ABAP Select data from SAP table /CEECV/BGFI_VAT_SELSCREEN_SPEC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /CEECV/BGFI_VAT_SELSCREEN_SPEC 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 /CEECV/BGFI_VAT_SELSCREEN_SPEC. 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 /CEECV/BGFI_VAT_SELSCREEN_SPEC 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_/CEECV/BGFI_VAT_SELSCREEN_SPEC TYPE STANDARD TABLE OF /CEECV/BGFI_VAT_SELSCREEN_SPEC,
      WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC TYPE /CEECV/BGFI_VAT_SELSCREEN_SPEC,
      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: </CEECV/BGFI_VAT_SELSCREEN_SPEC> TYPE /CEECV/BGFI_VAT_SELSCREEN_SPEC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /CEECV/BGFI_VAT_SELSCREEN_SPEC
  INTO TABLE IT_/CEECV/BGFI_VAT_SELSCREEN_SPEC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CEECV/BGFI_VAT_SELSCREEN_SPEC
*  INTO TABLE @DATA(IT_/CEECV/BGFI_VAT_SELSCREEN_SPEC2).
*--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_/CEECV/BGFI_VAT_SELSCREEN_SPEC INDEX 1 INTO DATA(WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/CEECV/BGFI_VAT_SELSCREEN_SPEC ASSIGNING </CEECV/BGFI_VAT_SELSCREEN_SPEC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CEECV/BGFI_VAT_SELSCREEN_SPEC>-PA_ZSDFI = 1.
</CEECV/BGFI_VAT_SELSCREEN_SPEC>-PA_ZSD = 1.
</CEECV/BGFI_VAT_SELSCREEN_SPEC>-PA_ZMMFI = 1.
</CEECV/BGFI_VAT_SELSCREEN_SPEC>-PA_PARVW = 1.
</CEECV/BGFI_VAT_SELSCREEN_SPEC>-PCELL70 = 1.

ENDLOOP.

LOOP AT IT_/CEECV/BGFI_VAT_SELSCREEN_SPEC INTO WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL71, sy-vline,
  WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL80, sy-vline,
  WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL81, sy-vline,
  WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL82, sy-vline,
  WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL33, sy-vline,
  WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PAR_DLAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC 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_/CEECV/BGFI_VAT_SELSCREEN_SPEC 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_/CEECV/BGFI_VAT_SELSCREEN_SPEC INTO WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC.


*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 PARVW, internal->external for field PA_PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PA_PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PA_PARVW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PCELL70
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL70
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL70.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PCELL71
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL71
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL71.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PCELL80
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL80
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL80.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PCELL81
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL81
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL81.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PCELL82
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL82
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC-PCELL82.
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_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR, 
PA_ZSDFI TYPE STRING,
PA_ZSD TYPE STRING,
PA_ZMMFI TYPE STRING,
PA_PARVW TYPE STRING,
PCELL70 TYPE STRING,
PCELL71 TYPE STRING,
PCELL80 TYPE STRING,
PCELL81 TYPE STRING,
PCELL82 TYPE STRING,
PCELL33 TYPE STRING,
PAR_DLAY TYPE STRING,
PAR_SLAY TYPE STRING,
PAR_PLAY TYPE STRING,
PA_PDF TYPE STRING,
PA_SFP TYPE STRING,
PA_GEN TYPE STRING,
PA_PC TYPE STRING,
PA_AS TYPE STRING,
PA_PFILE TYPE STRING,
PA_SFILE TYPE STRING,
PA_DFILE TYPE STRING,
PA_SBTAX TYPE STRING,
PA_SSHRT TYPE STRING,
PA_NODT TYPE STRING,
PA_VERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_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_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_ZSDFI sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_ZSD sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_ZMMFI sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_PARVW sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PCELL70 sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PCELL71 sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PCELL80 sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PCELL81 sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PCELL82 sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PCELL33 sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PAR_DLAY sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PAR_SLAY sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PAR_PLAY sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_PDF sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_SFP sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_GEN sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_PC sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_AS sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_PFILE sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_SFILE sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_DFILE sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_SBTAX sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_SSHRT sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_NODT sy-vline 
WA_/CEECV/BGFI_VAT_SELSCREEN_SPEC_STR-PA_VERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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