ABAP Select data from SAP table FIGSTIN_S_B2B_B2CL_INV_HDR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FIGSTIN_S_B2B_B2CL_INV_HDR 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 FIGSTIN_S_B2B_B2CL_INV_HDR. 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 FIGSTIN_S_B2B_B2CL_INV_HDR 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_FIGSTIN_S_B2B_B2CL_INV_HDR TYPE STANDARD TABLE OF FIGSTIN_S_B2B_B2CL_INV_HDR,
      WA_FIGSTIN_S_B2B_B2CL_INV_HDR TYPE FIGSTIN_S_B2B_B2CL_INV_HDR,
      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: <FIGSTIN_S_B2B_B2CL_INV_HDR> TYPE FIGSTIN_S_B2B_B2CL_INV_HDR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FIGSTIN_S_B2B_B2CL_INV_HDR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FIGSTIN_S_B2B_B2CL_INV_HDR
  INTO TABLE IT_FIGSTIN_S_B2B_B2CL_INV_HDR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIGSTIN_S_B2B_B2CL_INV_HDR
*  INTO TABLE @DATA(IT_FIGSTIN_S_B2B_B2CL_INV_HDR2).
*--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_FIGSTIN_S_B2B_B2CL_INV_HDR INDEX 1 INTO DATA(WA_FIGSTIN_S_B2B_B2CL_INV_HDR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FIGSTIN_S_B2B_B2CL_INV_HDR ASSIGNING <FIGSTIN_S_B2B_B2CL_INV_HDR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIGSTIN_S_B2B_B2CL_INV_HDR>-CTIN = 1.
<FIGSTIN_S_B2B_B2CL_INV_HDR>-INUM = 1.
<FIGSTIN_S_B2B_B2CL_INV_HDR>-IDT = 1.
<FIGSTIN_S_B2B_B2CL_INV_HDR>-VAL = 1.
<FIGSTIN_S_B2B_B2CL_INV_HDR>-POS = 1.

ENDLOOP.

LOOP AT IT_FIGSTIN_S_B2B_B2CL_INV_HDR INTO WA_FIGSTIN_S_B2B_B2CL_INV_HDR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIGSTIN_S_B2B_B2CL_INV_HDR-RCHRG, sy-vline,
  WA_FIGSTIN_S_B2B_B2CL_INV_HDR-ETIN, sy-vline,
  WA_FIGSTIN_S_B2B_B2CL_INV_HDR-INV_TYP, sy-vline,
  WA_FIGSTIN_S_B2B_B2CL_INV_HDR-DIFF_PERCENT, sy-vline,
  WA_FIGSTIN_S_B2B_B2CL_INV_HDR-FLAG, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FIGSTIN_S_B2B_B2CL_INV_HDR 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_FIGSTIN_S_B2B_B2CL_INV_HDR 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_FIGSTIN_S_B2B_B2CL_INV_HDR INTO WA_FIGSTIN_S_B2B_B2CL_INV_HDR.


*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 AU132, internal->external for field VAL
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FIGSTIN_S_B2B_B2CL_INV_HDR-VAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIGSTIN_S_B2B_B2CL_INV_HDR-VAL.
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_FIGSTIN_S_B2B_B2CL_INV_HDR_STR, 
CTIN TYPE STRING,
INUM TYPE STRING,
IDT TYPE STRING,
VAL TYPE STRING,
POS TYPE STRING,
RCHRG TYPE STRING,
ETIN TYPE STRING,
INV_TYP TYPE STRING,
DIFF_PERCENT TYPE STRING,
FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIGSTIN_S_B2B_B2CL_INV_HDR_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_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-CTIN sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-INUM sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-IDT sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-VAL sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-POS sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-RCHRG sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-ETIN sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-INV_TYP sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-DIFF_PERCENT sy-vline 
WA_FIGSTIN_S_B2B_B2CL_INV_HDR_STR-FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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