ABAP Select data from SAP table /SCWM/S_REMREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_REMREQ
*  INTO TABLE @DATA(IT_/SCWM/S_REMREQ2).
*--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_/SCWM/S_REMREQ INDEX 1 INTO DATA(WA_/SCWM/S_REMREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_REMREQ>-SEQNO = 1.
</SCWM/S_REMREQ>-LGNUM = 1.
</SCWM/S_REMREQ>-VLTYPG = 1.
</SCWM/S_REMREQ>-VLTYP = 1.
</SCWM/S_REMREQ>-VLBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_REMREQ-VLPLA, sy-vline,
  WA_/SCWM/S_REMREQ-VPTYP, sy-vline,
  WA_/SCWM/S_REMREQ-VLENR, sy-vline,
  WA_/SCWM/S_REMREQ-SGUID_HU, sy-vline,
  WA_/SCWM/S_REMREQ-SRSRC, sy-vline,
  WA_/SCWM/S_REMREQ-STU_NUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_REMREQ 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_/SCWM/S_REMREQ 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_/SCWM/S_REMREQ INTO WA_/SCWM/S_REMREQ.


*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 HUID, internal->external for field VLENR
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_REMREQ-VLENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_REMREQ-VLENR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit BPMAP, internal->external for field OWNER
CALL FUNCTION 'CONVERSION_EXIT_BPMAP_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_REMREQ-OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_REMREQ-OWNER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit HUID, internal->external for field SHU_A
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_REMREQ-SHU_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_REMREQ-SHU_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CWUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_REMREQ-CWUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_REMREQ-CWUNIT.
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_/SCWM/S_REMREQ_STR, 
SEQNO TYPE STRING,
LGNUM TYPE STRING,
VLTYPG TYPE STRING,
VLTYP TYPE STRING,
VLBER TYPE STRING,
VLPLA TYPE STRING,
VPTYP TYPE STRING,
VLENR TYPE STRING,
SGUID_HU TYPE STRING,
SRSRC TYPE STRING,
STU_NUM TYPE STRING,
PROCTY TYPE STRING,
QUAN TYPE STRING,
UNIT TYPE STRING,
MATID TYPE STRING,
BATCHID TYPE STRING,
CAT TYPE STRING,
STOCK_DOCCAT TYPE STRING,
STOCK_DOCNO TYPE STRING,
STOCK_ITMNO TYPE STRING,
DOCCAT TYPE STRING,
STOCK_USAGE TYPE STRING,
OWNER TYPE STRING,
OWNER_ROLE TYPE STRING,
ENTITLED TYPE STRING,
ENTITLED_ROLE TYPE STRING,
STOCK_CNT TYPE STRING,
INSPTYP TYPE STRING,
INSPID TYPE STRING,
IDPLATE TYPE STRING,
QDOCCAT TYPE STRING,
QDOCID TYPE STRING,
QITMID TYPE STRING,
SQUANT_SET TYPE STRING,
GUID_STOCK TYPE STRING,
GUID_STOCK0 TYPE STRING,
RDOCCAT TYPE STRING,
RDOCID TYPE STRING,
RITMID TYPE STRING,
SHU_A TYPE STRING,
SGUID_PARENT TYPE STRING,
T_SERID TYPE STRING,
CWQUAN TYPE STRING,
CWUNIT TYPE STRING,
BSELCRIT TYPE STRING,
CLASSTYPE TYPE STRING,
CLASS TYPE STRING,
STATUS TYPE STRING,
T_SELCRIT_NUM TYPE STRING,
T_SELCRIT_CHAR TYPE STRING,
T_SELCRIT_CURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_REMREQ_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_/SCWM/S_REMREQ_STR-SEQNO sy-vline 
WA_/SCWM/S_REMREQ_STR-LGNUM sy-vline 
WA_/SCWM/S_REMREQ_STR-VLTYPG sy-vline 
WA_/SCWM/S_REMREQ_STR-VLTYP sy-vline 
WA_/SCWM/S_REMREQ_STR-VLBER sy-vline 
WA_/SCWM/S_REMREQ_STR-VLPLA sy-vline 
WA_/SCWM/S_REMREQ_STR-VPTYP sy-vline 
WA_/SCWM/S_REMREQ_STR-VLENR sy-vline 
WA_/SCWM/S_REMREQ_STR-SGUID_HU sy-vline 
WA_/SCWM/S_REMREQ_STR-SRSRC sy-vline 
WA_/SCWM/S_REMREQ_STR-STU_NUM sy-vline 
WA_/SCWM/S_REMREQ_STR-PROCTY sy-vline 
WA_/SCWM/S_REMREQ_STR-QUAN sy-vline 
WA_/SCWM/S_REMREQ_STR-UNIT sy-vline 
WA_/SCWM/S_REMREQ_STR-MATID sy-vline 
WA_/SCWM/S_REMREQ_STR-BATCHID sy-vline 
WA_/SCWM/S_REMREQ_STR-CAT sy-vline 
WA_/SCWM/S_REMREQ_STR-STOCK_DOCCAT sy-vline 
WA_/SCWM/S_REMREQ_STR-STOCK_DOCNO sy-vline 
WA_/SCWM/S_REMREQ_STR-STOCK_ITMNO sy-vline 
WA_/SCWM/S_REMREQ_STR-DOCCAT sy-vline 
WA_/SCWM/S_REMREQ_STR-STOCK_USAGE sy-vline 
WA_/SCWM/S_REMREQ_STR-OWNER sy-vline 
WA_/SCWM/S_REMREQ_STR-OWNER_ROLE sy-vline 
WA_/SCWM/S_REMREQ_STR-ENTITLED sy-vline 
WA_/SCWM/S_REMREQ_STR-ENTITLED_ROLE sy-vline 
WA_/SCWM/S_REMREQ_STR-STOCK_CNT sy-vline 
WA_/SCWM/S_REMREQ_STR-INSPTYP sy-vline 
WA_/SCWM/S_REMREQ_STR-INSPID sy-vline 
WA_/SCWM/S_REMREQ_STR-IDPLATE sy-vline 
WA_/SCWM/S_REMREQ_STR-QDOCCAT sy-vline 
WA_/SCWM/S_REMREQ_STR-QDOCID sy-vline 
WA_/SCWM/S_REMREQ_STR-QITMID sy-vline 
WA_/SCWM/S_REMREQ_STR-SQUANT_SET sy-vline 
WA_/SCWM/S_REMREQ_STR-GUID_STOCK sy-vline 
WA_/SCWM/S_REMREQ_STR-GUID_STOCK0 sy-vline 
WA_/SCWM/S_REMREQ_STR-RDOCCAT sy-vline 
WA_/SCWM/S_REMREQ_STR-RDOCID sy-vline 
WA_/SCWM/S_REMREQ_STR-RITMID sy-vline 
WA_/SCWM/S_REMREQ_STR-SHU_A sy-vline 
WA_/SCWM/S_REMREQ_STR-SGUID_PARENT sy-vline 
WA_/SCWM/S_REMREQ_STR-T_SERID sy-vline 
WA_/SCWM/S_REMREQ_STR-CWQUAN sy-vline 
WA_/SCWM/S_REMREQ_STR-CWUNIT sy-vline 
WA_/SCWM/S_REMREQ_STR-BSELCRIT sy-vline 
WA_/SCWM/S_REMREQ_STR-CLASSTYPE sy-vline 
WA_/SCWM/S_REMREQ_STR-CLASS sy-vline 
WA_/SCWM/S_REMREQ_STR-STATUS sy-vline 
WA_/SCWM/S_REMREQ_STR-T_SELCRIT_NUM sy-vline 
WA_/SCWM/S_REMREQ_STR-T_SELCRIT_CHAR sy-vline 
WA_/SCWM/S_REMREQ_STR-T_SELCRIT_CURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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