ABAP Select data from SAP table P39_EMPLOYER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P39_EMPLOYER 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 P39_EMPLOYER. 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 P39_EMPLOYER 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_P39_EMPLOYER TYPE STANDARD TABLE OF P39_EMPLOYER,
      WA_P39_EMPLOYER TYPE P39_EMPLOYER,
      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: <P39_EMPLOYER> TYPE P39_EMPLOYER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P39_EMPLOYER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P39_EMPLOYER
  INTO TABLE IT_P39_EMPLOYER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P39_EMPLOYER
*  INTO TABLE @DATA(IT_P39_EMPLOYER2).
*--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_P39_EMPLOYER INDEX 1 INTO DATA(WA_P39_EMPLOYER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P39_EMPLOYER ASSIGNING <P39_EMPLOYER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P39_EMPLOYER>-BUKRS = 1.
<P39_EMPLOYER>-BUTXT = 1.
<P39_EMPLOYER>-RUTER = 1.
<P39_EMPLOYER>-CODAE = 1.
<P39_EMPLOYER>-TPCTX = 1.

ENDLOOP.

LOOP AT IT_P39_EMPLOYER INTO WA_P39_EMPLOYER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P39_EMPLOYER-REGIO, sy-vline,
  WA_P39_EMPLOYER-CITY1, sy-vline,
  WA_P39_EMPLOYER-CITY2, sy-vline,
  WA_P39_EMPLOYER-STRAS, sy-vline,
  WA_P39_EMPLOYER-TELNR, sy-vline,
  WA_P39_EMPLOYER-EMAIL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P39_EMPLOYER 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_P39_EMPLOYER 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_P39_EMPLOYER INTO WA_P39_EMPLOYER.


*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_P39_EMPLOYER_STR, 
BUKRS TYPE STRING,
BUTXT TYPE STRING,
RUTER TYPE STRING,
CODAE TYPE STRING,
TPCTX TYPE STRING,
REGIO TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
STRAS TYPE STRING,
TELNR TYPE STRING,
EMAIL TYPE STRING,
NMERL TYPE STRING,
RUTRL TYPE STRING,
EMARL TYPE STRING,
NRTRA TYPE STRING,
ADMUT TYPE STRING,
TELRL TYPE STRING,
FAXNR TYPE STRING,
POBOX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P39_EMPLOYER_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_P39_EMPLOYER_STR-BUKRS sy-vline 
WA_P39_EMPLOYER_STR-BUTXT sy-vline 
WA_P39_EMPLOYER_STR-RUTER sy-vline 
WA_P39_EMPLOYER_STR-CODAE sy-vline 
WA_P39_EMPLOYER_STR-TPCTX sy-vline 
WA_P39_EMPLOYER_STR-REGIO sy-vline 
WA_P39_EMPLOYER_STR-CITY1 sy-vline 
WA_P39_EMPLOYER_STR-CITY2 sy-vline 
WA_P39_EMPLOYER_STR-STRAS sy-vline 
WA_P39_EMPLOYER_STR-TELNR sy-vline 
WA_P39_EMPLOYER_STR-EMAIL sy-vline 
WA_P39_EMPLOYER_STR-NMERL sy-vline 
WA_P39_EMPLOYER_STR-RUTRL sy-vline 
WA_P39_EMPLOYER_STR-EMARL sy-vline 
WA_P39_EMPLOYER_STR-NRTRA sy-vline 
WA_P39_EMPLOYER_STR-ADMUT sy-vline 
WA_P39_EMPLOYER_STR-TELRL sy-vline 
WA_P39_EMPLOYER_STR-FAXNR sy-vline 
WA_P39_EMPLOYER_STR-POBOX sy-vline      INTO ld_text SEPARATED BY SPACE.

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