ABAP Select data from SAP table FOT_S_EXTAX_ITEM_IN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FOT_S_EXTAX_ITEM_IN
*  INTO TABLE @DATA(IT_FOT_S_EXTAX_ITEM_IN2).
*--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_FOT_S_EXTAX_ITEM_IN INDEX 1 INTO DATA(WA_FOT_S_EXTAX_ITEM_IN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FOT_S_EXTAX_ITEM_IN>-POS_NO = 1.
<FOT_S_EXTAX_ITEM_IN>-GROUP_ID = 1.
<FOT_S_EXTAX_ITEM_IN>-COUNTRY = 1.
<FOT_S_EXTAX_ITEM_IN>-DIVISION = 1.
<FOT_S_EXTAX_ITEM_IN>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FOT_S_EXTAX_ITEM_IN-PROD_CODE, sy-vline,
  WA_FOT_S_EXTAX_ITEM_IN-GROUP_PROD_CODE, sy-vline,
  WA_FOT_S_EXTAX_ITEM_IN-QUANTITY, sy-vline,
  WA_FOT_S_EXTAX_ITEM_IN-UNIT, sy-vline,
  WA_FOT_S_EXTAX_ITEM_IN-UPMAT, sy-vline,
  WA_FOT_S_EXTAX_ITEM_IN-APAR_IND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FOT_S_EXTAX_ITEM_IN 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_FOT_S_EXTAX_ITEM_IN 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_FOT_S_EXTAX_ITEM_IN INTO WA_FOT_S_EXTAX_ITEM_IN.


*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 CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FOT_S_EXTAX_ITEM_IN-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FOT_S_EXTAX_ITEM_IN-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UPMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FOT_S_EXTAX_ITEM_IN-UPMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FOT_S_EXTAX_ITEM_IN-UPMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FOT_S_EXTAX_ITEM_IN-AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FOT_S_EXTAX_ITEM_IN-AMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field GROSS_AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FOT_S_EXTAX_ITEM_IN-GROSS_AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FOT_S_EXTAX_ITEM_IN-GROSS_AMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field FREIGHT_AM
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FOT_S_EXTAX_ITEM_IN-FREIGHT_AM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FOT_S_EXTAX_ITEM_IN-FREIGHT_AM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field EXEMPT_AMT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FOT_S_EXTAX_ITEM_IN-EXEMPT_AMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FOT_S_EXTAX_ITEM_IN-EXEMPT_AMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCNT_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FOT_S_EXTAX_ITEM_IN-ACCNT_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FOT_S_EXTAX_ITEM_IN-ACCNT_NO.
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_FOT_S_EXTAX_ITEM_IN_STR, 
POS_NO TYPE STRING,
GROUP_ID TYPE STRING,
COUNTRY TYPE STRING,
DIVISION TYPE STRING,
MATNR TYPE STRING,
PROD_CODE TYPE STRING,
GROUP_PROD_CODE TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
UPMAT TYPE STRING,
APAR_IND TYPE STRING,
TAX_TYPE TYPE STRING,
EXEMP_IND TYPE STRING,
TAX_DATE TYPE STRING,
TXJCD_ST TYPE STRING,
TXJCD_SF TYPE STRING,
TXJCD_POA TYPE STRING,
TXJCD_POO TYPE STRING,
AMOUNT TYPE STRING,
GROSS_AMOUNT TYPE STRING,
FREIGHT_AM TYPE STRING,
EXEMPT_AMT TYPE STRING,
ACCNT_NO TYPE STRING,
ACCNT_CLS TYPE STRING,
COST_OBJECT TYPE STRING,
PTP_IND TYPE STRING,
EXCERTIF TYPE STRING,
EXREASON TYPE STRING,
USER_DATA TYPE STRING,
STORE_CODE TYPE STRING,
USER_REPT_DATA TYPE STRING,
PROJECT_ID TYPE STRING,
MATKL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FOT_S_EXTAX_ITEM_IN_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_FOT_S_EXTAX_ITEM_IN_STR-POS_NO sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-GROUP_ID sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-COUNTRY sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-DIVISION sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-MATNR sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-PROD_CODE sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-GROUP_PROD_CODE sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-QUANTITY sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-UNIT sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-UPMAT sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-APAR_IND sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-TAX_TYPE sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-EXEMP_IND sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-TAX_DATE sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-TXJCD_ST sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-TXJCD_SF sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-TXJCD_POA sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-TXJCD_POO sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-AMOUNT sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-GROSS_AMOUNT sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-FREIGHT_AM sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-EXEMPT_AMT sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-ACCNT_NO sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-ACCNT_CLS sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-COST_OBJECT sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-PTP_IND sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-EXCERTIF sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-EXREASON sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-USER_DATA sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-STORE_CODE sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-USER_REPT_DATA sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-PROJECT_ID sy-vline 
WA_FOT_S_EXTAX_ITEM_IN_STR-MATKL sy-vline      INTO ld_text SEPARATED BY SPACE.

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