ABAP Select data from SAP table T865 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T865 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 T865. 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 T865 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_T865 TYPE STANDARD TABLE OF T865,
      WA_T865 TYPE T865,
      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: <T865> TYPE T865.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T865.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T865
  INTO TABLE IT_T865.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T865
*  INTO TABLE @DATA(IT_T8652).
*--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_T865 INDEX 1 INTO DATA(WA_T8652).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T865 ASSIGNING <T865>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T865>-MANDT = 1.
<T865>-RYEAR = 1.
<T865>-PERID = 1.
<T865>-RVERS = 1.
<T865>-ELGRP = 1.

ENDLOOP.

LOOP AT IT_T865 INTO WA_T865.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T865-CDIFD, sy-vline,
  WA_T865-CDIFC, sy-vline,
  WA_T865-ODIFD, sy-vline,
  WA_T865-ODIFC, sy-vline,
  WA_T865-DOCTY, sy-vline,
  WA_T865-CUTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T865 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_T865 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_T865 INTO WA_T865.


*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 INVGJ, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_INVGJ_OUTPUT'
  EXPORTING
    input =                      WA_T865-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IVPER, internal->external for field PERID
CALL FUNCTION 'CONVERSION_EXIT_IVPER_OUTPUT'
  EXPORTING
    input =                      WA_T865-PERID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-PERID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T865-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDIFD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T865-CDIFD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-CDIFD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDIFC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T865-CDIFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-CDIFC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ODIFD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T865-ODIFD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-ODIFD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ODIFC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T865-ODIFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-ODIFC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T865-DOCTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T865-DOCTY.
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_T865_STR, 
MANDT TYPE STRING,
RYEAR TYPE STRING,
PERID TYPE STRING,
RVERS TYPE STRING,
ELGRP TYPE STRING,
CDIFD TYPE STRING,
CDIFC TYPE STRING,
ODIFD TYPE STRING,
ODIFC TYPE STRING,
DOCTY TYPE STRING,
CUTYP TYPE STRING,
CUCME TYPE STRING,
WAESP TYPE STRING,
RMVCT TYPE STRING,
EINSE TYPE STRING,
NOQUO TYPE STRING,
ZFLD1 TYPE STRING,
ZFLD2 TYPE STRING,
OSPOS TYPE STRING,
CMVTD TYPE STRING,
CMVTC TYPE STRING,
OMVTD TYPE STRING,
OMVTC TYPE STRING,
RMVCTSET TYPE STRING,
ADFLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T865_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_T865_STR-MANDT sy-vline 
WA_T865_STR-RYEAR sy-vline 
WA_T865_STR-PERID sy-vline 
WA_T865_STR-RVERS sy-vline 
WA_T865_STR-ELGRP sy-vline 
WA_T865_STR-CDIFD sy-vline 
WA_T865_STR-CDIFC sy-vline 
WA_T865_STR-ODIFD sy-vline 
WA_T865_STR-ODIFC sy-vline 
WA_T865_STR-DOCTY sy-vline 
WA_T865_STR-CUTYP sy-vline 
WA_T865_STR-CUCME sy-vline 
WA_T865_STR-WAESP sy-vline 
WA_T865_STR-RMVCT sy-vline 
WA_T865_STR-EINSE sy-vline 
WA_T865_STR-NOQUO sy-vline 
WA_T865_STR-ZFLD1 sy-vline 
WA_T865_STR-ZFLD2 sy-vline 
WA_T865_STR-OSPOS sy-vline 
WA_T865_STR-CMVTD sy-vline 
WA_T865_STR-CMVTC sy-vline 
WA_T865_STR-OMVTD sy-vline 
WA_T865_STR-OMVTC sy-vline 
WA_T865_STR-RMVCTSET sy-vline 
WA_T865_STR-ADFLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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