ABAP Select data from SAP table PSKRL_ZL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSKRL_ZL
*  INTO TABLE @DATA(IT_PSKRL_ZL2).
*--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_PSKRL_ZL INDEX 1 INTO DATA(WA_PSKRL_ZL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSKRL_ZL>-ICZ = 1.
<PSKRL_ZL>-ICO = 1.
<PSKRL_ZL>-DIC = 1.
<PSKRL_ZL>-ICO_OR_DIC = 1.
<PSKRL_ZL>-NAZOV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSKRL_ZL-NAZOV2, sy-vline,
  WA_PSKRL_ZL-RCFO, sy-vline,
  WA_PSKRL_ZL-CPP, sy-vline,
  WA_PSKRL_ZL-RC_OR_CPP, sy-vline,
  WA_PSKRL_ZL-TYPZL, sy-vline,
  WA_PSKRL_ZL-KONTA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSKRL_ZL 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_PSKRL_ZL 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_PSKRL_ZL INTO WA_PSKRL_ZL.


*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_PSKRL_ZL_STR, 
ICZ TYPE STRING,
ICO TYPE STRING,
DIC TYPE STRING,
ICO_OR_DIC TYPE STRING,
NAZOV TYPE STRING,
NAZOV2 TYPE STRING,
RCFO TYPE STRING,
CPP TYPE STRING,
RC_OR_CPP TYPE STRING,
TYPZL TYPE STRING,
KONTA TYPE STRING,
TELEFON TYPE STRING,
FAX TYPE STRING,
EMAIL TYPE STRING,
ADRES TYPE STRING,
ULICA TYPE STRING,
SUPCI TYPE STRING,
ORICI TYPE STRING,
PSC TYPE STRING,
OBEC TYPE STRING,
ZIP TYPE STRING,
STAT TYPE STRING,
ZOSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSKRL_ZL_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_PSKRL_ZL_STR-ICZ sy-vline 
WA_PSKRL_ZL_STR-ICO sy-vline 
WA_PSKRL_ZL_STR-DIC sy-vline 
WA_PSKRL_ZL_STR-ICO_OR_DIC sy-vline 
WA_PSKRL_ZL_STR-NAZOV sy-vline 
WA_PSKRL_ZL_STR-NAZOV2 sy-vline 
WA_PSKRL_ZL_STR-RCFO sy-vline 
WA_PSKRL_ZL_STR-CPP sy-vline 
WA_PSKRL_ZL_STR-RC_OR_CPP sy-vline 
WA_PSKRL_ZL_STR-TYPZL sy-vline 
WA_PSKRL_ZL_STR-KONTA sy-vline 
WA_PSKRL_ZL_STR-TELEFON sy-vline 
WA_PSKRL_ZL_STR-FAX sy-vline 
WA_PSKRL_ZL_STR-EMAIL sy-vline 
WA_PSKRL_ZL_STR-ADRES sy-vline 
WA_PSKRL_ZL_STR-ULICA sy-vline 
WA_PSKRL_ZL_STR-SUPCI sy-vline 
WA_PSKRL_ZL_STR-ORICI sy-vline 
WA_PSKRL_ZL_STR-PSC sy-vline 
WA_PSKRL_ZL_STR-OBEC sy-vline 
WA_PSKRL_ZL_STR-ZIP sy-vline 
WA_PSKRL_ZL_STR-STAT sy-vline 
WA_PSKRL_ZL_STR-ZOSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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