ABAP Select data from SAP table GRCSPG_CONTRACT_ACCOUNT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRCSPG_CONTRACT_ACCOUNT
*  INTO TABLE @DATA(IT_GRCSPG_CONTRACT_ACCOUNT2).
*--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_GRCSPG_CONTRACT_ACCOUNT INDEX 1 INTO DATA(WA_GRCSPG_CONTRACT_ACCOUNT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRCSPG_CONTRACT_ACCOUNT>-VKONT = 1.
<GRCSPG_CONTRACT_ACCOUNT>-ERDAT = 1.
<GRCSPG_CONTRACT_ACCOUNT>-ERNAM = 1.
<GRCSPG_CONTRACT_ACCOUNT>-LOEVM = 1.
<GRCSPG_CONTRACT_ACCOUNT>-APPLK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRCSPG_CONTRACT_ACCOUNT-VKTYP, sy-vline,
  WA_GRCSPG_CONTRACT_ACCOUNT-VKONA, sy-vline,
  WA_GRCSPG_CONTRACT_ACCOUNT-GPART, sy-vline,
  WA_GRCSPG_CONTRACT_ACCOUNT-OPBUK, sy-vline,
  WA_GRCSPG_CONTRACT_ACCOUNT-BUKRS, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_GRCSPG_CONTRACT_ACCOUNT 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_GRCSPG_CONTRACT_ACCOUNT 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_GRCSPG_CONTRACT_ACCOUNT INTO WA_GRCSPG_CONTRACT_ACCOUNT.


*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 VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GRCSPG_CONTRACT_ACCOUNT-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRCSPG_CONTRACT_ACCOUNT-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GRCSPG_CONTRACT_ACCOUNT-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRCSPG_CONTRACT_ACCOUNT-GPART.
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_GRCSPG_CONTRACT_ACCOUNT_STR, 
VKONT TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
LOEVM TYPE STRING,
APPLK TYPE STRING,
VKTYP TYPE STRING,
VKONA TYPE STRING,
GPART TYPE STRING,
OPBUK TYPE STRING,
BUKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRCSPG_CONTRACT_ACCOUNT_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_GRCSPG_CONTRACT_ACCOUNT_STR-VKONT sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-ERDAT sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-ERNAM sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-LOEVM sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-APPLK sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-VKTYP sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-VKONA sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-GPART sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-OPBUK sy-vline 
WA_GRCSPG_CONTRACT_ACCOUNT_STR-BUKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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