ABAP Select data from SAP table P19ES_COMP_U into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P19ES_COMP_U 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 P19ES_COMP_U. 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 P19ES_COMP_U 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_P19ES_COMP_U TYPE STANDARD TABLE OF P19ES_COMP_U,
      WA_P19ES_COMP_U TYPE P19ES_COMP_U,
      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: <P19ES_COMP_U> TYPE P19ES_COMP_U.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P19ES_COMP_U.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P19ES_COMP_U
  INTO TABLE IT_P19ES_COMP_U.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P19ES_COMP_U
*  INTO TABLE @DATA(IT_P19ES_COMP_U2).
*--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_P19ES_COMP_U INDEX 1 INTO DATA(WA_P19ES_COMP_U2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P19ES_COMP_U ASSIGNING <P19ES_COMP_U>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P19ES_COMP_U>-BUKRS = 1.
<P19ES_COMP_U>-COTXT = 1.
<P19ES_COMP_U>-WERKS = 1.
<P19ES_COMP_U>-BTRTL = 1.
<P19ES_COMP_U>-SATXT = 1.

ENDLOOP.

LOOP AT IT_P19ES_COMP_U INTO WA_P19ES_COMP_U.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P19ES_COMP_U-PSCOD, sy-vline,
  WA_P19ES_COMP_U-PSTXT, sy-vline,
  WA_P19ES_COMP_U-PSDAT, sy-vline,
  WA_P19ES_COMP_U-BTENR, sy-vline,
  WA_P19ES_COMP_U-BTEDT, sy-vline,
  WA_P19ES_COMP_U-EMFSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P19ES_COMP_U 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_P19ES_COMP_U 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_P19ES_COMP_U INTO WA_P19ES_COMP_U.


*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 GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P19ES_COMP_U-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P19ES_COMP_U-PABRJ.
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_P19ES_COMP_U_STR, 
BUKRS TYPE STRING,
COTXT TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
SATXT TYPE STRING,
PSCOD TYPE STRING,
PSTXT TYPE STRING,
PSDAT TYPE STRING,
BTENR TYPE STRING,
BTEDT TYPE STRING,
EMFSL TYPE STRING,
EMFNA TYPE STRING,
PABRJ TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P19ES_COMP_U_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_P19ES_COMP_U_STR-BUKRS sy-vline 
WA_P19ES_COMP_U_STR-COTXT sy-vline 
WA_P19ES_COMP_U_STR-WERKS sy-vline 
WA_P19ES_COMP_U_STR-BTRTL sy-vline 
WA_P19ES_COMP_U_STR-SATXT sy-vline 
WA_P19ES_COMP_U_STR-PSCOD sy-vline 
WA_P19ES_COMP_U_STR-PSTXT sy-vline 
WA_P19ES_COMP_U_STR-PSDAT sy-vline 
WA_P19ES_COMP_U_STR-BTENR sy-vline 
WA_P19ES_COMP_U_STR-BTEDT sy-vline 
WA_P19ES_COMP_U_STR-EMFSL sy-vline 
WA_P19ES_COMP_U_STR-EMFNA sy-vline 
WA_P19ES_COMP_U_STR-PABRJ sy-vline 
WA_P19ES_COMP_U_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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