ABAP Select data from SAP table WGMP_SRS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WGMP_SRS
*  INTO TABLE @DATA(IT_WGMP_SRS2).
*--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_WGMP_SRS INDEX 1 INTO DATA(WA_WGMP_SRS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WGMP_SRS>-MANDT = 1.
<WGMP_SRS>-SRS_PLANT = 1.
<WGMP_SRS>-GM_NO = 1.
<WGMP_SRS>-GM_IT = 1.
<WGMP_SRS>-REF_DOC_IT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WGMP_SRS-MATERIAL, sy-vline,
  WA_WGMP_SRS-EAN_UPC, sy-vline,
  WA_WGMP_SRS-MATL_CAT, sy-vline,
  WA_WGMP_SRS-ENTRY_QNT, sy-vline,
  WA_WGMP_SRS-ENTRY_UOM, sy-vline,
  WA_WGMP_SRS-PO_PR_QNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WGMP_SRS 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_WGMP_SRS 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_WGMP_SRS INTO WA_WGMP_SRS.


*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
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WGMP_SRS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WGMP_SRS-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN_UPC
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_WGMP_SRS-EAN_UPC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WGMP_SRS-EAN_UPC.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MOVE_MAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WGMP_SRS-MOVE_MAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WGMP_SRS-MOVE_MAT.
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_WGMP_SRS_STR, 
MANDT TYPE STRING,
SRS_PLANT TYPE STRING,
GM_NO TYPE STRING,
GM_IT TYPE STRING,
REF_DOC_IT TYPE STRING,
MATERIAL TYPE STRING,
EAN_UPC TYPE STRING,
MATL_CAT TYPE STRING,
ENTRY_QNT TYPE STRING,
ENTRY_UOM TYPE STRING,
PO_PR_QNT TYPE STRING,
ORDERPR_UN TYPE STRING,
BATCH TYPE STRING,
EXPIRYCONTR TYPE STRING,
EXPIRYDATE TYPE STRING,
NO_MORE_GR TYPE STRING,
ITEM_TEXT TYPE STRING,
MOVE_MAT TYPE STRING,
RET_IT TYPE STRING,
AMOUNT_SV TYPE STRING,
MOVE_REAS TYPE STRING,
CL TYPE STRING,
MSG_NO TYPE STRING,
PAR1 TYPE STRING,
PAR2 TYPE STRING,
PAR3 TYPE STRING,
PAR4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WGMP_SRS_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_WGMP_SRS_STR-MANDT sy-vline 
WA_WGMP_SRS_STR-SRS_PLANT sy-vline 
WA_WGMP_SRS_STR-GM_NO sy-vline 
WA_WGMP_SRS_STR-GM_IT sy-vline 
WA_WGMP_SRS_STR-REF_DOC_IT sy-vline 
WA_WGMP_SRS_STR-MATERIAL sy-vline 
WA_WGMP_SRS_STR-EAN_UPC sy-vline 
WA_WGMP_SRS_STR-MATL_CAT sy-vline 
WA_WGMP_SRS_STR-ENTRY_QNT sy-vline 
WA_WGMP_SRS_STR-ENTRY_UOM sy-vline 
WA_WGMP_SRS_STR-PO_PR_QNT sy-vline 
WA_WGMP_SRS_STR-ORDERPR_UN sy-vline 
WA_WGMP_SRS_STR-BATCH sy-vline 
WA_WGMP_SRS_STR-EXPIRYCONTR sy-vline 
WA_WGMP_SRS_STR-EXPIRYDATE sy-vline 
WA_WGMP_SRS_STR-NO_MORE_GR sy-vline 
WA_WGMP_SRS_STR-ITEM_TEXT sy-vline 
WA_WGMP_SRS_STR-MOVE_MAT sy-vline 
WA_WGMP_SRS_STR-RET_IT sy-vline 
WA_WGMP_SRS_STR-AMOUNT_SV sy-vline 
WA_WGMP_SRS_STR-MOVE_REAS sy-vline 
WA_WGMP_SRS_STR-CL sy-vline 
WA_WGMP_SRS_STR-MSG_NO sy-vline 
WA_WGMP_SRS_STR-PAR1 sy-vline 
WA_WGMP_SRS_STR-PAR2 sy-vline 
WA_WGMP_SRS_STR-PAR3 sy-vline 
WA_WGMP_SRS_STR-PAR4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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