ABAP Select data from SAP table Q0201 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q0201 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 Q0201. 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 Q0201 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_Q0201 TYPE STANDARD TABLE OF Q0201,
      WA_Q0201 TYPE Q0201,
      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: <Q0201> TYPE Q0201.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q0201.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q0201
  INTO TABLE IT_Q0201.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q0201
*  INTO TABLE @DATA(IT_Q02012).
*--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_Q0201 INDEX 1 INTO DATA(WA_Q02012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q0201 ASSIGNING <Q0201>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q0201>-ANGRP = 1.
<Q0201>-HANSP = 1.
<Q0201>-AANSP = 1.
<Q0201>-MODBV = 1.
<Q0201>-LURSP = 1.

ENDLOOP.

LOOP AT IT_Q0201 INTO WA_Q0201.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q0201-NAREL, sy-vline,
  WA_Q0201-LGART, sy-vline,
  WA_Q0201-BETRG, sy-vline,
  WA_Q0201-APDAT, sy-vline,
  WA_Q0201-LTRGR, sy-vline,
  WA_Q0201-LFDNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q0201 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_Q0201 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_Q0201 INTO WA_Q0201.


*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_Q0201_STR, 
ANGRP TYPE STRING,
HANSP TYPE STRING,
AANSP TYPE STRING,
MODBV TYPE STRING,
LURSP TYPE STRING,
NAREL TYPE STRING,
LGART TYPE STRING,
BETRG TYPE STRING,
APDAT TYPE STRING,
LTRGR TYPE STRING,
LFDNR TYPE STRING,
ANTYP TYPE STRING,
ANSPR TYPE STRING,
SUMME TYPE STRING,
ABREL TYPE STRING,
TOTAL TYPE STRING,
SEQNO TYPE STRING,
ADSUM TYPE STRING,
STEXT TYPE STRING,
RNATX TYPE STRING,
AVFTX TYPE STRING,
BUTXT TYPE STRING,
SELEC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q0201_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_Q0201_STR-ANGRP sy-vline 
WA_Q0201_STR-HANSP sy-vline 
WA_Q0201_STR-AANSP sy-vline 
WA_Q0201_STR-MODBV sy-vline 
WA_Q0201_STR-LURSP sy-vline 
WA_Q0201_STR-NAREL sy-vline 
WA_Q0201_STR-LGART sy-vline 
WA_Q0201_STR-BETRG sy-vline 
WA_Q0201_STR-APDAT sy-vline 
WA_Q0201_STR-LTRGR sy-vline 
WA_Q0201_STR-LFDNR sy-vline 
WA_Q0201_STR-ANTYP sy-vline 
WA_Q0201_STR-ANSPR sy-vline 
WA_Q0201_STR-SUMME sy-vline 
WA_Q0201_STR-ABREL sy-vline 
WA_Q0201_STR-TOTAL sy-vline 
WA_Q0201_STR-SEQNO sy-vline 
WA_Q0201_STR-ADSUM sy-vline 
WA_Q0201_STR-STEXT sy-vline 
WA_Q0201_STR-RNATX sy-vline 
WA_Q0201_STR-AVFTX sy-vline 
WA_Q0201_STR-BUTXT sy-vline 
WA_Q0201_STR-SELEC sy-vline      INTO ld_text SEPARATED BY SPACE.

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