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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/RETKINM
*  INTO TABLE @DATA(IT_/SAPAPO/RETKINM2).
*--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/RETKINM INDEX 1 INTO DATA(WA_/SAPAPO/RETKINM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/RETKINM>-KINMID = 1.
</SAPAPO/RETKINM>-RETID = 1.
</SAPAPO/RETKINM>-RETNAME = 1.
</SAPAPO/RETKINM>-SETNAME = 1.
</SAPAPO/RETKINM>-VBEDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/RETKINM-VENDATE, sy-vline,
  WA_/SAPAPO/RETKINM-BEDATE, sy-vline,
  WA_/SAPAPO/RETKINM-BESHIFT, sy-vline,
  WA_/SAPAPO/RETKINM-ENDATE, sy-vline,
  WA_/SAPAPO/RETKINM-ENSHIFT, sy-vline,
  WA_/SAPAPO/RETKINM-REFSHIFT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/RETKINM 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/RETKINM 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/RETKINM INTO WA_/SAPAPO/RETKINM.


*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/RETKINM_STR, 
KINMID TYPE STRING,
RETID TYPE STRING,
RETNAME TYPE STRING,
SETNAME TYPE STRING,
VBEDATE TYPE STRING,
VENDATE TYPE STRING,
BEDATE TYPE STRING,
BESHIFT TYPE STRING,
ENDATE TYPE STRING,
ENSHIFT TYPE STRING,
REFSHIFT TYPE STRING,
PNGUID TYPE STRING,
KNOBJID TYPE STRING,
RETDESCR TYPE STRING,
AGGR TYPE STRING,
MINKINM TYPE STRING,
MAXKINM TYPE STRING,
NUPOS TYPE STRING,
WKINM TYPE STRING,
IRRELEVANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/RETKINM_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/RETKINM_STR-KINMID sy-vline 
WA_/SAPAPO/RETKINM_STR-RETID sy-vline 
WA_/SAPAPO/RETKINM_STR-RETNAME sy-vline 
WA_/SAPAPO/RETKINM_STR-SETNAME sy-vline 
WA_/SAPAPO/RETKINM_STR-VBEDATE sy-vline 
WA_/SAPAPO/RETKINM_STR-VENDATE sy-vline 
WA_/SAPAPO/RETKINM_STR-BEDATE sy-vline 
WA_/SAPAPO/RETKINM_STR-BESHIFT sy-vline 
WA_/SAPAPO/RETKINM_STR-ENDATE sy-vline 
WA_/SAPAPO/RETKINM_STR-ENSHIFT sy-vline 
WA_/SAPAPO/RETKINM_STR-REFSHIFT sy-vline 
WA_/SAPAPO/RETKINM_STR-PNGUID sy-vline 
WA_/SAPAPO/RETKINM_STR-KNOBJID sy-vline 
WA_/SAPAPO/RETKINM_STR-RETDESCR sy-vline 
WA_/SAPAPO/RETKINM_STR-AGGR sy-vline 
WA_/SAPAPO/RETKINM_STR-MINKINM sy-vline 
WA_/SAPAPO/RETKINM_STR-MAXKINM sy-vline 
WA_/SAPAPO/RETKINM_STR-NUPOS sy-vline 
WA_/SAPAPO/RETKINM_STR-WKINM sy-vline 
WA_/SAPAPO/RETKINM_STR-IRRELEVANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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