ABAP Select data from SAP table FIES_S_ECSL_TXT_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIES_S_ECSL_TXT_HEADER
*  INTO TABLE @DATA(IT_FIES_S_ECSL_TXT_HEADER2).
*--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_FIES_S_ECSL_TXT_HEADER INDEX 1 INTO DATA(WA_FIES_S_ECSL_TXT_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIES_S_ECSL_TXT_HEADER>-REGISTRATION_TYPE = 1.
<FIES_S_ECSL_TXT_HEADER>-DECLARATION_MODEL = 1.
<FIES_S_ECSL_TXT_HEADER>-FISCAL_YEAR = 1.
<FIES_S_ECSL_TXT_HEADER>-DECLARANT_VAT_NUMBER = 1.
<FIES_S_ECSL_TXT_HEADER>-NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIES_S_ECSL_TXT_HEADER-BLANK_SPACE_1, sy-vline,
  WA_FIES_S_ECSL_TXT_HEADER-CONTACT_PHONE, sy-vline,
  WA_FIES_S_ECSL_TXT_HEADER-CONTACT_NAME, sy-vline,
  WA_FIES_S_ECSL_TXT_HEADER-DECLARATION_ID, sy-vline,
  WA_FIES_S_ECSL_TXT_HEADER-SUPPLEMENTARY, sy-vline,
  WA_FIES_S_ECSL_TXT_HEADER-SUBSTITUTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIES_S_ECSL_TXT_HEADER 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_FIES_S_ECSL_TXT_HEADER 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_FIES_S_ECSL_TXT_HEADER INTO WA_FIES_S_ECSL_TXT_HEADER.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FIES_S_ECSL_TXT_HEADER_STR, 
REGISTRATION_TYPE TYPE STRING,
DECLARATION_MODEL TYPE STRING,
FISCAL_YEAR TYPE STRING,
DECLARANT_VAT_NUMBER TYPE STRING,
NAME TYPE STRING,
BLANK_SPACE_1 TYPE STRING,
CONTACT_PHONE TYPE STRING,
CONTACT_NAME TYPE STRING,
DECLARATION_ID TYPE STRING,
SUPPLEMENTARY TYPE STRING,
SUBSTITUTE TYPE STRING,
PREVIOUS_DECLARATION_ID TYPE STRING,
PERIOD TYPE STRING,
BUSINESS_PARTNERS_COUNT TYPE STRING,
BUSINESS_PARTNERS_TOTAL TYPE STRING,
CORRECTIONS_COUNT TYPE STRING,
CORRECTIONS_TOTAL TYPE STRING,
PERIOD_INTERVAL TYPE STRING,
BLANK_SPACE_2 TYPE STRING,
REPRESENTATIVE_VAT_NUMBER TYPE STRING,
BLANK_SPACE_3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIES_S_ECSL_TXT_HEADER_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_FIES_S_ECSL_TXT_HEADER_STR-REGISTRATION_TYPE sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-DECLARATION_MODEL sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-FISCAL_YEAR sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-DECLARANT_VAT_NUMBER sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-NAME sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-BLANK_SPACE_1 sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-CONTACT_PHONE sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-CONTACT_NAME sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-DECLARATION_ID sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-SUPPLEMENTARY sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-SUBSTITUTE sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-PREVIOUS_DECLARATION_ID sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-PERIOD sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-BUSINESS_PARTNERS_COUNT sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-BUSINESS_PARTNERS_TOTAL sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-CORRECTIONS_COUNT sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-CORRECTIONS_TOTAL sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-PERIOD_INTERVAL sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-BLANK_SPACE_2 sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-REPRESENTATIVE_VAT_NUMBER sy-vline 
WA_FIES_S_ECSL_TXT_HEADER_STR-BLANK_SPACE_3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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