ABAP Select data from SAP table RN1FATMT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1FATMT 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 RN1FATMT. 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 RN1FATMT 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_RN1FATMT TYPE STANDARD TABLE OF RN1FATMT,
      WA_RN1FATMT TYPE RN1FATMT,
      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: <RN1FATMT> TYPE RN1FATMT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1FATMT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1FATMT
  INTO TABLE IT_RN1FATMT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1FATMT
*  INTO TABLE @DATA(IT_RN1FATMT2).
*--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_RN1FATMT INDEX 1 INTO DATA(WA_RN1FATMT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1FATMT ASSIGNING <RN1FATMT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1FATMT>-DATAG = 1.
<RN1FATMT>-UZTAG = 1.
<RN1FATMT>-UZTAG_5 = 1.
<RN1FATMT>-ORGAG = 1.
<RN1FATMT>-ORGAG_KB = 1.

ENDLOOP.

LOOP AT IT_RN1FATMT INTO WA_RN1FATMT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1FATMT-BAUAG, sy-vline,
  WA_RN1FATMT-TMNAG, sy-vline,
  WA_RN1FATMT-DATZL, sy-vline,
  WA_RN1FATMT-UZTZL, sy-vline,
  WA_RN1FATMT-UZTZL_5, sy-vline,
  WA_RN1FATMT-ORGZL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1FATMT 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_RN1FATMT 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_RN1FATMT INTO WA_RN1FATMT.


*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 ORGAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-ORGAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-ORGAG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BAUAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-BAUAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-BAUAG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TMNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-TMNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-TMNAG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGZL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-ORGZL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-ORGZL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BAUZL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-BAUZL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-BAUZL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TMNZL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-TMNZL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-TMNZL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PAPID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-PAPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-PAPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FHRID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1FATMT-FHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1FATMT-FHRID.
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_RN1FATMT_STR, 
DATAG TYPE STRING,
UZTAG TYPE STRING,
UZTAG_5 TYPE STRING,
ORGAG TYPE STRING,
ORGAG_KB TYPE STRING,
BAUAG TYPE STRING,
TMNAG TYPE STRING,
DATZL TYPE STRING,
UZTZL TYPE STRING,
UZTZL_5 TYPE STRING,
ORGZL TYPE STRING,
ORGZL_KB TYPE STRING,
BAUZL TYPE STRING,
TMNZL TYPE STRING,
TMNZT TYPE STRING,
TPTIC TYPE STRING,
PATNR TYPE STRING,
PAPID TYPE STRING,
TPTYP TYPE STRING,
CNAME TYPE STRING,
TPAE TYPE STRING,
GSCHE TYPE STRING,
TPPRI TYPE STRING,
FSTID TYPE STRING,
FSTIC TYPE STRING,
FATID TYPE STRING,
FHRID TYPE STRING,
NNAMS TYPE STRING,
NNAME TYPE STRING,
VNAMS TYPE STRING,
VNAME TYPE STRING,
GSCHL TYPE STRING,
GBDAT TYPE STRING,
PAT_ALT TYPE STRING,
CNAMS TYPE STRING,
FIELD TYPE STRING,
ANFID TYPE STRING,
CTRID TYPE STRING,
REMRK TYPE STRING,
TPATXT TYPE STRING,
APRIE TYPE STRING,
APRITXT TYPE STRING,
TRANS TYPE STRING,
TRANSTXT TYPE STRING,
TRAVA TYPE STRING,
TRAVA_ICON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1FATMT_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_RN1FATMT_STR-DATAG sy-vline 
WA_RN1FATMT_STR-UZTAG sy-vline 
WA_RN1FATMT_STR-UZTAG_5 sy-vline 
WA_RN1FATMT_STR-ORGAG sy-vline 
WA_RN1FATMT_STR-ORGAG_KB sy-vline 
WA_RN1FATMT_STR-BAUAG sy-vline 
WA_RN1FATMT_STR-TMNAG sy-vline 
WA_RN1FATMT_STR-DATZL sy-vline 
WA_RN1FATMT_STR-UZTZL sy-vline 
WA_RN1FATMT_STR-UZTZL_5 sy-vline 
WA_RN1FATMT_STR-ORGZL sy-vline 
WA_RN1FATMT_STR-ORGZL_KB sy-vline 
WA_RN1FATMT_STR-BAUZL sy-vline 
WA_RN1FATMT_STR-TMNZL sy-vline 
WA_RN1FATMT_STR-TMNZT sy-vline 
WA_RN1FATMT_STR-TPTIC sy-vline 
WA_RN1FATMT_STR-PATNR sy-vline 
WA_RN1FATMT_STR-PAPID sy-vline 
WA_RN1FATMT_STR-TPTYP sy-vline 
WA_RN1FATMT_STR-CNAME sy-vline 
WA_RN1FATMT_STR-TPAE sy-vline 
WA_RN1FATMT_STR-GSCHE sy-vline 
WA_RN1FATMT_STR-TPPRI sy-vline 
WA_RN1FATMT_STR-FSTID sy-vline 
WA_RN1FATMT_STR-FSTIC sy-vline 
WA_RN1FATMT_STR-FATID sy-vline 
WA_RN1FATMT_STR-FHRID sy-vline 
WA_RN1FATMT_STR-NNAMS sy-vline 
WA_RN1FATMT_STR-NNAME sy-vline 
WA_RN1FATMT_STR-VNAMS sy-vline 
WA_RN1FATMT_STR-VNAME sy-vline 
WA_RN1FATMT_STR-GSCHL sy-vline 
WA_RN1FATMT_STR-GBDAT sy-vline 
WA_RN1FATMT_STR-PAT_ALT sy-vline 
WA_RN1FATMT_STR-CNAMS sy-vline 
WA_RN1FATMT_STR-FIELD sy-vline 
WA_RN1FATMT_STR-ANFID sy-vline 
WA_RN1FATMT_STR-CTRID sy-vline 
WA_RN1FATMT_STR-REMRK sy-vline 
WA_RN1FATMT_STR-TPATXT sy-vline 
WA_RN1FATMT_STR-APRIE sy-vline 
WA_RN1FATMT_STR-APRITXT sy-vline 
WA_RN1FATMT_STR-TRANS sy-vline 
WA_RN1FATMT_STR-TRANSTXT sy-vline 
WA_RN1FATMT_STR-TRAVA sy-vline 
WA_RN1FATMT_STR-TRAVA_ICON sy-vline      INTO ld_text SEPARATED BY SPACE.

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