ABAP Select data from SAP table SEO_NA_MET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SEO_NA_MET
*  INTO TABLE @DATA(IT_SEO_NA_MET2).
*--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_SEO_NA_MET INDEX 1 INTO DATA(WA_SEO_NA_MET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SEO_NA_MET>-CLSNAME = 1.
<SEO_NA_MET>-CMPNAME = 1.
<SEO_NA_MET>-VERSION = 1.
<SEO_NA_MET>-LANGU = 1.
<SEO_NA_MET>-DESCRIPT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SEO_NA_MET-ALIAS, sy-vline,
  WA_SEO_NA_MET-REDEFIN, sy-vline,
  WA_SEO_NA_MET-EXPOSURE, sy-vline,
  WA_SEO_NA_MET-STATE, sy-vline,
  WA_SEO_NA_MET-EDITORDER, sy-vline,
  WA_SEO_NA_MET-DISPID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SEO_NA_MET 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_SEO_NA_MET 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_SEO_NA_MET INTO WA_SEO_NA_MET.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SEO_NA_MET-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SEO_NA_MET-LANGU.
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_SEO_NA_MET_STR, 
CLSNAME TYPE STRING,
CMPNAME TYPE STRING,
VERSION TYPE STRING,
LANGU TYPE STRING,
DESCRIPT TYPE STRING,
ALIAS TYPE STRING,
REDEFIN TYPE STRING,
EXPOSURE TYPE STRING,
STATE TYPE STRING,
EDITORDER TYPE STRING,
DISPID TYPE STRING,
AUTHOR TYPE STRING,
CREATEDON TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDON TYPE STRING,
MTDTYPE TYPE STRING,
MTDDECLTYP TYPE STRING,
MTDABSTRCT TYPE STRING,
MTDFINAL TYPE STRING,
REFCLSNAME TYPE STRING,
REFINTNAME TYPE STRING,
REFCMPNAME TYPE STRING,
DSRNOTEOM TYPE STRING,
MTDNEWEXC TYPE STRING,
LOCKED TYPE STRING,
R3RELEASE TYPE STRING,
BCMTDINST TYPE STRING,
BCMTDCAT TYPE STRING,
BCMTDDIA TYPE STRING,
BCMTDCOM TYPE STRING,
BCMTDSYN TYPE STRING,
MTDREPLACE TYPE STRING,
MTDAMDPRDONLY TYPE STRING,
MTDAMDPCDSCLNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SEO_NA_MET_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_SEO_NA_MET_STR-CLSNAME sy-vline 
WA_SEO_NA_MET_STR-CMPNAME sy-vline 
WA_SEO_NA_MET_STR-VERSION sy-vline 
WA_SEO_NA_MET_STR-LANGU sy-vline 
WA_SEO_NA_MET_STR-DESCRIPT sy-vline 
WA_SEO_NA_MET_STR-ALIAS sy-vline 
WA_SEO_NA_MET_STR-REDEFIN sy-vline 
WA_SEO_NA_MET_STR-EXPOSURE sy-vline 
WA_SEO_NA_MET_STR-STATE sy-vline 
WA_SEO_NA_MET_STR-EDITORDER sy-vline 
WA_SEO_NA_MET_STR-DISPID sy-vline 
WA_SEO_NA_MET_STR-AUTHOR sy-vline 
WA_SEO_NA_MET_STR-CREATEDON sy-vline 
WA_SEO_NA_MET_STR-CHANGEDBY sy-vline 
WA_SEO_NA_MET_STR-CHANGEDON sy-vline 
WA_SEO_NA_MET_STR-MTDTYPE sy-vline 
WA_SEO_NA_MET_STR-MTDDECLTYP sy-vline 
WA_SEO_NA_MET_STR-MTDABSTRCT sy-vline 
WA_SEO_NA_MET_STR-MTDFINAL sy-vline 
WA_SEO_NA_MET_STR-REFCLSNAME sy-vline 
WA_SEO_NA_MET_STR-REFINTNAME sy-vline 
WA_SEO_NA_MET_STR-REFCMPNAME sy-vline 
WA_SEO_NA_MET_STR-DSRNOTEOM sy-vline 
WA_SEO_NA_MET_STR-MTDNEWEXC sy-vline 
WA_SEO_NA_MET_STR-LOCKED sy-vline 
WA_SEO_NA_MET_STR-R3RELEASE sy-vline 
WA_SEO_NA_MET_STR-BCMTDINST sy-vline 
WA_SEO_NA_MET_STR-BCMTDCAT sy-vline 
WA_SEO_NA_MET_STR-BCMTDDIA sy-vline 
WA_SEO_NA_MET_STR-BCMTDCOM sy-vline 
WA_SEO_NA_MET_STR-BCMTDSYN sy-vline 
WA_SEO_NA_MET_STR-MTDREPLACE sy-vline 
WA_SEO_NA_MET_STR-MTDAMDPRDONLY sy-vline 
WA_SEO_NA_MET_STR-MTDAMDPCDSCLNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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