ABAP Select data from SAP table Q0056 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q0056 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 Q0056. 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 Q0056 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_Q0056 TYPE STANDARD TABLE OF Q0056,
      WA_Q0056 TYPE Q0056,
      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: <Q0056> TYPE Q0056.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q0056.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q0056
  INTO TABLE IT_Q0056.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q0056
*  INTO TABLE @DATA(IT_Q00562).
*--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_Q0056 INDEX 1 INTO DATA(WA_Q00562).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q0056 ASSIGNING <Q0056>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q0056>-QUART = 1.
<Q0056>-QJAHR = 1.
<Q0056>-NAMEN = 1.
<Q0056>-GBDAT = 1.
<Q0056>-AUSVL = 1.

ENDLOOP.

LOOP AT IT_Q0056 INTO WA_Q0056.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q0056-AUSVG, sy-vline,
  WA_Q0056-ERMNR, sy-vline,
  WA_Q0056-LOEKZ, sy-vline,
  WA_Q0056-DOC, sy-vline,
  WA_Q0056-UVN, sy-vline,
  WA_Q0056-UBS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q0056 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_Q0056 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_Q0056 INTO WA_Q0056.


*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 GJAHR, internal->external for field QJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_Q0056-QJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_Q0056-QJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_Q0056-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_Q0056-GBDAT.
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_Q0056_STR, 
QUART TYPE STRING,
QJAHR TYPE STRING,
NAMEN TYPE STRING,
GBDAT TYPE STRING,
AUSVL TYPE STRING,
AUSVG TYPE STRING,
ERMNR TYPE STRING,
LOEKZ TYPE STRING,
DOC TYPE STRING,
UVN TYPE STRING,
UBS TYPE STRING,
ULD TYPE STRING,
ADR TYPE STRING,
PRT TYPE STRING,
DPL TYPE STRING,
ADT TYPE STRING,
ASVGR TYPE STRING,
AUSVA TYPE STRING,
ATEXT TYPE STRING,
BEFRG TYPE STRING,
BFTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q0056_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_Q0056_STR-QUART sy-vline 
WA_Q0056_STR-QJAHR sy-vline 
WA_Q0056_STR-NAMEN sy-vline 
WA_Q0056_STR-GBDAT sy-vline 
WA_Q0056_STR-AUSVL sy-vline 
WA_Q0056_STR-AUSVG sy-vline 
WA_Q0056_STR-ERMNR sy-vline 
WA_Q0056_STR-LOEKZ sy-vline 
WA_Q0056_STR-DOC sy-vline 
WA_Q0056_STR-UVN sy-vline 
WA_Q0056_STR-UBS sy-vline 
WA_Q0056_STR-ULD sy-vline 
WA_Q0056_STR-ADR sy-vline 
WA_Q0056_STR-PRT sy-vline 
WA_Q0056_STR-DPL sy-vline 
WA_Q0056_STR-ADT sy-vline 
WA_Q0056_STR-ASVGR sy-vline 
WA_Q0056_STR-AUSVA sy-vline 
WA_Q0056_STR-ATEXT sy-vline 
WA_Q0056_STR-BEFRG sy-vline 
WA_Q0056_STR-BFTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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