ABAP Select data from SAP table RJP_EPD_PARAM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJP_EPD_PARAM
*  INTO TABLE @DATA(IT_RJP_EPD_PARAM2).
*--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_RJP_EPD_PARAM INDEX 1 INTO DATA(WA_RJP_EPD_PARAM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJP_EPD_PARAM>-PARAM1 = 1.
<RJP_EPD_PARAM>-PARAM2 = 1.
<RJP_EPD_PARAM>-PARAM3 = 1.
<RJP_EPD_PARAM>-PARAM4 = 1.
<RJP_EPD_PARAM>-PARAM5 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJP_EPD_PARAM-PARAM6, sy-vline,
  WA_RJP_EPD_PARAM-PARAM7, sy-vline,
  WA_RJP_EPD_PARAM-PARAM8, sy-vline,
  WA_RJP_EPD_PARAM-PARAM9, sy-vline,
  WA_RJP_EPD_PARAM-PARAM10, sy-vline,
  WA_RJP_EPD_PARAM-PARAM11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJP_EPD_PARAM 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_RJP_EPD_PARAM 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_RJP_EPD_PARAM INTO WA_RJP_EPD_PARAM.


*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_RJP_EPD_PARAM_STR, 
PARAM1 TYPE STRING,
PARAM2 TYPE STRING,
PARAM3 TYPE STRING,
PARAM4 TYPE STRING,
PARAM5 TYPE STRING,
PARAM6 TYPE STRING,
PARAM7 TYPE STRING,
PARAM8 TYPE STRING,
PARAM9 TYPE STRING,
PARAM10 TYPE STRING,
PARAM11 TYPE STRING,
PARAM12 TYPE STRING,
PARAM13 TYPE STRING,
PARAM14 TYPE STRING,
PARAM15 TYPE STRING,
PARAM16 TYPE STRING,
PARAM17 TYPE STRING,
PARAM18 TYPE STRING,
PARAM19 TYPE STRING,
PARAM20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJP_EPD_PARAM_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_RJP_EPD_PARAM_STR-PARAM1 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM2 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM3 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM4 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM5 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM6 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM7 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM8 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM9 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM10 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM11 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM12 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM13 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM14 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM15 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM16 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM17 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM18 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM19 sy-vline 
WA_RJP_EPD_PARAM_STR-PARAM20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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