ABAP Select data from SAP table /1FB/MD___000006 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /1FB/MD___000006 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 /1FB/MD___000006. 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 /1FB/MD___000006 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_/1FB/MD___000006 TYPE STANDARD TABLE OF /1FB/MD___000006,
      WA_/1FB/MD___000006 TYPE /1FB/MD___000006,
      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: </1FB/MD___000006> TYPE /1FB/MD___000006.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/1FB/MD___000006.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /1FB/MD___000006
  INTO TABLE IT_/1FB/MD___000006.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /1FB/MD___000006
*  INTO TABLE @DATA(IT_/1FB/MD___0000062).
*--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_/1FB/MD___000006 INDEX 1 INTO DATA(WA_/1FB/MD___0000062).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/1FB/MD___000006 ASSIGNING </1FB/MD___000006>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</1FB/MD___000006>-MANDT = 1.
</1FB/MD___000006>-HRY_VERSION = 1.
</1FB/MD___000006>-FROMYEAR = 1.
</1FB/MD___000006>-FROMPERIOD = 1.
</1FB/MD___000006>-PARENT_FIELDNAME = 1.

ENDLOOP.

LOOP AT IT_/1FB/MD___000006 INTO WA_/1FB/MD___000006.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/1FB/MD___000006-PARENT_VALUE, sy-vline,
  WA_/1FB/MD___000006-CHILD_FIELDNAME, sy-vline,
  WA_/1FB/MD___000006-CHILD_VALUE, sy-vline,
  WA_/1FB/MD___000006-HRY_STRUCT_SID, sy-vline,
  WA_/1FB/MD___000006-TOYEAR, sy-vline,
  WA_/1FB/MD___000006-TOPERIOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/1FB/MD___000006 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_/1FB/MD___000006 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_/1FB/MD___000006 INTO WA_/1FB/MD___000006.


*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 FYINV, internal->external for field FROMYEAR
CALL FUNCTION 'CONVERSION_EXIT_FYINV_OUTPUT'
  EXPORTING
    input =                      WA_/1FB/MD___000006-FROMYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/1FB/MD___000006-FROMYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FPINV, internal->external for field FROMPERIOD
CALL FUNCTION 'CONVERSION_EXIT_FPINV_OUTPUT'
  EXPORTING
    input =                      WA_/1FB/MD___000006-FROMPERIOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/1FB/MD___000006-FROMPERIOD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TOYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/1FB/MD___000006-TOYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/1FB/MD___000006-TOYEAR.
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_/1FB/MD___000006_STR, 
MANDT TYPE STRING,
HRY_VERSION TYPE STRING,
FROMYEAR TYPE STRING,
FROMPERIOD TYPE STRING,
PARENT_FIELDNAME TYPE STRING,
PARENT_VALUE TYPE STRING,
CHILD_FIELDNAME TYPE STRING,
CHILD_VALUE TYPE STRING,
HRY_STRUCT_SID TYPE STRING,
TOYEAR TYPE STRING,
TOPERIOD TYPE STRING,
SEQNR TYPE STRING,
PARENT_RVSID TYPE STRING,
CHILD_RVSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/1FB/MD___000006_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_/1FB/MD___000006_STR-MANDT sy-vline 
WA_/1FB/MD___000006_STR-HRY_VERSION sy-vline 
WA_/1FB/MD___000006_STR-FROMYEAR sy-vline 
WA_/1FB/MD___000006_STR-FROMPERIOD sy-vline 
WA_/1FB/MD___000006_STR-PARENT_FIELDNAME sy-vline 
WA_/1FB/MD___000006_STR-PARENT_VALUE sy-vline 
WA_/1FB/MD___000006_STR-CHILD_FIELDNAME sy-vline 
WA_/1FB/MD___000006_STR-CHILD_VALUE sy-vline 
WA_/1FB/MD___000006_STR-HRY_STRUCT_SID sy-vline 
WA_/1FB/MD___000006_STR-TOYEAR sy-vline 
WA_/1FB/MD___000006_STR-TOPERIOD sy-vline 
WA_/1FB/MD___000006_STR-SEQNR sy-vline 
WA_/1FB/MD___000006_STR-PARENT_RVSID sy-vline 
WA_/1FB/MD___000006_STR-CHILD_RVSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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