ABAP Select data from SAP table FMCA_RETURN_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMCA_RETURN_X
*  INTO TABLE @DATA(IT_FMCA_RETURN_X2).
*--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_FMCA_RETURN_X INDEX 1 INTO DATA(WA_FMCA_RETURN_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMCA_RETURN_X>-CASE_GUID = 1.
<FMCA_RETURN_X>-REVENUE_TYPE = 1.
<FMCA_RETURN_X>-TAXPAYER = 1.
<FMCA_RETURN_X>-JOINT_FILER = 1.
<FMCA_RETURN_X>-BU_ID_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMCA_RETURN_X-TAXPAYER_ID, sy-vline,
  WA_FMCA_RETURN_X-JOINT_ID_TYPE, sy-vline,
  WA_FMCA_RETURN_X-JOINT_FILER_ID, sy-vline,
  WA_FMCA_RETURN_X-ACCOUNT, sy-vline,
  WA_FMCA_RETURN_X-REG_ID, sy-vline,
  WA_FMCA_RETURN_X-REG_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMCA_RETURN_X 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_FMCA_RETURN_X 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_FMCA_RETURN_X INTO WA_FMCA_RETURN_X.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FMCA_RETURN_X_STR, 
CASE_GUID TYPE STRING,
REVENUE_TYPE TYPE STRING,
TAXPAYER TYPE STRING,
JOINT_FILER TYPE STRING,
BU_ID_TYPE TYPE STRING,
TAXPAYER_ID TYPE STRING,
JOINT_ID_TYPE TYPE STRING,
JOINT_FILER_ID TYPE STRING,
ACCOUNT TYPE STRING,
REG_ID TYPE STRING,
REG_TYPE TYPE STRING,
JOINT_ACCOUNT TYPE STRING,
JOINT_REG_ID TYPE STRING,
JOINT_REG_TYPE TYPE STRING,
APPLY_FROM TYPE STRING,
APPLY_TO TYPE STRING,
PERIOD_KEY TYPE STRING,
BEGRU TYPE STRING,
CONSOLIDATED_BY TYPE STRING,
DUPLICATE_TO TYPE STRING,
FORMPROC TYPE STRING,
X_CONS TYPE STRING,
FBTYP TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
KEYDT TYPE STRING,
VALIDATION TYPE STRING,
POSTMARK TYPE STRING,
RECEIPT TYPE STRING,
DUE_DATE TYPE STRING,
DEFERRAL_DATE TYPE STRING,
REFUND_COMPLETE TYPE STRING,
POSTMARK_EXT TYPE STRING,
RECONCILIATION TYPE STRING,
LAST_FILING TYPE STRING,
AS_FILED_EXT TYPE STRING,
DATE_SOL TYPE STRING,
BATCH_ID TYPE STRING,
LOCATOR_NUMBER TYPE STRING,
TRANSACTION_TYPE TYPE STRING,
IN_CHANNEL TYPE STRING,
TAX_PREPARER TYPE STRING,
KEYPP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMCA_RETURN_X_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_FMCA_RETURN_X_STR-CASE_GUID sy-vline 
WA_FMCA_RETURN_X_STR-REVENUE_TYPE sy-vline 
WA_FMCA_RETURN_X_STR-TAXPAYER sy-vline 
WA_FMCA_RETURN_X_STR-JOINT_FILER sy-vline 
WA_FMCA_RETURN_X_STR-BU_ID_TYPE sy-vline 
WA_FMCA_RETURN_X_STR-TAXPAYER_ID sy-vline 
WA_FMCA_RETURN_X_STR-JOINT_ID_TYPE sy-vline 
WA_FMCA_RETURN_X_STR-JOINT_FILER_ID sy-vline 
WA_FMCA_RETURN_X_STR-ACCOUNT sy-vline 
WA_FMCA_RETURN_X_STR-REG_ID sy-vline 
WA_FMCA_RETURN_X_STR-REG_TYPE sy-vline 
WA_FMCA_RETURN_X_STR-JOINT_ACCOUNT sy-vline 
WA_FMCA_RETURN_X_STR-JOINT_REG_ID sy-vline 
WA_FMCA_RETURN_X_STR-JOINT_REG_TYPE sy-vline 
WA_FMCA_RETURN_X_STR-APPLY_FROM sy-vline 
WA_FMCA_RETURN_X_STR-APPLY_TO sy-vline 
WA_FMCA_RETURN_X_STR-PERIOD_KEY sy-vline 
WA_FMCA_RETURN_X_STR-BEGRU sy-vline 
WA_FMCA_RETURN_X_STR-CONSOLIDATED_BY sy-vline 
WA_FMCA_RETURN_X_STR-DUPLICATE_TO sy-vline 
WA_FMCA_RETURN_X_STR-FORMPROC sy-vline 
WA_FMCA_RETURN_X_STR-X_CONS sy-vline 
WA_FMCA_RETURN_X_STR-FBTYP sy-vline 
WA_FMCA_RETURN_X_STR-BETRW sy-vline 
WA_FMCA_RETURN_X_STR-WAERS sy-vline 
WA_FMCA_RETURN_X_STR-KEYDT sy-vline 
WA_FMCA_RETURN_X_STR-VALIDATION sy-vline 
WA_FMCA_RETURN_X_STR-POSTMARK sy-vline 
WA_FMCA_RETURN_X_STR-RECEIPT sy-vline 
WA_FMCA_RETURN_X_STR-DUE_DATE sy-vline 
WA_FMCA_RETURN_X_STR-DEFERRAL_DATE sy-vline 
WA_FMCA_RETURN_X_STR-REFUND_COMPLETE sy-vline 
WA_FMCA_RETURN_X_STR-POSTMARK_EXT sy-vline 
WA_FMCA_RETURN_X_STR-RECONCILIATION sy-vline 
WA_FMCA_RETURN_X_STR-LAST_FILING sy-vline 
WA_FMCA_RETURN_X_STR-AS_FILED_EXT sy-vline 
WA_FMCA_RETURN_X_STR-DATE_SOL sy-vline 
WA_FMCA_RETURN_X_STR-BATCH_ID sy-vline 
WA_FMCA_RETURN_X_STR-LOCATOR_NUMBER sy-vline 
WA_FMCA_RETURN_X_STR-TRANSACTION_TYPE sy-vline 
WA_FMCA_RETURN_X_STR-IN_CHANNEL sy-vline 
WA_FMCA_RETURN_X_STR-TAX_PREPARER sy-vline 
WA_FMCA_RETURN_X_STR-KEYPP sy-vline      INTO ld_text SEPARATED BY SPACE.

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