ABAP Select data from SAP table RJPMAT01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJPMAT01 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 RJPMAT01. 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 RJPMAT01 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_RJPMAT01 TYPE STANDARD TABLE OF RJPMAT01,
      WA_RJPMAT01 TYPE RJPMAT01,
      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: <RJPMAT01> TYPE RJPMAT01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJPMAT01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJPMAT01
  INTO TABLE IT_RJPMAT01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJPMAT01
*  INTO TABLE @DATA(IT_RJPMAT012).
*--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_RJPMAT01 INDEX 1 INTO DATA(WA_RJPMAT012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJPMAT01 ASSIGNING <RJPMAT01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJPMAT01>-ISMHEIGHT = 1.
<RJPMAT01>-ISMHEIGHTUNIT = 1.
<RJPMAT01>-ISMWIDTH = 1.
<RJPMAT01>-ISMWIDTHUNIT = 1.
<RJPMAT01>-ISMTHICKNESS = 1.

ENDLOOP.

LOOP AT IT_RJPMAT01 INTO WA_RJPMAT01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJPMAT01-ISMTHICKNUNIT, sy-vline,
  WA_RJPMAT01-ISMSIZEUNIT, sy-vline,
  WA_RJPMAT01-ISMPUBLPERTYPEEX, sy-vline,
  WA_RJPMAT01-ISMFRSTPBPERTYPEEX, sy-vline,
  WA_RJPMAT01-ISMVOLEH, sy-vline,
  WA_RJPMAT01-ISMGEWEIH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJPMAT01 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_RJPMAT01 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_RJPMAT01 INTO WA_RJPMAT01.


*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 CUNIT, internal->external for field ISMHEIGHTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMHEIGHTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMHEIGHTUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ISMWIDTHUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMWIDTHUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMWIDTHUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ISMTHICKNUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMTHICKNUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMTHICKNUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ISMSIZEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMSIZEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMSIZEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ISMVOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMVOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMVOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ISMGEWEIH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMGEWEIH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMGEWEIH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ISMPAPWTHUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMPAPWTHUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMPAPWTHUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ISMSHEETTHUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMSHEETTHUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMSHEETTHUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit JPICT, internal->external for field ISMIDCODETYPE
CALL FUNCTION 'CONVERSION_EXIT_JPICT_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMIDCODETYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMIDCODETYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ISMREFMDPRFAM
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RJPMAT01-ISMREFMDPRFAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPMAT01-ISMREFMDPRFAM.
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_RJPMAT01_STR, 
ISMHEIGHT TYPE STRING,
ISMHEIGHTUNIT TYPE STRING,
ISMWIDTH TYPE STRING,
ISMWIDTHUNIT TYPE STRING,
ISMTHICKNESS TYPE STRING,
ISMTHICKNUNIT TYPE STRING,
ISMSIZEUNIT TYPE STRING,
ISMPUBLPERTYPEEX TYPE STRING,
ISMFRSTPBPERTYPEEX TYPE STRING,
ISMVOLEH TYPE STRING,
ISMGEWEIH TYPE STRING,
ISMPAPWTHUNIT TYPE STRING,
ISMSHEETTHUNIT TYPE STRING,
ISMXBUPAASS TYPE STRING,
ISMIDENTCODE TYPE STRING,
ISMIDCODETYPE TYPE STRING,
ISMXIDCDASS TYPE STRING,
ISMREFMDPRFAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJPMAT01_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_RJPMAT01_STR-ISMHEIGHT sy-vline 
WA_RJPMAT01_STR-ISMHEIGHTUNIT sy-vline 
WA_RJPMAT01_STR-ISMWIDTH sy-vline 
WA_RJPMAT01_STR-ISMWIDTHUNIT sy-vline 
WA_RJPMAT01_STR-ISMTHICKNESS sy-vline 
WA_RJPMAT01_STR-ISMTHICKNUNIT sy-vline 
WA_RJPMAT01_STR-ISMSIZEUNIT sy-vline 
WA_RJPMAT01_STR-ISMPUBLPERTYPEEX sy-vline 
WA_RJPMAT01_STR-ISMFRSTPBPERTYPEEX sy-vline 
WA_RJPMAT01_STR-ISMVOLEH sy-vline 
WA_RJPMAT01_STR-ISMGEWEIH sy-vline 
WA_RJPMAT01_STR-ISMPAPWTHUNIT sy-vline 
WA_RJPMAT01_STR-ISMSHEETTHUNIT sy-vline 
WA_RJPMAT01_STR-ISMXBUPAASS sy-vline 
WA_RJPMAT01_STR-ISMIDENTCODE sy-vline 
WA_RJPMAT01_STR-ISMIDCODETYPE sy-vline 
WA_RJPMAT01_STR-ISMXIDCDASS sy-vline 
WA_RJPMAT01_STR-ISMREFMDPRFAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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