vline 
WA_AUAK_STR-PERIO_T sy-vline 
WA_AUAK_STR-VERSN sy-vline 
WA_AUAK_STR-WRTTP sy-vline 
WA_AUAK_STR-BLDAT sy-vline 
WA_AUAK_STR-ADDCURR sy-vline 
WA_AUAK_STR-LEDNR sy-vline 
WA_AUAK_STR-LDGRP sy-vline 
WA_AUAK_STR-PERIV sy-vline      INTO ld_text SEPARATED BY SPACE.

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