ABAP Select data from SAP table SLIM3_S_MMETA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SLIM3_S_MMETA 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 SLIM3_S_MMETA. 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 SLIM3_S_MMETA 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_SLIM3_S_MMETA TYPE STANDARD TABLE OF SLIM3_S_MMETA,
      WA_SLIM3_S_MMETA TYPE SLIM3_S_MMETA,
      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: <SLIM3_S_MMETA> TYPE SLIM3_S_MMETA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SLIM3_S_MMETA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SLIM3_S_MMETA
  INTO TABLE IT_SLIM3_S_MMETA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLIM3_S_MMETA
*  INTO TABLE @DATA(IT_SLIM3_S_MMETA2).
*--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_SLIM3_S_MMETA INDEX 1 INTO DATA(WA_SLIM3_S_MMETA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SLIM3_S_MMETA ASSIGNING <SLIM3_S_MMETA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLIM3_S_MMETA>-TUSER = 1.
<SLIM3_S_MMETA>-MUSER = 1.
<SLIM3_S_MMETA>-MDATE = 1.
<SLIM3_S_MMETA>-MTIME = 1.
<SLIM3_S_MMETA>-MID = 1.

ENDLOOP.

LOOP AT IT_SLIM3_S_MMETA INTO WA_SLIM3_S_MMETA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLIM3_S_MMETA-MTYPE, sy-vline,
  WA_SLIM3_S_MMETA-TSTAT, sy-vline,
  WA_SLIM3_S_MMETA-DEF_UTYPE, sy-vline,
  WA_SLIM3_S_MMETA-VERS, sy-vline,
  WA_SLIM3_S_MMETA-CO_SYSNO, sy-vline,
  WA_SLIM3_S_MMETA-ADDR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLIM3_S_MMETA 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_SLIM3_S_MMETA 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_SLIM3_S_MMETA INTO WA_SLIM3_S_MMETA.


*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_SLIM3_S_MMETA_STR, 
TUSER TYPE STRING,
MUSER TYPE STRING,
MDATE TYPE STRING,
MTIME TYPE STRING,
MID TYPE STRING,
MTYPE TYPE STRING,
TSTAT TYPE STRING,
DEF_UTYPE TYPE STRING,
VERS TYPE STRING,
CO_SYSNO TYPE STRING,
ADDR TYPE STRING,
SENDER1 TYPE STRING,
SENDER2 TYPE STRING,
SENDER3 TYPE STRING,
SENDER4 TYPE STRING,
SENDER5 TYPE STRING,
SENDER6 TYPE STRING,
EMAIL1 TYPE STRING,
EMAIL2 TYPE STRING,
EMAIL3 TYPE STRING,
EMAIL4 TYPE STRING,
RECIPIENT1 TYPE STRING,
RECIPIENT2 TYPE STRING,
RECIPIENT3 TYPE STRING,
RECIPIENT4 TYPE STRING,
RECIPIENT5 TYPE STRING,
FAX TYPE STRING,
MESSAGE TYPE STRING,
INVENTORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLIM3_S_MMETA_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_SLIM3_S_MMETA_STR-TUSER sy-vline 
WA_SLIM3_S_MMETA_STR-MUSER sy-vline 
WA_SLIM3_S_MMETA_STR-MDATE sy-vline 
WA_SLIM3_S_MMETA_STR-MTIME sy-vline 
WA_SLIM3_S_MMETA_STR-MID sy-vline 
WA_SLIM3_S_MMETA_STR-MTYPE sy-vline 
WA_SLIM3_S_MMETA_STR-TSTAT sy-vline 
WA_SLIM3_S_MMETA_STR-DEF_UTYPE sy-vline 
WA_SLIM3_S_MMETA_STR-VERS sy-vline 
WA_SLIM3_S_MMETA_STR-CO_SYSNO sy-vline 
WA_SLIM3_S_MMETA_STR-ADDR sy-vline 
WA_SLIM3_S_MMETA_STR-SENDER1 sy-vline 
WA_SLIM3_S_MMETA_STR-SENDER2 sy-vline 
WA_SLIM3_S_MMETA_STR-SENDER3 sy-vline 
WA_SLIM3_S_MMETA_STR-SENDER4 sy-vline 
WA_SLIM3_S_MMETA_STR-SENDER5 sy-vline 
WA_SLIM3_S_MMETA_STR-SENDER6 sy-vline 
WA_SLIM3_S_MMETA_STR-EMAIL1 sy-vline 
WA_SLIM3_S_MMETA_STR-EMAIL2 sy-vline 
WA_SLIM3_S_MMETA_STR-EMAIL3 sy-vline 
WA_SLIM3_S_MMETA_STR-EMAIL4 sy-vline 
WA_SLIM3_S_MMETA_STR-RECIPIENT1 sy-vline 
WA_SLIM3_S_MMETA_STR-RECIPIENT2 sy-vline 
WA_SLIM3_S_MMETA_STR-RECIPIENT3 sy-vline 
WA_SLIM3_S_MMETA_STR-RECIPIENT4 sy-vline 
WA_SLIM3_S_MMETA_STR-RECIPIENT5 sy-vline 
WA_SLIM3_S_MMETA_STR-FAX sy-vline 
WA_SLIM3_S_MMETA_STR-MESSAGE sy-vline 
WA_SLIM3_S_MMETA_STR-INVENTORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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