ABAP Select data from SAP table WCSPERMIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCSPERMIT
*  INTO TABLE @DATA(IT_WCSPERMIT2).
*--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_WCSPERMIT INDEX 1 INTO DATA(WA_WCSPERMIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCSPERMIT>-BUTTON = 1.
<WCSPERMIT>-PMSOG = 1.
<WCSPERMIT>-GNTYP = 1.
<WCSPERMIT>-GNTXT = 1.
<WCSPERMIT>-HILVL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCSPERMIT-PROCFLG, sy-vline,
  WA_WCSPERMIT-DIRECTION, sy-vline,
  WA_WCSPERMIT-COPYFLG, sy-vline,
  WA_WCSPERMIT-MANDFLG, sy-vline,
  WA_WCSPERMIT-DEACFLG, sy-vline,
  WA_WCSPERMIT-TLFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCSPERMIT 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_WCSPERMIT 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_WCSPERMIT INTO WA_WCSPERMIT.


*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_WCSPERMIT_STR, 
BUTTON TYPE STRING,
PMSOG TYPE STRING,
GNTYP TYPE STRING,
GNTXT TYPE STRING,
HILVL TYPE STRING,
PROCFLG TYPE STRING,
DIRECTION TYPE STRING,
COPYFLG TYPE STRING,
MANDFLG TYPE STRING,
DEACFLG TYPE STRING,
TLFLG TYPE STRING,
STATUS TYPE STRING,
USER_STATUS TYPE STRING,
REJSTGRP TYPE STRING,
ASGNFLG TYPE STRING,
AUTOFLG TYPE STRING,
AGENT TYPE STRING,
KZLTX TYPE STRING,
K_GENEHM TYPE STRING,
GENNAME TYPE STRING,
GENVNAME TYPE STRING,
GENDATUM TYPE STRING,
GENTIME TYPE STRING,
ICON_PROCFLG TYPE STRING,
ICON_K_GENEHM TYPE STRING,
INFO_K_GENEHM TYPE STRING,
ICON_KZLTX TYPE STRING,
COUNTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCSPERMIT_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_WCSPERMIT_STR-BUTTON sy-vline 
WA_WCSPERMIT_STR-PMSOG sy-vline 
WA_WCSPERMIT_STR-GNTYP sy-vline 
WA_WCSPERMIT_STR-GNTXT sy-vline 
WA_WCSPERMIT_STR-HILVL sy-vline 
WA_WCSPERMIT_STR-PROCFLG sy-vline 
WA_WCSPERMIT_STR-DIRECTION sy-vline 
WA_WCSPERMIT_STR-COPYFLG sy-vline 
WA_WCSPERMIT_STR-MANDFLG sy-vline 
WA_WCSPERMIT_STR-DEACFLG sy-vline 
WA_WCSPERMIT_STR-TLFLG sy-vline 
WA_WCSPERMIT_STR-STATUS sy-vline 
WA_WCSPERMIT_STR-USER_STATUS sy-vline 
WA_WCSPERMIT_STR-REJSTGRP sy-vline 
WA_WCSPERMIT_STR-ASGNFLG sy-vline 
WA_WCSPERMIT_STR-AUTOFLG sy-vline 
WA_WCSPERMIT_STR-AGENT sy-vline 
WA_WCSPERMIT_STR-KZLTX sy-vline 
WA_WCSPERMIT_STR-K_GENEHM sy-vline 
WA_WCSPERMIT_STR-GENNAME sy-vline 
WA_WCSPERMIT_STR-GENVNAME sy-vline 
WA_WCSPERMIT_STR-GENDATUM sy-vline 
WA_WCSPERMIT_STR-GENTIME sy-vline 
WA_WCSPERMIT_STR-ICON_PROCFLG sy-vline 
WA_WCSPERMIT_STR-ICON_K_GENEHM sy-vline 
WA_WCSPERMIT_STR-INFO_K_GENEHM sy-vline 
WA_WCSPERMIT_STR-ICON_KZLTX sy-vline 
WA_WCSPERMIT_STR-COUNTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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