ABAP Select data from SAP table WSGM_SHDOC_CRE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSGM_SHDOC_CRE
*  INTO TABLE @DATA(IT_WSGM_SHDOC_CRE2).
*--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_WSGM_SHDOC_CRE INDEX 1 INTO DATA(WA_WSGM_SHDOC_CRE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSGM_SHDOC_CRE>-VNDR_ID = 1.
<WSGM_SHDOC_CRE>-VNDR_TYPE = 1.
<WSGM_SHDOC_CRE>-MAT_KEY = 1.
<WSGM_SHDOC_CRE>-MATERIAL_IN = 1.
<WSGM_SHDOC_CRE>-MATID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSGM_SHDOC_CRE-DELIVERY_NOTE, sy-vline,
  WA_WSGM_SHDOC_CRE-PLANT, sy-vline,
  WA_WSGM_SHDOC_CRE-PSTNG_DATE, sy-vline,
  WA_WSGM_SHDOC_CRE-PSTNG_DATE_C, sy-vline,
  WA_WSGM_SHDOC_CRE-STATUS_INV, sy-vline,
  WA_WSGM_SHDOC_CRE-MAT_DOC_IN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSGM_SHDOC_CRE 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_WSGM_SHDOC_CRE 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_WSGM_SHDOC_CRE INTO WA_WSGM_SHDOC_CRE.


*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 MATN1, internal->external for field MATERIAL_IN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSGM_SHDOC_CRE-MATERIAL_IN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSGM_SHDOC_CRE-MATERIAL_IN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field DOC_YEAR_IN
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WSGM_SHDOC_CRE-DOC_YEAR_IN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSGM_SHDOC_CRE-DOC_YEAR_IN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSGM_SHDOC_CRE-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSGM_SHDOC_CRE-MATERIAL.
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_WSGM_SHDOC_CRE_STR, 
VNDR_ID TYPE STRING,
VNDR_TYPE TYPE STRING,
MAT_KEY TYPE STRING,
MATERIAL_IN TYPE STRING,
MATID TYPE STRING,
DELIVERY_NOTE TYPE STRING,
PLANT TYPE STRING,
PSTNG_DATE TYPE STRING,
PSTNG_DATE_C TYPE STRING,
STATUS_INV TYPE STRING,
MAT_DOC_IN TYPE STRING,
DOC_YEAR_IN TYPE STRING,
MOVE_TYPE TYPE STRING,
X_AUTO_CRE TYPE STRING,
REF_DOC_NO_VIA_EKBE TYPE STRING,
DISPLAY_POS_DOC TYPE STRING,
T_TR_EV_TYPE_RA TYPE STRING,
VENDOR_NO TYPE STRING,
SUPPL_PLNT TYPE STRING,
MATERIAL TYPE STRING,
CURRENT_STORE TYPE STRING,
SRC_LINES_MAX TYPE STRING,
T_GM_DOC_TYPE_RA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSGM_SHDOC_CRE_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_WSGM_SHDOC_CRE_STR-VNDR_ID sy-vline 
WA_WSGM_SHDOC_CRE_STR-VNDR_TYPE sy-vline 
WA_WSGM_SHDOC_CRE_STR-MAT_KEY sy-vline 
WA_WSGM_SHDOC_CRE_STR-MATERIAL_IN sy-vline 
WA_WSGM_SHDOC_CRE_STR-MATID sy-vline 
WA_WSGM_SHDOC_CRE_STR-DELIVERY_NOTE sy-vline 
WA_WSGM_SHDOC_CRE_STR-PLANT sy-vline 
WA_WSGM_SHDOC_CRE_STR-PSTNG_DATE sy-vline 
WA_WSGM_SHDOC_CRE_STR-PSTNG_DATE_C sy-vline 
WA_WSGM_SHDOC_CRE_STR-STATUS_INV sy-vline 
WA_WSGM_SHDOC_CRE_STR-MAT_DOC_IN sy-vline 
WA_WSGM_SHDOC_CRE_STR-DOC_YEAR_IN sy-vline 
WA_WSGM_SHDOC_CRE_STR-MOVE_TYPE sy-vline 
WA_WSGM_SHDOC_CRE_STR-X_AUTO_CRE sy-vline 
WA_WSGM_SHDOC_CRE_STR-REF_DOC_NO_VIA_EKBE sy-vline 
WA_WSGM_SHDOC_CRE_STR-DISPLAY_POS_DOC sy-vline 
WA_WSGM_SHDOC_CRE_STR-T_TR_EV_TYPE_RA sy-vline 
WA_WSGM_SHDOC_CRE_STR-VENDOR_NO sy-vline 
WA_WSGM_SHDOC_CRE_STR-SUPPL_PLNT sy-vline 
WA_WSGM_SHDOC_CRE_STR-MATERIAL sy-vline 
WA_WSGM_SHDOC_CRE_STR-CURRENT_STORE sy-vline 
WA_WSGM_SHDOC_CRE_STR-SRC_LINES_MAX sy-vline 
WA_WSGM_SHDOC_CRE_STR-T_GM_DOC_TYPE_RA sy-vline      INTO ld_text SEPARATED BY SPACE.

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