ABAP Select data from SAP table AQDBSF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AQDBSF
*  INTO TABLE @DATA(IT_AQDBSF2).
*--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_AQDBSF INDEX 1 INTO DATA(WA_AQDBSF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AQDBSF>-NUMB = 1.
<AQDBSF>-SGNA = 1.
<AQDBSF>-NAME = 1.
<AQDBSF>-TINDX = 1.
<AQDBSF>-TINDXU1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AQDBSF-TINDXU2, sy-vline,
  WA_AQDBSF-TYPE, sy-vline,
  WA_AQDBSF-OLENG, sy-vline,
  WA_AQDBSF-DECIMALS, sy-vline,
  WA_AQDBSF-ADDY, sy-vline,
  WA_AQDBSF-CURRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AQDBSF 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_AQDBSF 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_AQDBSF INTO WA_AQDBSF.


*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_AQDBSF_STR, 
NUMB TYPE STRING,
SGNA TYPE STRING,
NAME TYPE STRING,
TINDX TYPE STRING,
TINDXU1 TYPE STRING,
TINDXU2 TYPE STRING,
TYPE TYPE STRING,
OLENG TYPE STRING,
DECIMALS TYPE STRING,
ADDY TYPE STRING,
CURRY TYPE STRING,
GTYPE TYPE STRING,
OBJSEL TYPE STRING,
NO_SUM TYPE STRING,
IS_TEXT TYPE STRING,
TEXTSGNA TYPE STRING,
TEXTNAME TYPE STRING,
INTSORT TYPE STRING,
OBLIGATORY TYPE STRING,
NO_SELECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AQDBSF_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_AQDBSF_STR-NUMB sy-vline 
WA_AQDBSF_STR-SGNA sy-vline 
WA_AQDBSF_STR-NAME sy-vline 
WA_AQDBSF_STR-TINDX sy-vline 
WA_AQDBSF_STR-TINDXU1 sy-vline 
WA_AQDBSF_STR-TINDXU2 sy-vline 
WA_AQDBSF_STR-TYPE sy-vline 
WA_AQDBSF_STR-OLENG sy-vline 
WA_AQDBSF_STR-DECIMALS sy-vline 
WA_AQDBSF_STR-ADDY sy-vline 
WA_AQDBSF_STR-CURRY sy-vline 
WA_AQDBSF_STR-GTYPE sy-vline 
WA_AQDBSF_STR-OBJSEL sy-vline 
WA_AQDBSF_STR-NO_SUM sy-vline 
WA_AQDBSF_STR-IS_TEXT sy-vline 
WA_AQDBSF_STR-TEXTSGNA sy-vline 
WA_AQDBSF_STR-TEXTNAME sy-vline 
WA_AQDBSF_STR-INTSORT sy-vline 
WA_AQDBSF_STR-OBLIGATORY sy-vline 
WA_AQDBSF_STR-NO_SELECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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