ABAP Select data from SAP table VIYCCNTERMS_MTC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIYCCNTERMS_MTC
*  INTO TABLE @DATA(IT_VIYCCNTERMS_MTC2).
*--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_VIYCCNTERMS_MTC INDEX 1 INTO DATA(WA_VIYCCNTERMS_MTC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIYCCNTERMS_MTC>-RECNNR_MTC = 1.
<VIYCCNTERMS_MTC>-REDDENOM = 1.
<VIYCCNTERMS_MTC>-EXPPOOL = 1.
<VIYCCNTERMS_MTC>-PGID = 1.
<VIYCCNTERMS_MTC>-TERMNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIYCCNTERMS_MTC-VALIDFROM, sy-vline,
  WA_VIYCCNTERMS_MTC-VALIDTO, sy-vline,
  WA_VIYCCNTERMS_MTC-RATE, sy-vline,
  WA_VIYCCNTERMS_MTC-FIXEDAMOUNT, sy-vline,
  WA_VIYCCNTERMS_MTC-WAERS, sy-vline,
  WA_VIYCCNTERMS_MTC-PERCENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIYCCNTERMS_MTC 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_VIYCCNTERMS_MTC 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_VIYCCNTERMS_MTC INTO WA_VIYCCNTERMS_MTC.


*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 RECNNR_MTC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIYCCNTERMS_MTC-RECNNR_MTC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIYCCNTERMS_MTC-RECNNR_MTC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIYCCNTERMS_MTC-PGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIYCCNTERMS_MTC-PGID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TERMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIYCCNTERMS_MTC-TERMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIYCCNTERMS_MTC-TERMNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VIYCCNTERMS_MTC-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIYCCNTERMS_MTC-VALIDTO.
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_VIYCCNTERMS_MTC_STR, 
RECNNR_MTC TYPE STRING,
REDDENOM TYPE STRING,
EXPPOOL TYPE STRING,
PGID TYPE STRING,
TERMNO TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
RATE TYPE STRING,
FIXEDAMOUNT TYPE STRING,
WAERS TYPE STRING,
PERCENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIYCCNTERMS_MTC_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_VIYCCNTERMS_MTC_STR-RECNNR_MTC sy-vline 
WA_VIYCCNTERMS_MTC_STR-REDDENOM sy-vline 
WA_VIYCCNTERMS_MTC_STR-EXPPOOL sy-vline 
WA_VIYCCNTERMS_MTC_STR-PGID sy-vline 
WA_VIYCCNTERMS_MTC_STR-TERMNO sy-vline 
WA_VIYCCNTERMS_MTC_STR-VALIDFROM sy-vline 
WA_VIYCCNTERMS_MTC_STR-VALIDTO sy-vline 
WA_VIYCCNTERMS_MTC_STR-RATE sy-vline 
WA_VIYCCNTERMS_MTC_STR-FIXEDAMOUNT sy-vline 
WA_VIYCCNTERMS_MTC_STR-WAERS sy-vline 
WA_VIYCCNTERMS_MTC_STR-PERCENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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