ABAP Select data from SAP table FINS_ACDOC_ITEM_CO_TECH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINS_ACDOC_ITEM_CO_TECH
*  INTO TABLE @DATA(IT_FINS_ACDOC_ITEM_CO_TECH2).
*--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_FINS_ACDOC_ITEM_CO_TECH INDEX 1 INTO DATA(WA_FINS_ACDOC_ITEM_CO_TECH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINS_ACDOC_ITEM_CO_TECH>-CO_BELNR = 1.
<FINS_ACDOC_ITEM_CO_TECH>-CO_BUZEI = 1.
<FINS_ACDOC_ITEM_CO_TECH>-CO_ZLENR = 1.
<FINS_ACDOC_ITEM_CO_TECH>-CO_REFBN = 1.
<FINS_ACDOC_ITEM_CO_TECH>-VRGNG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINS_ACDOC_ITEM_CO_TECH-OBJNR, sy-vline,
  WA_FINS_ACDOC_ITEM_CO_TECH-PAROB1, sy-vline,
  WA_FINS_ACDOC_ITEM_CO_TECH-PAROB, sy-vline,
  WA_FINS_ACDOC_ITEM_CO_TECH-USPOB, sy-vline,
  WA_FINS_ACDOC_ITEM_CO_TECH-CO_SUBKEY, sy-vline,
  WA_FINS_ACDOC_ITEM_CO_TECH-CO_BELKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINS_ACDOC_ITEM_CO_TECH 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_FINS_ACDOC_ITEM_CO_TECH 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_FINS_ACDOC_ITEM_CO_TECH INTO WA_FINS_ACDOC_ITEM_CO_TECH.


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

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

*Conversion exit REFBT, internal->external for field RBEST
CALL FUNCTION 'CONVERSION_EXIT_REFBT_OUTPUT'
  EXPORTING
    input =                      WA_FINS_ACDOC_ITEM_CO_TECH-RBEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_ACDOC_ITEM_CO_TECH-RBEST.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit BEKNZ, internal->external for field CO_BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_FINS_ACDOC_ITEM_CO_TECH-CO_BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_ACDOC_ITEM_CO_TECH-CO_BEKNZ.
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_FINS_ACDOC_ITEM_CO_TECH_STR, 
CO_BELNR TYPE STRING,
CO_BUZEI TYPE STRING,
CO_ZLENR TYPE STRING,
CO_REFBN TYPE STRING,
VRGNG TYPE STRING,
OBJNR TYPE STRING,
PAROB1 TYPE STRING,
PAROB TYPE STRING,
USPOB TYPE STRING,
CO_SUBKEY TYPE STRING,
CO_BELKZ TYPE STRING,
BELTP TYPE STRING,
MUVFLG TYPE STRING,
RBEST TYPE STRING,
LOGSYSO TYPE STRING,
LOGSYSP TYPE STRING,
OBJNR_HK TYPE STRING,
CO_ACCASTY_N1 TYPE STRING,
CO_ACCASTY_N2 TYPE STRING,
CO_ACCASTY_N3 TYPE STRING,
CO_BEKNZ TYPE STRING,
PREC_CO_ZLENR TYPE STRING,
PREC_DRCRK TYPE STRING,
T_CO_BUZEI_MAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINS_ACDOC_ITEM_CO_TECH_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_FINS_ACDOC_ITEM_CO_TECH_STR-CO_BELNR sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_BUZEI sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_ZLENR sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_REFBN sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-VRGNG sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-OBJNR sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-PAROB1 sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-PAROB sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-USPOB sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_SUBKEY sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_BELKZ sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-BELTP sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-MUVFLG sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-RBEST sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-LOGSYSO sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-LOGSYSP sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-OBJNR_HK sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_ACCASTY_N1 sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_ACCASTY_N2 sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_ACCASTY_N3 sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-CO_BEKNZ sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-PREC_CO_ZLENR sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-PREC_DRCRK sy-vline 
WA_FINS_ACDOC_ITEM_CO_TECH_STR-T_CO_BUZEI_MAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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