ABAP Select data from SAP table Q556R into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q556R 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 Q556R. 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 Q556R 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_Q556R TYPE STANDARD TABLE OF Q556R,
      WA_Q556R TYPE Q556R,
      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: <Q556R> TYPE Q556R.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q556R.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q556R
  INTO TABLE IT_Q556R.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q556R
*  INTO TABLE @DATA(IT_Q556R2).
*--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_Q556R INDEX 1 INTO DATA(WA_Q556R2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q556R ASSIGNING <Q556R>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q556R>-ZEINH_HOURS = 1.
<Q556R>-ZEINH_DAYS = 1.
<Q556R>-VABEG = 1.
<Q556R>-VAEND = 1.
<Q556R>-DEBEG = 1.

ENDLOOP.

LOOP AT IT_Q556R INTO WA_Q556R.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q556R-DEEND, sy-vline,
  WA_Q556R-TIBEG, sy-vline,
  WA_Q556R-TIEND, sy-vline,
  WA_Q556R-QTSEQ, sy-vline,
  WA_Q556R-VABUP, sy-vline,
  WA_Q556R-VABDO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q556R 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_Q556R 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_Q556R INTO WA_Q556R.


*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_Q556R_STR, 
ZEINH_HOURS TYPE STRING,
ZEINH_DAYS TYPE STRING,
VABEG TYPE STRING,
VAEND TYPE STRING,
DEBEG TYPE STRING,
DEEND TYPE STRING,
TIBEG TYPE STRING,
TIEND TYPE STRING,
QTSEQ TYPE STRING,
VABUP TYPE STRING,
VABDO TYPE STRING,
VAEUP TYPE STRING,
VAEDO TYPE STRING,
DEBUP TYPE STRING,
DEBDO TYPE STRING,
DEEUP TYPE STRING,
DEEDO TYPE STRING,
TIBUP TYPE STRING,
TIBDO TYPE STRING,
TIEUP TYPE STRING,
TIEDO TYPE STRING,
ABWKO TYPE STRING,
ANWKO TYPE STRING,
KTEXT TYPE STRING,
ETEXT TYPE STRING,
QTTPR_NO TYPE STRING,
QTTPR_UP TYPE STRING,
QTTPR_DO TYPE STRING,
QTTPR_CE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q556R_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_Q556R_STR-ZEINH_HOURS sy-vline 
WA_Q556R_STR-ZEINH_DAYS sy-vline 
WA_Q556R_STR-VABEG sy-vline 
WA_Q556R_STR-VAEND sy-vline 
WA_Q556R_STR-DEBEG sy-vline 
WA_Q556R_STR-DEEND sy-vline 
WA_Q556R_STR-TIBEG sy-vline 
WA_Q556R_STR-TIEND sy-vline 
WA_Q556R_STR-QTSEQ sy-vline 
WA_Q556R_STR-VABUP sy-vline 
WA_Q556R_STR-VABDO sy-vline 
WA_Q556R_STR-VAEUP sy-vline 
WA_Q556R_STR-VAEDO sy-vline 
WA_Q556R_STR-DEBUP sy-vline 
WA_Q556R_STR-DEBDO sy-vline 
WA_Q556R_STR-DEEUP sy-vline 
WA_Q556R_STR-DEEDO sy-vline 
WA_Q556R_STR-TIBUP sy-vline 
WA_Q556R_STR-TIBDO sy-vline 
WA_Q556R_STR-TIEUP sy-vline 
WA_Q556R_STR-TIEDO sy-vline 
WA_Q556R_STR-ABWKO sy-vline 
WA_Q556R_STR-ANWKO sy-vline 
WA_Q556R_STR-KTEXT sy-vline 
WA_Q556R_STR-ETEXT sy-vline 
WA_Q556R_STR-QTTPR_NO sy-vline 
WA_Q556R_STR-QTTPR_UP sy-vline 
WA_Q556R_STR-QTTPR_DO sy-vline 
WA_Q556R_STR-QTTPR_CE sy-vline      INTO ld_text SEPARATED BY SPACE.

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