ABAP Select data from SAP table CREDITMEMO into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CREDITMEMO 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 CREDITMEMO. 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 CREDITMEMO 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_CREDITMEMO TYPE STANDARD TABLE OF CREDITMEMO,
      WA_CREDITMEMO TYPE CREDITMEMO,
      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: <CREDITMEMO> TYPE CREDITMEMO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CREDITMEMO
*  INTO TABLE @DATA(IT_CREDITMEMO2).
*--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_CREDITMEMO INDEX 1 INTO DATA(WA_CREDITMEMO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CREDITMEMO>-MANDT = 1.
<CREDITMEMO>-CREDITMEMOREQUEST = 1.
<CREDITMEMO>-CREDITMEMOREQUESTTYPE = 1.
<CREDITMEMO>-CUSTOMERACCOUNTGROUP = 1.
<CREDITMEMO>-TRANSACTIONCURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CREDITMEMO-TOTALNETAMOUNT, sy-vline,
  WA_CREDITMEMO-HEADERBILLINGBLOCKREASON, sy-vline,
  WA_CREDITMEMO-OVERALLSDPROCESSSTATUSDESC, sy-vline,
  WA_CREDITMEMO-OVERALLSDPROCESSSTATUS, sy-vline,
  WA_CREDITMEMO-OVERALLBILLINGBLOCKSTATUS, sy-vline,
  WA_CREDITMEMO-SALESORGANIZATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CREDITMEMO 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_CREDITMEMO 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_CREDITMEMO INTO WA_CREDITMEMO.


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

*Conversion exit AUART, internal->external for field CREDITMEMOREQUESTTYPE
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_CREDITMEMO-CREDITMEMOREQUESTTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CREDITMEMO-CREDITMEMOREQUESTTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CREDITMEMO-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CREDITMEMO-SOLDTOPARTY.
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_CREDITMEMO_STR, 
MANDT TYPE STRING,
CREDITMEMOREQUEST TYPE STRING,
CREDITMEMOREQUESTTYPE TYPE STRING,
CUSTOMERACCOUNTGROUP TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
HEADERBILLINGBLOCKREASON TYPE STRING,
OVERALLSDPROCESSSTATUSDESC TYPE STRING,
OVERALLSDPROCESSSTATUS TYPE STRING,
OVERALLBILLINGBLOCKSTATUS TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
ORGANIZATIONDIVISION TYPE STRING,
SOLDTOPARTY TYPE STRING,
CUSTOMERCLASSIFICATION TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
SALESOFFICE TYPE STRING,
SALESGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CREDITMEMO_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_CREDITMEMO_STR-MANDT sy-vline 
WA_CREDITMEMO_STR-CREDITMEMOREQUEST sy-vline 
WA_CREDITMEMO_STR-CREDITMEMOREQUESTTYPE sy-vline 
WA_CREDITMEMO_STR-CUSTOMERACCOUNTGROUP sy-vline 
WA_CREDITMEMO_STR-TRANSACTIONCURRENCY sy-vline 
WA_CREDITMEMO_STR-TOTALNETAMOUNT sy-vline 
WA_CREDITMEMO_STR-HEADERBILLINGBLOCKREASON sy-vline 
WA_CREDITMEMO_STR-OVERALLSDPROCESSSTATUSDESC sy-vline 
WA_CREDITMEMO_STR-OVERALLSDPROCESSSTATUS sy-vline 
WA_CREDITMEMO_STR-OVERALLBILLINGBLOCKSTATUS sy-vline 
WA_CREDITMEMO_STR-SALESORGANIZATION sy-vline 
WA_CREDITMEMO_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_CREDITMEMO_STR-ORGANIZATIONDIVISION sy-vline 
WA_CREDITMEMO_STR-SOLDTOPARTY sy-vline 
WA_CREDITMEMO_STR-CUSTOMERCLASSIFICATION sy-vline 
WA_CREDITMEMO_STR-LASTCHANGEDATETIME sy-vline 
WA_CREDITMEMO_STR-CREATEDBYUSER sy-vline 
WA_CREDITMEMO_STR-LASTCHANGEDBYUSER sy-vline 
WA_CREDITMEMO_STR-SALESOFFICE sy-vline 
WA_CREDITMEMO_STR-SALESGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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