ABAP Select data from SAP table /SCDL/V_REQH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCDL/V_REQH
*  INTO TABLE @DATA(IT_/SCDL/V_REQH2).
*--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_/SCDL/V_REQH INDEX 1 INTO DATA(WA_/SCDL/V_REQH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCDL/V_REQH>-MANDT = 1.
</SCDL/V_REQH>-DOCID = 1.
</SCDL/V_REQH>-DOCCAT = 1.
</SCDL/V_REQH>-DOCTYPE = 1.
</SCDL/V_REQH>-CRETST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCDL/V_REQH-CREUSR, sy-vline,
  WA_/SCDL/V_REQH-CHGTST, sy-vline,
  WA_/SCDL/V_REQH-CHGUSR, sy-vline,
  WA_/SCDL/V_REQH-CHGVERSION, sy-vline,
  WA_/SCDL/V_REQH-MANUAL, sy-vline,
  WA_/SCDL/V_REQH-ACTION_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCDL/V_REQH 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_/SCDL/V_REQH 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_/SCDL/V_REQH INTO WA_/SCDL/V_REQH.


*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 TSTPS, internal->external for field CRETST
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCDL/V_REQH-CRETST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCDL/V_REQH-CRETST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHGTST
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCDL/V_REQH-CHGTST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCDL/V_REQH-CHGTST.
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_/SCDL/V_REQH_STR, 
MANDT TYPE STRING,
DOCID TYPE STRING,
DOCCAT TYPE STRING,
DOCTYPE TYPE STRING,
CRETST TYPE STRING,
CREUSR TYPE STRING,
CHGTST TYPE STRING,
CHGUSR TYPE STRING,
CHGVERSION TYPE STRING,
MANUAL TYPE STRING,
ACTION_CODE TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
TEXTIND TYPE STRING,
SAP TYPE STRING,
/SCWM/UNIT_SYST TYPE STRING,
/SCWM/CORRIND TYPE STRING,
/SCWM/PRODIND TYPE STRING,
/SCWM/COMMIND TYPE STRING,
/SCWM/LOG_PROCESS TYPE STRING,
/SCWM/TMIND TYPE STRING,
TW_STOP_ID TYPE STRING,
/SCWM/CUST_IND TYPE STRING,
/SCWM/NO_REFIND TYPE STRING,
/SCWM/SCRAPPIND TYPE STRING,
/SCWM/PICKUPIND TYPE STRING,
/SCWM/INV_GIIND TYPE STRING,
VKORG TYPE STRING,
/SCWM/LGLC_IND TYPE STRING,
/SCDL/DR_HEAD TYPE STRING,
/STTPEC/DOC_YEAR TYPE STRING,
/STTPEC/DOC_GLN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCDL/V_REQH_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_/SCDL/V_REQH_STR-MANDT sy-vline 
WA_/SCDL/V_REQH_STR-DOCID sy-vline 
WA_/SCDL/V_REQH_STR-DOCCAT sy-vline 
WA_/SCDL/V_REQH_STR-DOCTYPE sy-vline 
WA_/SCDL/V_REQH_STR-CRETST sy-vline 
WA_/SCDL/V_REQH_STR-CREUSR sy-vline 
WA_/SCDL/V_REQH_STR-CHGTST sy-vline 
WA_/SCDL/V_REQH_STR-CHGUSR sy-vline 
WA_/SCDL/V_REQH_STR-CHGVERSION sy-vline 
WA_/SCDL/V_REQH_STR-MANUAL sy-vline 
WA_/SCDL/V_REQH_STR-ACTION_CODE sy-vline 
WA_/SCDL/V_REQH_STR-INCO1 sy-vline 
WA_/SCDL/V_REQH_STR-INCO2 sy-vline 
WA_/SCDL/V_REQH_STR-TEXTIND sy-vline 
WA_/SCDL/V_REQH_STR-SAP sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/UNIT_SYST sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/CORRIND sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/PRODIND sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/COMMIND sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/LOG_PROCESS sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/TMIND sy-vline 
WA_/SCDL/V_REQH_STR-TW_STOP_ID sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/CUST_IND sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/NO_REFIND sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/SCRAPPIND sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/PICKUPIND sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/INV_GIIND sy-vline 
WA_/SCDL/V_REQH_STR-VKORG sy-vline 
WA_/SCDL/V_REQH_STR-/SCWM/LGLC_IND sy-vline 
WA_/SCDL/V_REQH_STR-/SCDL/DR_HEAD sy-vline 
WA_/SCDL/V_REQH_STR-/STTPEC/DOC_YEAR sy-vline 
WA_/SCDL/V_REQH_STR-/STTPEC/DOC_GLN sy-vline      INTO ld_text SEPARATED BY SPACE.

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