ABAP Select data from SAP table PYLOP_KK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PYLOP_KK
*  INTO TABLE @DATA(IT_PYLOP_KK2).
*--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_PYLOP_KK INDEX 1 INTO DATA(WA_PYLOP_KK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PYLOP_KK>-OPBEL = 1.
<PYLOP_KK>-OPUPW = 1.
<PYLOP_KK>-OPUPK = 1.
<PYLOP_KK>-OPUPZ = 1.
<PYLOP_KK>-LOOBJ1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PYLOP_KK-FDATE, sy-vline,
  WA_PYLOP_KK-TDATE, sy-vline,
  WA_PYLOP_KK-DURATION, sy-vline,
  WA_PYLOP_KK-VKONT, sy-vline,
  WA_PYLOP_KK-GPART, sy-vline,
  WA_PYLOP_KK-VTREF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PYLOP_KK 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_PYLOP_KK 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_PYLOP_KK INTO WA_PYLOP_KK.


*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 ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PYLOP_KK-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYLOP_KK-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PYLOP_KK-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYLOP_KK-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PYLOP_KK-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYLOP_KK-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PYLOP_KK-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYLOP_KK-VTREF.
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_PYLOP_KK_STR, 
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
LOOBJ1 TYPE STRING,
FDATE TYPE STRING,
TDATE TYPE STRING,
DURATION TYPE STRING,
VKONT TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
TEXT TYPE STRING,
LOTYP TYPE STRING,
LOCKR TYPE STRING,
LRTXT TYPE STRING,
VKTYP TYPE STRING,
ADATUM TYPE STRING,
LFDNR TYPE STRING,
BUKRS TYPE STRING,
SPART TYPE STRING,
HVORG TYPE STRING,
PYMET TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
LONUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PYLOP_KK_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_PYLOP_KK_STR-OPBEL sy-vline 
WA_PYLOP_KK_STR-OPUPW sy-vline 
WA_PYLOP_KK_STR-OPUPK sy-vline 
WA_PYLOP_KK_STR-OPUPZ sy-vline 
WA_PYLOP_KK_STR-LOOBJ1 sy-vline 
WA_PYLOP_KK_STR-FDATE sy-vline 
WA_PYLOP_KK_STR-TDATE sy-vline 
WA_PYLOP_KK_STR-DURATION sy-vline 
WA_PYLOP_KK_STR-VKONT sy-vline 
WA_PYLOP_KK_STR-GPART sy-vline 
WA_PYLOP_KK_STR-VTREF sy-vline 
WA_PYLOP_KK_STR-TEXT sy-vline 
WA_PYLOP_KK_STR-LOTYP sy-vline 
WA_PYLOP_KK_STR-LOCKR sy-vline 
WA_PYLOP_KK_STR-LRTXT sy-vline 
WA_PYLOP_KK_STR-VKTYP sy-vline 
WA_PYLOP_KK_STR-ADATUM sy-vline 
WA_PYLOP_KK_STR-LFDNR sy-vline 
WA_PYLOP_KK_STR-BUKRS sy-vline 
WA_PYLOP_KK_STR-SPART sy-vline 
WA_PYLOP_KK_STR-HVORG sy-vline 
WA_PYLOP_KK_STR-PYMET sy-vline 
WA_PYLOP_KK_STR-BETRW sy-vline 
WA_PYLOP_KK_STR-WAERS sy-vline 
WA_PYLOP_KK_STR-LONUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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