ABAP Select data from SAP table RPSATP_UNIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPSATP_UNIT
*  INTO TABLE @DATA(IT_RPSATP_UNIT2).
*--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_RPSATP_UNIT INDEX 1 INTO DATA(WA_RPSATP_UNIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPSATP_UNIT>-PSC_GROUP = 1.
<RPSATP_UNIT>-PRODUCING = 1.
<RPSATP_UNIT>-PSC_NAME = 1.
<RPSATP_UNIT>-PSC_BILL_FREQ = 1.
<RPSATP_UNIT>-PER_OLD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPSATP_UNIT-YEAR_OLD, sy-vline,
  WA_RPSATP_UNIT-BILL_PERIOD, sy-vline,
  WA_RPSATP_UNIT-PSC_PRODUCT, sy-vline,
  WA_RPSATP_UNIT-VNAME, sy-vline,
  WA_RPSATP_UNIT-ETYPE, sy-vline,
  WA_RPSATP_UNIT-EQGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPSATP_UNIT 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_RPSATP_UNIT 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_RPSATP_UNIT INTO WA_RPSATP_UNIT.


*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 YEAR_OLD
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-YEAR_OLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-YEAR_OLD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-VNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ETYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-ETYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-ETYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-EQGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-EQGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SSCALE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-SSCALE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-SSCALE_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PROD_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-PROD_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-PROD_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PSC_EG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-PSC_EG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-PSC_EG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPSATP_UNIT-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPSATP_UNIT-RVERS.
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_RPSATP_UNIT_STR, 
PSC_GROUP TYPE STRING,
PRODUCING TYPE STRING,
PSC_NAME TYPE STRING,
PSC_BILL_FREQ TYPE STRING,
PER_OLD TYPE STRING,
YEAR_OLD TYPE STRING,
BILL_PERIOD TYPE STRING,
PSC_PRODUCT TYPE STRING,
VNAME TYPE STRING,
ETYPE TYPE STRING,
EQGRP TYPE STRING,
PSC_CALC_STEP TYPE STRING,
PSC_CALC_TYPE TYPE STRING,
CALC_SCHEME TYPE STRING,
SSCALE_UOM TYPE STRING,
SSCALE_CURR TYPE STRING,
SSCALE_FREQ TYPE STRING,
MULTI_PERIODS TYPE STRING,
PSC_CALC_TP_CG TYPE STRING,
PSC_FUNCTION TYPE STRING,
TABIX TYPE STRING,
PSC_VOLUME TYPE STRING,
EQGRP_PERCENT TYPE STRING,
PROD_UOM TYPE STRING,
PSC_PPU TYPE STRING,
BTU_FACTOR TYPE STRING,
COMBINED_PRODUCT TYPE STRING,
TRANSFER_PRODUCT TYPE STRING,
PSC_EG TYPE STRING,
EQUAL_PRIORITY TYPE STRING,
RVERS TYPE STRING,
RRCTY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPSATP_UNIT_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_RPSATP_UNIT_STR-PSC_GROUP sy-vline 
WA_RPSATP_UNIT_STR-PRODUCING sy-vline 
WA_RPSATP_UNIT_STR-PSC_NAME sy-vline 
WA_RPSATP_UNIT_STR-PSC_BILL_FREQ sy-vline 
WA_RPSATP_UNIT_STR-PER_OLD sy-vline 
WA_RPSATP_UNIT_STR-YEAR_OLD sy-vline 
WA_RPSATP_UNIT_STR-BILL_PERIOD sy-vline 
WA_RPSATP_UNIT_STR-PSC_PRODUCT sy-vline 
WA_RPSATP_UNIT_STR-VNAME sy-vline 
WA_RPSATP_UNIT_STR-ETYPE sy-vline 
WA_RPSATP_UNIT_STR-EQGRP sy-vline 
WA_RPSATP_UNIT_STR-PSC_CALC_STEP sy-vline 
WA_RPSATP_UNIT_STR-PSC_CALC_TYPE sy-vline 
WA_RPSATP_UNIT_STR-CALC_SCHEME sy-vline 
WA_RPSATP_UNIT_STR-SSCALE_UOM sy-vline 
WA_RPSATP_UNIT_STR-SSCALE_CURR sy-vline 
WA_RPSATP_UNIT_STR-SSCALE_FREQ sy-vline 
WA_RPSATP_UNIT_STR-MULTI_PERIODS sy-vline 
WA_RPSATP_UNIT_STR-PSC_CALC_TP_CG sy-vline 
WA_RPSATP_UNIT_STR-PSC_FUNCTION sy-vline 
WA_RPSATP_UNIT_STR-TABIX sy-vline 
WA_RPSATP_UNIT_STR-PSC_VOLUME sy-vline 
WA_RPSATP_UNIT_STR-EQGRP_PERCENT sy-vline 
WA_RPSATP_UNIT_STR-PROD_UOM sy-vline 
WA_RPSATP_UNIT_STR-PSC_PPU sy-vline 
WA_RPSATP_UNIT_STR-BTU_FACTOR sy-vline 
WA_RPSATP_UNIT_STR-COMBINED_PRODUCT sy-vline 
WA_RPSATP_UNIT_STR-TRANSFER_PRODUCT sy-vline 
WA_RPSATP_UNIT_STR-PSC_EG sy-vline 
WA_RPSATP_UNIT_STR-EQUAL_PRIORITY sy-vline 
WA_RPSATP_UNIT_STR-RVERS sy-vline 
WA_RPSATP_UNIT_STR-RRCTY sy-vline      INTO ld_text SEPARATED BY SPACE.

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