ABAP Select data from SAP table /SEHS/DGS_DGRELBUF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SEHS/DGS_DGRELBUF
*  INTO TABLE @DATA(IT_/SEHS/DGS_DGRELBUF2).
*--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_/SEHS/DGS_DGRELBUF INDEX 1 INTO DATA(WA_/SEHS/DGS_DGRELBUF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SEHS/DGS_DGRELBUF>-VALFLG = 1.
</SEHS/DGS_DGRELBUF>-CHCOFLG = 1.
</SEHS/DGS_DGRELBUF>-LOCKMOD = 1.
</SEHS/DGS_DGRELBUF>-LOGLOCKMOD = 1.
</SEHS/DGS_DGRELBUF>-SAVEMOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SEHS/DGS_DGRELBUF-SPLIT, sy-vline,
  WA_/SEHS/DGS_DGRELBUF-BUF_ORIG_INDEX, sy-vline,
  WA_/SEHS/DGS_DGRELBUF-CHANGENO, sy-vline,
  WA_/SEHS/DGS_DGRELBUF-KEYDATE, sy-vline,
  WA_/SEHS/DGS_DGRELBUF-MANDT, sy-vline,
  WA_/SEHS/DGS_DGRELBUF-RECN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SEHS/DGS_DGRELBUF 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_/SEHS/DGS_DGRELBUF 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_/SEHS/DGS_DGRELBUF INTO WA_/SEHS/DGS_DGRELBUF.


*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 ALPHA, internal->external for field CHANGENO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SEHS/DGS_DGRELBUF-CHANGENO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/DGS_DGRELBUF-CHANGENO.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit EHSMA, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_EHSMA_OUTPUT'
  EXPORTING
    input =                      WA_/SEHS/DGS_DGRELBUF-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/DGS_DGRELBUF-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHSMA, internal->external for field PACKAGE_MATNR
CALL FUNCTION 'CONVERSION_EXIT_EHSMA_OUTPUT'
  EXPORTING
    input =                      WA_/SEHS/DGS_DGRELBUF-PACKAGE_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/DGS_DGRELBUF-PACKAGE_MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR_REPLACE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SEHS/DGS_DGRELBUF-MATNR_REPLACE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/DGS_DGRELBUF-MATNR_REPLACE.
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_/SEHS/DGS_DGRELBUF_STR, 
VALFLG TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
LOGLOCKMOD TYPE STRING,
SAVEMOD TYPE STRING,
SPLIT TYPE STRING,
BUF_ORIG_INDEX TYPE STRING,
CHANGENO TYPE STRING,
KEYDATE TYPE STRING,
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
MATNR TYPE STRING,
LWDG TYPE STRING,
PACKAGE_MATNR TYPE STRING,
DAOR TYPE STRING,
PRIO_ALTERN TYPE STRING,
FLG_RELEASED TYPE STRING,
FLG_TRANS_PERM TYPE STRING,
FLG_NO_DG TYPE STRING,
FLG_LQ TYPE STRING,
FLG_RQ TYPE STRING,
INSTR_ENCL TYPE STRING,
FLG_SINGLE_PACK TYPE STRING,
PACOD TYPE STRING,
QUANT_OUT_PACK TYPE STRING,
U_QUANT_OUT_PACK TYPE STRING,
PACK_NOTE TYPE STRING,
RECN_SUB TYPE STRING,
RECN_CLASS TYPE STRING,
FLG_CC TYPE STRING,
FLG_PACKED TYPE STRING,
TRANSPORT_TYPE TYPE STRING,
APPROVAL_CODE TYPE STRING,
MAT_DAMAGED_CL7 TYPE STRING,
MAX_GROSS_WEIGHT TYPE STRING,
U_MAX_GROSS_WGHT TYPE STRING,
SUBID_DG_CLASS TYPE STRING,
EMV_DYN TYPE STRING,
LTSK_DYN TYPE STRING,
EXPL_NET_DYN TYPE STRING,
EXPL_NET_DYN_U TYPE STRING,
MAX_ACT_SGL TYPE STRING,
MAX_ACT_SGL_U TYPE STRING,
ACT_SGL_UNLIMIT TYPE STRING,
MAX_ACT_PACK TYPE STRING,
MAX_ACT_PACK_U TYPE STRING,
ACT_PACK_UNLIMIT TYPE STRING,
EXCEPT_PACK_OPT TYPE STRING,
DG_USE_CASE TYPE STRING,
PRIO_DYNCL TYPE STRING,
MAX_NEM TYPE STRING,
MAX_NEM_U TYPE STRING,
DUMMY_RCBDUDGREL TYPE STRING,
FLG_EQ TYPE STRING,
DGREL_TRANSIND01 TYPE STRING,
DGREL_TRANSIND02 TYPE STRING,
DGREL_TRANSIND03 TYPE STRING,
DGREL_TRANSIND04 TYPE STRING,
DGREL_TRANSIND05 TYPE STRING,
DGREL_TRANSIND06 TYPE STRING,
DGREL_TRANSIND07 TYPE STRING,
DGREL_TRANSIND08 TYPE STRING,
MATNR_REPLACE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SEHS/DGS_DGRELBUF_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_/SEHS/DGS_DGRELBUF_STR-VALFLG sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-CHCOFLG sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-LOCKMOD sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-LOGLOCKMOD sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-SAVEMOD sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-SPLIT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-BUF_ORIG_INDEX sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-CHANGENO sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-KEYDATE sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MANDT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-RECN sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-ACTN sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-VALFR sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-VALTO sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-AENNR sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DELFLG sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-PARKFLG sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-CRDAT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-CRNAM sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-UPDDAT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-UPDNAM sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-SRSID sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-OWNID sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-RECNROOT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MATNR sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-LWDG sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-PACKAGE_MATNR sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DAOR sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-PRIO_ALTERN sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_RELEASED sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_TRANS_PERM sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_NO_DG sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_LQ sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_RQ sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-INSTR_ENCL sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_SINGLE_PACK sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-PACOD sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-QUANT_OUT_PACK sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-U_QUANT_OUT_PACK sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-PACK_NOTE sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-RECN_SUB sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-RECN_CLASS sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_CC sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_PACKED sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-TRANSPORT_TYPE sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-APPROVAL_CODE sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAT_DAMAGED_CL7 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAX_GROSS_WEIGHT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-U_MAX_GROSS_WGHT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-SUBID_DG_CLASS sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-EMV_DYN sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-LTSK_DYN sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-EXPL_NET_DYN sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-EXPL_NET_DYN_U sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAX_ACT_SGL sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAX_ACT_SGL_U sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-ACT_SGL_UNLIMIT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAX_ACT_PACK sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAX_ACT_PACK_U sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-ACT_PACK_UNLIMIT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-EXCEPT_PACK_OPT sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DG_USE_CASE sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-PRIO_DYNCL sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAX_NEM sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MAX_NEM_U sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DUMMY_RCBDUDGREL sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-FLG_EQ sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND01 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND02 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND03 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND04 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND05 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND06 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND07 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-DGREL_TRANSIND08 sy-vline 
WA_/SEHS/DGS_DGRELBUF_STR-MATNR_REPLACE sy-vline      INTO ld_text SEPARATED BY SPACE.

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