ABAP Select data from SAP table /SAPAPO/QTCHKREQ_DISPLAY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/QTCHKREQ_DISPLAY 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 /SAPAPO/QTCHKREQ_DISPLAY. 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 /SAPAPO/QTCHKREQ_DISPLAY 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_/SAPAPO/QTCHKREQ_DISPLAY TYPE STANDARD TABLE OF /SAPAPO/QTCHKREQ_DISPLAY,
      WA_/SAPAPO/QTCHKREQ_DISPLAY TYPE /SAPAPO/QTCHKREQ_DISPLAY,
      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: </SAPAPO/QTCHKREQ_DISPLAY> TYPE /SAPAPO/QTCHKREQ_DISPLAY.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/QTCHKREQ_DISPLAY
  INTO TABLE IT_/SAPAPO/QTCHKREQ_DISPLAY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/QTCHKREQ_DISPLAY
*  INTO TABLE @DATA(IT_/SAPAPO/QTCHKREQ_DISPLAY2).
*--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_/SAPAPO/QTCHKREQ_DISPLAY INDEX 1 INTO DATA(WA_/SAPAPO/QTCHKREQ_DISPLAY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/QTCHKREQ_DISPLAY ASSIGNING </SAPAPO/QTCHKREQ_DISPLAY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/QTCHKREQ_DISPLAY>-PEGID = 1.
</SAPAPO/QTCHKREQ_DISPLAY>-MATID = 1.
</SAPAPO/QTCHKREQ_DISPLAY>-LOCID = 1.
</SAPAPO/QTCHKREQ_DISPLAY>-ACCID = 1.
</SAPAPO/QTCHKREQ_DISPLAY>-SUBLOC = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/QTCHKREQ_DISPLAY INTO WA_/SAPAPO/QTCHKREQ_DISPLAY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/QTCHKREQ_DISPLAY-VERSION, sy-vline,
  WA_/SAPAPO/QTCHKREQ_DISPLAY-CAT, sy-vline,
  WA_/SAPAPO/QTCHKREQ_DISPLAY-ORDID, sy-vline,
  WA_/SAPAPO/QTCHKREQ_DISPLAY-TMPFLG, sy-vline,
  WA_/SAPAPO/QTCHKREQ_DISPLAY-DELNR, sy-vline,
  WA_/SAPAPO/QTCHKREQ_DISPLAY-DELPS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/QTCHKREQ_DISPLAY 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_/SAPAPO/QTCHKREQ_DISPLAY 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_/SAPAPO/QTCHKREQ_DISPLAY INTO WA_/SAPAPO/QTCHKREQ_DISPLAY.


*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_/SAPAPO/QTCHKREQ_DISPLAY_STR, 
PEGID TYPE STRING,
MATID TYPE STRING,
LOCID TYPE STRING,
ACCID TYPE STRING,
SUBLOC TYPE STRING,
VERSION TYPE STRING,
CAT TYPE STRING,
ORDID TYPE STRING,
TMPFLG TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
POSGUID TYPE STRING,
CHMOD TYPE STRING,
PRREG TYPE STRING,
TRTYP TYPE STRING,
RESMOD TYPE STRING,
DELTAIND TYPE STRING,
UPDIND TYPE STRING,
CHKIND TYPE STRING,
DMALL TYPE STRING,
TMSFR TYPE STRING,
TMSTO TYPE STRING,
ALLRN TYPE STRING,
ATPRN TYPE STRING,
PLNRN TYPE STRING,
CUOBJ TYPE STRING,
PRODTYP TYPE STRING,
BOMEX TYPE STRING,
BOMLVL TYPE STRING,
REQIDX TYPE STRING,
IDX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/QTCHKREQ_DISPLAY_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_/SAPAPO/QTCHKREQ_DISPLAY_STR-PEGID sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-MATID sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-LOCID sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-ACCID sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-SUBLOC sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-VERSION sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-CAT sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-ORDID sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-TMPFLG sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-DELNR sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-DELPS sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-POSGUID sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-CHMOD sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-PRREG sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-TRTYP sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-RESMOD sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-DELTAIND sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-UPDIND sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-CHKIND sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-DMALL sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-TMSFR sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-TMSTO sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-ALLRN sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-ATPRN sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-PLNRN sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-CUOBJ sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-PRODTYP sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-BOMEX sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-BOMLVL sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-REQIDX sy-vline 
WA_/SAPAPO/QTCHKREQ_DISPLAY_STR-IDX sy-vline      INTO ld_text SEPARATED BY SPACE.

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