ABAP Select data from SAP table TMC2KS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP TMC2KS 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 TMC2KS. 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 TMC2KS 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_TMC2KS TYPE STANDARD TABLE OF TMC2KS,
      WA_TMC2KS TYPE TMC2KS,
      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: <TMC2KS> TYPE TMC2KS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TMC2KS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TMC2KS
  INTO TABLE IT_TMC2KS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TMC2KS
*  INTO TABLE @DATA(IT_TMC2KS2).
*--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_TMC2KS INDEX 1 INTO DATA(WA_TMC2KS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TMC2KS ASSIGNING <TMC2KS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TMC2KS>-MANDT = 1.
<TMC2KS>-MCINF = 1.
<TMC2KS>-STAFO = 1.
<TMC2KS>-SFONR = 1.
<TMC2KS>-LFNR2 = 1.

ENDLOOP.

LOOP AT IT_TMC2KS INTO WA_TMC2KS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TMC2KS-STFNA, sy-vline,
  WA_TMC2KS-QUTAB, sy-vline,
  WA_TMC2KS-QUFNA, sy-vline,
  WA_TMC2KS-SFBED, sy-vline,
  WA_TMC2KS-SQTAB, sy-vline,
  WA_TMC2KS-SQFNA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TMC2KS 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_TMC2KS 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_TMC2KS INTO WA_TMC2KS.


*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 ALPHA, internal->external for field STAFO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TMC2KS-STAFO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TMC2KS-STAFO.
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_TMC2KS_STR, 
MANDT TYPE STRING,
MCINF TYPE STRING,
STAFO TYPE STRING,
SFONR TYPE STRING,
LFNR2 TYPE STRING,
STFNA TYPE STRING,
QUTAB TYPE STRING,
QUFNA TYPE STRING,
SFBED TYPE STRING,
SQTAB TYPE STRING,
SQFNA TYPE STRING,
QFOFS TYPE STRING,
QFLEN TYPE STRING,
SFINI TYPE STRING,
REFOR TYPE STRING,
SUHIE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TMC2KS_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_TMC2KS_STR-MANDT sy-vline 
WA_TMC2KS_STR-MCINF sy-vline 
WA_TMC2KS_STR-STAFO sy-vline 
WA_TMC2KS_STR-SFONR sy-vline 
WA_TMC2KS_STR-LFNR2 sy-vline 
WA_TMC2KS_STR-STFNA sy-vline 
WA_TMC2KS_STR-QUTAB sy-vline 
WA_TMC2KS_STR-QUFNA sy-vline 
WA_TMC2KS_STR-SFBED sy-vline 
WA_TMC2KS_STR-SQTAB sy-vline 
WA_TMC2KS_STR-SQFNA sy-vline 
WA_TMC2KS_STR-QFOFS sy-vline 
WA_TMC2KS_STR-QFLEN sy-vline 
WA_TMC2KS_STR-SFINI sy-vline 
WA_TMC2KS_STR-REFOR sy-vline 
WA_TMC2KS_STR-SUHIE sy-vline      INTO ld_text SEPARATED BY SPACE.

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