ABAP Select data from SAP table TN1TC_OU_RESP_OU into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TN1TC_OU_RESP_OU 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 TN1TC_OU_RESP_OU. 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 TN1TC_OU_RESP_OU 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_TN1TC_OU_RESP_OU TYPE STANDARD TABLE OF TN1TC_OU_RESP_OU,
      WA_TN1TC_OU_RESP_OU TYPE TN1TC_OU_RESP_OU,
      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: <TN1TC_OU_RESP_OU> TYPE TN1TC_OU_RESP_OU.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TN1TC_OU_RESP_OU.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TN1TC_OU_RESP_OU
  INTO TABLE IT_TN1TC_OU_RESP_OU.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TN1TC_OU_RESP_OU
*  INTO TABLE @DATA(IT_TN1TC_OU_RESP_OU2).
*--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_TN1TC_OU_RESP_OU INDEX 1 INTO DATA(WA_TN1TC_OU_RESP_OU2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TN1TC_OU_RESP_OU ASSIGNING <TN1TC_OU_RESP_OU>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TN1TC_OU_RESP_OU>-MANDT = 1.
<TN1TC_OU_RESP_OU>-INSTITUTION_ID = 1.
<TN1TC_OU_RESP_OU>-OU_RESP = 1.
<TN1TC_OU_RESP_OU>-DEPTOU = 1.
<TN1TC_OU_RESP_OU>-TREAOU = 1.

ENDLOOP.

LOOP AT IT_TN1TC_OU_RESP_OU INTO WA_TN1TC_OU_RESP_OU.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TN1TC_OU_RESP_OU-DELFLAG, sy-vline,
  WA_TN1TC_OU_RESP_OU-DELDAT, sy-vline,
  WA_TN1TC_OU_RESP_OU-DELUSR, sy-vline,
  WA_TN1TC_OU_RESP_OU-ERDAT, sy-vline,
  WA_TN1TC_OU_RESP_OU-ERUSR, sy-vline,
  WA_TN1TC_OU_RESP_OU-UPDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TN1TC_OU_RESP_OU 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_TN1TC_OU_RESP_OU 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_TN1TC_OU_RESP_OU INTO WA_TN1TC_OU_RESP_OU.


*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 INSTITUTION_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TN1TC_OU_RESP_OU-INSTITUTION_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TN1TC_OU_RESP_OU-INSTITUTION_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEPTOU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TN1TC_OU_RESP_OU-DEPTOU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TN1TC_OU_RESP_OU-DEPTOU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TREAOU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TN1TC_OU_RESP_OU-TREAOU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TN1TC_OU_RESP_OU-TREAOU.
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_TN1TC_OU_RESP_OU_STR, 
MANDT TYPE STRING,
INSTITUTION_ID TYPE STRING,
OU_RESP TYPE STRING,
DEPTOU TYPE STRING,
TREAOU TYPE STRING,
DELFLAG TYPE STRING,
DELDAT TYPE STRING,
DELUSR TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TN1TC_OU_RESP_OU_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_TN1TC_OU_RESP_OU_STR-MANDT sy-vline 
WA_TN1TC_OU_RESP_OU_STR-INSTITUTION_ID sy-vline 
WA_TN1TC_OU_RESP_OU_STR-OU_RESP sy-vline 
WA_TN1TC_OU_RESP_OU_STR-DEPTOU sy-vline 
WA_TN1TC_OU_RESP_OU_STR-TREAOU sy-vline 
WA_TN1TC_OU_RESP_OU_STR-DELFLAG sy-vline 
WA_TN1TC_OU_RESP_OU_STR-DELDAT sy-vline 
WA_TN1TC_OU_RESP_OU_STR-DELUSR sy-vline 
WA_TN1TC_OU_RESP_OU_STR-ERDAT sy-vline 
WA_TN1TC_OU_RESP_OU_STR-ERUSR sy-vline 
WA_TN1TC_OU_RESP_OU_STR-UPDAT sy-vline 
WA_TN1TC_OU_RESP_OU_STR-UPUSR sy-vline      INTO ld_text SEPARATED BY SPACE.

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