ABAP Select data from SAP table PCZ_DLW_EMPLOYEE_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCZ_DLW_EMPLOYEE_S
*  INTO TABLE @DATA(IT_PCZ_DLW_EMPLOYEE_S2).
*--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_PCZ_DLW_EMPLOYEE_S INDEX 1 INTO DATA(WA_PCZ_DLW_EMPLOYEE_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCZ_DLW_EMPLOYEE_S>-PERNR = 1.
<PCZ_DLW_EMPLOYEE_S>-DATE_DED = 1.
<PCZ_DLW_EMPLOYEE_S>-VORNA = 1.
<PCZ_DLW_EMPLOYEE_S>-NACHN = 1.
<PCZ_DLW_EMPLOYEE_S>-TITEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCZ_DLW_EMPLOYEE_S-EMPLOYEE, sy-vline,
  WA_PCZ_DLW_EMPLOYEE_S-PERID, sy-vline,
  WA_PCZ_DLW_EMPLOYEE_S-GBDAT, sy-vline,
  WA_PCZ_DLW_EMPLOYEE_S-ADDRESS, sy-vline,
  WA_PCZ_DLW_EMPLOYEE_S-EMPLOYED, sy-vline,
  WA_PCZ_DLW_EMPLOYEE_S-CTTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCZ_DLW_EMPLOYEE_S 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_PCZ_DLW_EMPLOYEE_S 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_PCZ_DLW_EMPLOYEE_S INTO WA_PCZ_DLW_EMPLOYEE_S.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_PCZ_DLW_EMPLOYEE_S-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCZ_DLW_EMPLOYEE_S-GBDAT.
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_PCZ_DLW_EMPLOYEE_S_STR, 
PERNR TYPE STRING,
DATE_DED TYPE STRING,
VORNA TYPE STRING,
NACHN TYPE STRING,
TITEL TYPE STRING,
EMPLOYEE TYPE STRING,
PERID TYPE STRING,
GBDAT TYPE STRING,
ADDRESS TYPE STRING,
EMPLOYED TYPE STRING,
CTTXT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SLTXT TYPE STRING,
QUALIF TYPE STRING,
WRKD_TIME TYPE STRING,
CNTR_TIME TYPE STRING,
GARNI TYPE STRING,
SEVPY TYPE STRING,
SEV_PAID TYPE STRING,
SEV_IMAP TYPE STRING,
SEV_AMAP TYPE STRING,
BCS_AMAP TYPE STRING,
SEV_IMAP_W_O_DPP TYPE STRING,
SEV_AMAP_W_O_DPP TYPE STRING,
BCS_AMAP_W_O_DPP TYPE STRING,
WAERS TYPE STRING,
GAR_W_O_DPP TYPE STRING,
OTHER_NOTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCZ_DLW_EMPLOYEE_S_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_PCZ_DLW_EMPLOYEE_S_STR-PERNR sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-DATE_DED sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-VORNA sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-NACHN sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-TITEL sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-EMPLOYEE sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-PERID sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-GBDAT sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-ADDRESS sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-EMPLOYED sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-CTTXT sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-BEGDA sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-ENDDA sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-SLTXT sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-QUALIF sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-WRKD_TIME sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-CNTR_TIME sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-GARNI sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-SEVPY sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-SEV_PAID sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-SEV_IMAP sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-SEV_AMAP sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-BCS_AMAP sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-SEV_IMAP_W_O_DPP sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-SEV_AMAP_W_O_DPP sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-BCS_AMAP_W_O_DPP sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-WAERS sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-GAR_W_O_DPP sy-vline 
WA_PCZ_DLW_EMPLOYEE_S_STR-OTHER_NOTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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