ABAP Select data from SAP table /FLDQ/AD_MTCCODE_STRUC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /FLDQ/AD_MTCCODE_STRUC 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 /FLDQ/AD_MTCCODE_STRUC. 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 /FLDQ/AD_MTCCODE_STRUC 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_/FLDQ/AD_MTCCODE_STRUC TYPE STANDARD TABLE OF /FLDQ/AD_MTCCODE_STRUC,
      WA_/FLDQ/AD_MTCCODE_STRUC TYPE /FLDQ/AD_MTCCODE_STRUC,
      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: </FLDQ/AD_MTCCODE_STRUC> TYPE /FLDQ/AD_MTCCODE_STRUC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /FLDQ/AD_MTCCODE_STRUC
  INTO TABLE IT_/FLDQ/AD_MTCCODE_STRUC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /FLDQ/AD_MTCCODE_STRUC
*  INTO TABLE @DATA(IT_/FLDQ/AD_MTCCODE_STRUC2).
*--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_/FLDQ/AD_MTCCODE_STRUC INDEX 1 INTO DATA(WA_/FLDQ/AD_MTCCODE_STRUC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/FLDQ/AD_MTCCODE_STRUC ASSIGNING </FLDQ/AD_MTCCODE_STRUC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</FLDQ/AD_MTCCODE_STRUC>-MATCH_CODE1 = 1.
</FLDQ/AD_MTCCODE_STRUC>-PO_MATCH_CODE = 1.
</FLDQ/AD_MTCCODE_STRUC>-MTC_CODE_NM1 = 1.
</FLDQ/AD_MTCCODE_STRUC>-MTC_CODE_NM2 = 1.
</FLDQ/AD_MTCCODE_STRUC>-MTC_CODE_NM3 = 1.

ENDLOOP.

LOOP AT IT_/FLDQ/AD_MTCCODE_STRUC INTO WA_/FLDQ/AD_MTCCODE_STRUC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/FLDQ/AD_MTCCODE_STRUC-MTC_CODE_NM4, sy-vline,
  WA_/FLDQ/AD_MTCCODE_STRUC-MTC_CODE_NM5, sy-vline,
  WA_/FLDQ/AD_MTCCODE_STRUC-DEPARTMENT, sy-vline,
  WA_/FLDQ/AD_MTCCODE_STRUC-FUNCTION, sy-vline,
  WA_/FLDQ/AD_MTCCODE_STRUC-ID_CODE, sy-vline,
  WA_/FLDQ/AD_MTCCODE_STRUC-IH_MAIL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/FLDQ/AD_MTCCODE_STRUC 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_/FLDQ/AD_MTCCODE_STRUC 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_/FLDQ/AD_MTCCODE_STRUC INTO WA_/FLDQ/AD_MTCCODE_STRUC.


*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 SXIDN, internal->external for field SMTP_ADDR
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_/FLDQ/AD_MTCCODE_STRUC-SMTP_ADDR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/FLDQ/AD_MTCCODE_STRUC-SMTP_ADDR.
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_/FLDQ/AD_MTCCODE_STRUC_STR, 
MATCH_CODE1 TYPE STRING,
PO_MATCH_CODE TYPE STRING,
MTC_CODE_NM1 TYPE STRING,
MTC_CODE_NM2 TYPE STRING,
MTC_CODE_NM3 TYPE STRING,
MTC_CODE_NM4 TYPE STRING,
MTC_CODE_NM5 TYPE STRING,
DEPARTMENT TYPE STRING,
FUNCTION TYPE STRING,
ID_CODE TYPE STRING,
IH_MAIL TYPE STRING,
ROOMNUMBER TYPE STRING,
BUILDING TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
COUNTRY TYPE STRING,
FLOOR TYPE STRING,
HOUSE_NUM1 TYPE STRING,
HOUSE_NUM2 TYPE STRING,
LOCATION TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
NAME_CO TYPE STRING,
POST_CODE1 TYPE STRING,
POST_CODE2 TYPE STRING,
POST_CODE3 TYPE STRING,
PO_BOX TYPE STRING,
PO_BOX_LOC TYPE STRING,
PO_BOX_CTY TYPE STRING,
REGION TYPE STRING,
SORT1 TYPE STRING,
SORT2 TYPE STRING,
STREET TYPE STRING,
STR_SUPPL1 TYPE STRING,
STR_SUPPL2 TYPE STRING,
STR_SUPPL3 TYPE STRING,
NAME_FIRST TYPE STRING,
NAME_LAST TYPE STRING,
SMTP_ADDR TYPE STRING,
TEL_NUMBER TYPE STRING,
TEL_EXTENS TYPE STRING,
PO_BOX_LOBBY TYPE STRING,
EXTRA1 TYPE STRING,
EXTRA2 TYPE STRING,
MTCSTD1 TYPE STRING,
MTCSTD2 TYPE STRING,
BIRTHDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/FLDQ/AD_MTCCODE_STRUC_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_/FLDQ/AD_MTCCODE_STRUC_STR-MATCH_CODE1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-PO_MATCH_CODE sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-MTC_CODE_NM1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-MTC_CODE_NM2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-MTC_CODE_NM3 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-MTC_CODE_NM4 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-MTC_CODE_NM5 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-DEPARTMENT sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-FUNCTION sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-ID_CODE sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-IH_MAIL sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-ROOMNUMBER sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-BUILDING sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-CITY1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-CITY2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-COUNTRY sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-FLOOR sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-HOUSE_NUM1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-HOUSE_NUM2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-LOCATION sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-NAME1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-NAME2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-NAME3 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-NAME4 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-NAME_CO sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-POST_CODE1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-POST_CODE2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-POST_CODE3 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-PO_BOX sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-PO_BOX_LOC sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-PO_BOX_CTY sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-REGION sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-SORT1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-SORT2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-STREET sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-STR_SUPPL1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-STR_SUPPL2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-STR_SUPPL3 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-NAME_FIRST sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-NAME_LAST sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-SMTP_ADDR sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-TEL_NUMBER sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-TEL_EXTENS sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-PO_BOX_LOBBY sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-EXTRA1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-EXTRA2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-MTCSTD1 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-MTCSTD2 sy-vline 
WA_/FLDQ/AD_MTCCODE_STRUC_STR-BIRTHDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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