ABAP Select data from SAP table FMSAVE_RET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMSAVE_RET
*  INTO TABLE @DATA(IT_FMSAVE_RET2).
*--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_FMSAVE_RET INDEX 1 INTO DATA(WA_FMSAVE_RET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMSAVE_RET>-MANDT = 1.
<FMSAVE_RET>-APPL = 1.
<FMSAVE_RET>-BUKRS = 1.
<FMSAVE_RET>-FIKRS = 1.
<FMSAVE_RET>-LIFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMSAVE_RET-KUNNR, sy-vline,
  WA_FMSAVE_RET-LNRZA, sy-vline,
  WA_FMSAVE_RET-ZHLDT, sy-vline,
  WA_FMSAVE_RET-CPUDT, sy-vline,
  WA_FMSAVE_RET-BLDAT, sy-vline,
  WA_FMSAVE_RET-BUDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMSAVE_RET 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_FMSAVE_RET 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_FMSAVE_RET INTO WA_FMSAVE_RET.


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

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

*Conversion exit ALPHA, internal->external for field LNRZA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMSAVE_RET-LNRZA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMSAVE_RET-LNRZA.
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_FMSAVE_RET_STR, 
MANDT TYPE STRING,
APPL TYPE STRING,
BUKRS TYPE STRING,
FIKRS TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
LNRZA TYPE STRING,
ZHLDT TYPE STRING,
CPUDT TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
DUE_DATE TYPE STRING,
KERDAT TYPE STRING,
COMPLETE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMSAVE_RET_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_FMSAVE_RET_STR-MANDT sy-vline 
WA_FMSAVE_RET_STR-APPL sy-vline 
WA_FMSAVE_RET_STR-BUKRS sy-vline 
WA_FMSAVE_RET_STR-FIKRS sy-vline 
WA_FMSAVE_RET_STR-LIFNR sy-vline 
WA_FMSAVE_RET_STR-KUNNR sy-vline 
WA_FMSAVE_RET_STR-LNRZA sy-vline 
WA_FMSAVE_RET_STR-ZHLDT sy-vline 
WA_FMSAVE_RET_STR-CPUDT sy-vline 
WA_FMSAVE_RET_STR-BLDAT sy-vline 
WA_FMSAVE_RET_STR-BUDAT sy-vline 
WA_FMSAVE_RET_STR-DUE_DATE sy-vline 
WA_FMSAVE_RET_STR-KERDAT sy-vline 
WA_FMSAVE_RET_STR-COMPLETE sy-vline      INTO ld_text SEPARATED BY SPACE.

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