ABAP Select data from SAP table T7COT2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7COT2 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 T7COT2. 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 T7COT2 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_T7COT2 TYPE STANDARD TABLE OF T7COT2,
      WA_T7COT2 TYPE T7COT2,
      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: <T7COT2> TYPE T7COT2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7COT2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7COT2
  INTO TABLE IT_T7COT2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7COT2
*  INTO TABLE @DATA(IT_T7COT22).
*--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_T7COT2 INDEX 1 INTO DATA(WA_T7COT22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7COT2 ASSIGNING <T7COT2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7COT2>-MANDT = 1.
<T7COT2>-PERNR = 1.
<T7COT2>-SEQNO = 1.
<T7COT2>-SEQN2 = 1.
<T7COT2>-APZNR = 1.

ENDLOOP.

LOOP AT IT_T7COT2 INTO WA_T7COT2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7COT2-RETYP, sy-vline,
  WA_T7COT2-SRTZA, sy-vline,
  WA_T7COT2-INMNS, sy-vline,
  WA_T7COT2-INPER, sy-vline,
  WA_T7COT2-FPMNS, sy-vline,
  WA_T7COT2-FPPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7COT2 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_T7COT2 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_T7COT2 INTO WA_T7COT2.


*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 ENTIT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T7COT2-ENTIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T7COT2-ENTIT.
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_T7COT2_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
SEQNO TYPE STRING,
SEQN2 TYPE STRING,
APZNR TYPE STRING,
RETYP TYPE STRING,
SRTZA TYPE STRING,
INMNS TYPE STRING,
INPER TYPE STRING,
FPMNS TYPE STRING,
FPPER TYPE STRING,
BUKRS TYPE STRING,
ENTIT TYPE STRING,
BRANC TYPE STRING,
IDAPO TYPE STRING,
TYPEN TYPE STRING,
CENTR TYPE STRING,
DYSWO TYPE STRING,
ICTYP TYPE STRING,
ICNUM TYPE STRING,
NVING TYPE STRING,
NVRET TYPE STRING,
NVTDA TYPE STRING,
NVTAA TYPE STRING,
NVVSP TYPE STRING,
NVVTE TYPE STRING,
NVVST TYPE STRING,
NVSLN TYPE STRING,
NVIGE TYPE STRING,
NVLMA TYPE STRING,
NVVAC TYPE STRING,
NVAVP TYPE STRING,
NVVCT TYPE STRING,
NVIRP TYPE STRING,
ENTIN TYPE STRING,
PERCB TYPE STRING,
PERCP TYPE STRING,
BTSUE TYPE STRING,
BTIBC TYPE STRING,
BTAVB TYPE STRING,
BTAVP TYPE STRING,
BTFSB TYPE STRING,
BTFSP TYPE STRING,
BTVNR TYPE STRING,
BTUPC TYPE STRING,
BTBUK TYPE STRING,
BTPER TYPE STRING,
BTVAP TYPE STRING,
BTVAF TYPE STRING,
WAERS TYPE STRING,
TYPCO TYPE STRING,
SUBCO TYPE STRING,
ENOAC TYPE STRING,
COREX TYPE STRING,
BLAND TYPE STRING,
CITYC TYPE STRING,
BTFSS TYPE STRING,
BTSUB TYPE STRING,
SAINT TYPE STRING,
NVSUS TYPE STRING,
BTASB TYPE STRING,
ECREE TYPE STRING,
PAYPF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7COT2_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_T7COT2_STR-MANDT sy-vline 
WA_T7COT2_STR-PERNR sy-vline 
WA_T7COT2_STR-SEQNO sy-vline 
WA_T7COT2_STR-SEQN2 sy-vline 
WA_T7COT2_STR-APZNR sy-vline 
WA_T7COT2_STR-RETYP sy-vline 
WA_T7COT2_STR-SRTZA sy-vline 
WA_T7COT2_STR-INMNS sy-vline 
WA_T7COT2_STR-INPER sy-vline 
WA_T7COT2_STR-FPMNS sy-vline 
WA_T7COT2_STR-FPPER sy-vline 
WA_T7COT2_STR-BUKRS sy-vline 
WA_T7COT2_STR-ENTIT sy-vline 
WA_T7COT2_STR-BRANC sy-vline 
WA_T7COT2_STR-IDAPO sy-vline 
WA_T7COT2_STR-TYPEN sy-vline 
WA_T7COT2_STR-CENTR sy-vline 
WA_T7COT2_STR-DYSWO sy-vline 
WA_T7COT2_STR-ICTYP sy-vline 
WA_T7COT2_STR-ICNUM sy-vline 
WA_T7COT2_STR-NVING sy-vline 
WA_T7COT2_STR-NVRET sy-vline 
WA_T7COT2_STR-NVTDA sy-vline 
WA_T7COT2_STR-NVTAA sy-vline 
WA_T7COT2_STR-NVVSP sy-vline 
WA_T7COT2_STR-NVVTE sy-vline 
WA_T7COT2_STR-NVVST sy-vline 
WA_T7COT2_STR-NVSLN sy-vline 
WA_T7COT2_STR-NVIGE sy-vline 
WA_T7COT2_STR-NVLMA sy-vline 
WA_T7COT2_STR-NVVAC sy-vline 
WA_T7COT2_STR-NVAVP sy-vline 
WA_T7COT2_STR-NVVCT sy-vline 
WA_T7COT2_STR-NVIRP sy-vline 
WA_T7COT2_STR-ENTIN sy-vline 
WA_T7COT2_STR-PERCB sy-vline 
WA_T7COT2_STR-PERCP sy-vline 
WA_T7COT2_STR-BTSUE sy-vline 
WA_T7COT2_STR-BTIBC sy-vline 
WA_T7COT2_STR-BTAVB sy-vline 
WA_T7COT2_STR-BTAVP sy-vline 
WA_T7COT2_STR-BTFSB sy-vline 
WA_T7COT2_STR-BTFSP sy-vline 
WA_T7COT2_STR-BTVNR sy-vline 
WA_T7COT2_STR-BTUPC sy-vline 
WA_T7COT2_STR-BTBUK sy-vline 
WA_T7COT2_STR-BTPER sy-vline 
WA_T7COT2_STR-BTVAP sy-vline 
WA_T7COT2_STR-BTVAF sy-vline 
WA_T7COT2_STR-WAERS sy-vline 
WA_T7COT2_STR-TYPCO sy-vline 
WA_T7COT2_STR-SUBCO sy-vline 
WA_T7COT2_STR-ENOAC sy-vline 
WA_T7COT2_STR-COREX sy-vline 
WA_T7COT2_STR-BLAND sy-vline 
WA_T7COT2_STR-CITYC sy-vline 
WA_T7COT2_STR-BTFSS sy-vline 
WA_T7COT2_STR-BTSUB sy-vline 
WA_T7COT2_STR-SAINT sy-vline 
WA_T7COT2_STR-NVSUS sy-vline 
WA_T7COT2_STR-BTASB sy-vline 
WA_T7COT2_STR-ECREE sy-vline 
WA_T7COT2_STR-PAYPF sy-vline      INTO ld_text SEPARATED BY SPACE.

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