ABAP Select data from SAP table TF661 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TF661 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 TF661. 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 TF661 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_TF661 TYPE STANDARD TABLE OF TF661,
      WA_TF661 TYPE TF661,
      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: <TF661> TYPE TF661.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TF661.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TF661
  INTO TABLE IT_TF661.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TF661
*  INTO TABLE @DATA(IT_TF6612).
*--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_TF661 INDEX 1 INTO DATA(WA_TF6612).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TF661 ASSIGNING <TF661>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TF661>-MANDT = 1.
<TF661>-DIMEN = 1.
<TF661>-RLDNR = 1.
<TF661>-ITCLG = 1.
<TF661>-ASSVS = 1.

ENDLOOP.

LOOP AT IT_TF661 INTO WA_TF661.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TF661-COICU, sy-vline,
  WA_TF661-RYEAR, sy-vline,
  WA_TF661-PERID, sy-vline,
  WA_TF661-BUNIT, sy-vline,
  WA_TF661-DTEQI, sy-vline,
  WA_TF661-SVALU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TF661 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_TF661 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_TF661 INTO WA_TF661.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TF661-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ASSVS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TF661-ASSVS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-ASSVS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field COICU
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_TF661-COICU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-COICU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TF661-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field BUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_TF661-BUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-BUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field BKVLC
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_TF661-BKVLC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-BKVLC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field BKVRC
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_TF661-BKVRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-BKVRC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field CRATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TF661-CRATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF661-CRATE.
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_TF661_STR, 
MANDT TYPE STRING,
DIMEN TYPE STRING,
RLDNR TYPE STRING,
ITCLG TYPE STRING,
ASSVS TYPE STRING,
COICU TYPE STRING,
RYEAR TYPE STRING,
PERID TYPE STRING,
BUNIT TYPE STRING,
DTEQI TYPE STRING,
SVALU TYPE STRING,
BKVLC TYPE STRING,
BKVRC TYPE STRING,
CTYPE TYPE STRING,
CRATE TYPE STRING,
FFACT TYPE STRING,
TFACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TF661_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_TF661_STR-MANDT sy-vline 
WA_TF661_STR-DIMEN sy-vline 
WA_TF661_STR-RLDNR sy-vline 
WA_TF661_STR-ITCLG sy-vline 
WA_TF661_STR-ASSVS sy-vline 
WA_TF661_STR-COICU sy-vline 
WA_TF661_STR-RYEAR sy-vline 
WA_TF661_STR-PERID sy-vline 
WA_TF661_STR-BUNIT sy-vline 
WA_TF661_STR-DTEQI sy-vline 
WA_TF661_STR-SVALU sy-vline 
WA_TF661_STR-BKVLC sy-vline 
WA_TF661_STR-BKVRC sy-vline 
WA_TF661_STR-CTYPE sy-vline 
WA_TF661_STR-CRATE sy-vline 
WA_TF661_STR-FFACT sy-vline 
WA_TF661_STR-TFACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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