ABAP Select data from SAP table TRPAR_INT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRPAR_INT
*  INTO TABLE @DATA(IT_TRPAR_INT2).
*--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_TRPAR_INT INDEX 1 INTO DATA(WA_TRPAR_INT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRPAR_INT>-CHECKED = 1.
<TRPAR_INT>-NAMETOLONG = 1.
<TRPAR_INT>-PGMID = 1.
<TRPAR_INT>-OBJECT = 1.
<TRPAR_INT>-OBJ_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRPAR_INT-COMPLETE, sy-vline,
  WA_TRPAR_INT-CATEGORY, sy-vline,
  WA_TRPAR_INT-CLI_DEP, sy-vline,
  WA_TRPAR_INT-TABLE_TYP, sy-vline,
  WA_TRPAR_INT-TAB_CONTFG, sy-vline,
  WA_TRPAR_INT-NO_OBJ_NAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRPAR_INT 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_TRPAR_INT 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_TRPAR_INT INTO WA_TRPAR_INT.


*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_TRPAR_INT_STR, 
CHECKED TYPE STRING,
NAMETOLONG TYPE STRING,
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
COMPLETE TYPE STRING,
CATEGORY TYPE STRING,
CLI_DEP TYPE STRING,
TABLE_TYP TYPE STRING,
TAB_CONTFG TYPE STRING,
NO_OBJ_NAM TYPE STRING,
TXT_SYN_ER TYPE STRING,
LANGTYP TYPE STRING,
LANGTYPA TYPE STRING,
LOGO_OBJ TYPE STRING,
TOO_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRPAR_INT_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_TRPAR_INT_STR-CHECKED sy-vline 
WA_TRPAR_INT_STR-NAMETOLONG sy-vline 
WA_TRPAR_INT_STR-PGMID sy-vline 
WA_TRPAR_INT_STR-OBJECT sy-vline 
WA_TRPAR_INT_STR-OBJ_NAME sy-vline 
WA_TRPAR_INT_STR-COMPLETE sy-vline 
WA_TRPAR_INT_STR-CATEGORY sy-vline 
WA_TRPAR_INT_STR-CLI_DEP sy-vline 
WA_TRPAR_INT_STR-TABLE_TYP sy-vline 
WA_TRPAR_INT_STR-TAB_CONTFG sy-vline 
WA_TRPAR_INT_STR-NO_OBJ_NAM sy-vline 
WA_TRPAR_INT_STR-TXT_SYN_ER sy-vline 
WA_TRPAR_INT_STR-LANGTYP sy-vline 
WA_TRPAR_INT_STR-LANGTYPA sy-vline 
WA_TRPAR_INT_STR-LOGO_OBJ sy-vline 
WA_TRPAR_INT_STR-TOO_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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