ABAP Select data from SAP table ECSCR_TPAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECSCR_TPAR
*  INTO TABLE @DATA(IT_ECSCR_TPAR2).
*--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_ECSCR_TPAR INDEX 1 INTO DATA(WA_ECSCR_TPAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECSCR_TPAR>-NAME = 1.
<ECSCR_TPAR>-VERSION = 1.
<ECSCR_TPAR>-ABLNR = 1.
<ECSCR_TPAR>-COMMID = 1.
<ECSCR_TPAR>-SUBID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECSCR_TPAR-CALLNO, sy-vline,
  WA_ECSCR_TPAR-PARAMNO, sy-vline,
  WA_ECSCR_TPAR-VERBID, sy-vline,
  WA_ECSCR_TPAR-OLETYP, sy-vline,
  WA_ECSCR_TPAR-PARNAM, sy-vline,
  WA_ECSCR_TPAR-VARINDEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECSCR_TPAR 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_ECSCR_TPAR 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_ECSCR_TPAR INTO WA_ECSCR_TPAR.


*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_ECSCR_TPAR_STR, 
NAME TYPE STRING,
VERSION TYPE STRING,
ABLNR TYPE STRING,
COMMID TYPE STRING,
SUBID TYPE STRING,
CALLNO TYPE STRING,
PARAMNO TYPE STRING,
VERBID TYPE STRING,
OLETYP TYPE STRING,
PARNAM TYPE STRING,
VARINDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECSCR_TPAR_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_ECSCR_TPAR_STR-NAME sy-vline 
WA_ECSCR_TPAR_STR-VERSION sy-vline 
WA_ECSCR_TPAR_STR-ABLNR sy-vline 
WA_ECSCR_TPAR_STR-COMMID sy-vline 
WA_ECSCR_TPAR_STR-SUBID sy-vline 
WA_ECSCR_TPAR_STR-CALLNO sy-vline 
WA_ECSCR_TPAR_STR-PARAMNO sy-vline 
WA_ECSCR_TPAR_STR-VERBID sy-vline 
WA_ECSCR_TPAR_STR-OLETYP sy-vline 
WA_ECSCR_TPAR_STR-PARNAM sy-vline 
WA_ECSCR_TPAR_STR-VARINDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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