SAP T000MD ABAP Select data from SAP table
Below is a number of ABAP code snippets to demonstrate how to select data from SAP T000MD 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 T000MD. 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 T000MD 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_T000MD TYPE STANDARD TABLE OF T000MD,
WA_T000MD TYPE T000MD,
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: <T000MD> TYPE T000MD.
*Process all fields in table header/work area as string values
PERFORM process_as_string_field_values CHANGING wa_T000MD.
SELECT *
*restrict ABAP select to first 10 rows
UP TO 10 ROWS
FROM T000MD
INTO TABLE IT_T000MD.
*Select data and declare internal table using in-line method @DATA
*SELECT *
* FROM T000MD
* INTO TABLE @DATA(IT_T000MD2).
*--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_T000MD INDEX 1 INTO DATA(WA_T000MD2).
*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T000MD ASSIGNING <T000MD>.
*To update a field value using a field symbol simply change the value via the field symbol pointer<T000MD>-MANDT = 1.
<T000MD>-DISFG = 1.
<T000MD>-UDBVM = 1.
ENDLOOP.
LOOP AT IT_T000MD INTO WA_T000MD.
*Write horizonal line to screen report.
WRITE:/ sy-uline.
*Write selected data to screen/report before conversion.
WRITE:/ sy-vline, ENDLOOP.
*Add any further fields from structure WA_T000MD 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_T000MD 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_T000MD INTO WA_T000MD.
*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_T000MD_STR,
MANDT TYPE STRING,
DISFG TYPE STRING,
UDBVM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T000MD_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_T000MD_STR-MANDT sy-vline
WA_T000MD_STR-DISFG sy-vline
WA_T000MD_STR-UDBVM sy-vline INTO ld_text SEPARATED BY SPACE.
*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.
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