ABAP Select data from SAP table /SCMB/S_RG_REQ_PROD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCMB/S_RG_REQ_PROD 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 /SCMB/S_RG_REQ_PROD. 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 /SCMB/S_RG_REQ_PROD 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_/SCMB/S_RG_REQ_PROD TYPE STANDARD TABLE OF /SCMB/S_RG_REQ_PROD,
      WA_/SCMB/S_RG_REQ_PROD TYPE /SCMB/S_RG_REQ_PROD,
      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: </SCMB/S_RG_REQ_PROD> TYPE /SCMB/S_RG_REQ_PROD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCMB/S_RG_REQ_PROD
  INTO TABLE IT_/SCMB/S_RG_REQ_PROD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMB/S_RG_REQ_PROD
*  INTO TABLE @DATA(IT_/SCMB/S_RG_REQ_PROD2).
*--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_/SCMB/S_RG_REQ_PROD INDEX 1 INTO DATA(WA_/SCMB/S_RG_REQ_PROD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCMB/S_RG_REQ_PROD ASSIGNING </SCMB/S_RG_REQ_PROD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMB/S_RG_REQ_PROD>-REQUEST_ID = 1.
</SCMB/S_RG_REQ_PROD>-MATID = 1.
</SCMB/S_RG_REQ_PROD>-MATNR = 1.
</SCMB/S_RG_REQ_PROD>-TRAGR = 1.
</SCMB/S_RG_REQ_PROD>-WEIGHT = 1.

ENDLOOP.

LOOP AT IT_/SCMB/S_RG_REQ_PROD INTO WA_/SCMB/S_RG_REQ_PROD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMB/S_RG_REQ_PROD-WEIGHT_UOM, sy-vline,
  WA_/SCMB/S_RG_REQ_PROD-VOLUM, sy-vline,
  WA_/SCMB/S_RG_REQ_PROD-VOLUM_UOM, sy-vline,
  WA_/SCMB/S_RG_REQ_PROD-LENGTH, sy-vline,
  WA_/SCMB/S_RG_REQ_PROD-WIDTH, sy-vline,
  WA_/SCMB/S_RG_REQ_PROD-HIGH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMB/S_RG_REQ_PROD 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_/SCMB/S_RG_REQ_PROD 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_/SCMB/S_RG_REQ_PROD INTO WA_/SCMB/S_RG_REQ_PROD.


*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 MDLPD, internal->external for field MATID
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCMB/S_RG_REQ_PROD-MATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMB/S_RG_REQ_PROD-MATID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SCMB/S_RG_REQ_PROD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMB/S_RG_REQ_PROD-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field TOTVOLUME_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCMB/S_RG_REQ_PROD-TOTVOLUME_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMB/S_RG_REQ_PROD-TOTVOLUME_UOM.
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_/SCMB/S_RG_REQ_PROD_STR, 
REQUEST_ID TYPE STRING,
MATID TYPE STRING,
MATNR TYPE STRING,
TRAGR TYPE STRING,
WEIGHT TYPE STRING,
WEIGHT_UOM TYPE STRING,
VOLUM TYPE STRING,
VOLUM_UOM TYPE STRING,
LENGTH TYPE STRING,
WIDTH TYPE STRING,
HIGH TYPE STRING,
LWH_UOM TYPE STRING,
MFRGR TYPE STRING,
DGPROFL TYPE STRING,
QUANT TYPE STRING,
QUANT_UOM TYPE STRING,
TOTWEIGHT TYPE STRING,
TOTWEIGHT_UOM TYPE STRING,
TOTVOLUME TYPE STRING,
TOTVOLUME_UOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMB/S_RG_REQ_PROD_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_/SCMB/S_RG_REQ_PROD_STR-REQUEST_ID sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-MATID sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-MATNR sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-TRAGR sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-WEIGHT sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-WEIGHT_UOM sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-VOLUM sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-VOLUM_UOM sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-LENGTH sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-WIDTH sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-HIGH sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-LWH_UOM sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-MFRGR sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-DGPROFL sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-QUANT sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-QUANT_UOM sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-TOTWEIGHT sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-TOTWEIGHT_UOM sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-TOTVOLUME sy-vline 
WA_/SCMB/S_RG_REQ_PROD_STR-TOTVOLUME_UOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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