ABAP Select data from SAP table FTR_AC_POSTING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTR_AC_POSTING
*  INTO TABLE @DATA(IT_FTR_AC_POSTING2).
*--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_FTR_AC_POSTING INDEX 1 INTO DATA(WA_FTR_AC_POSTING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTR_AC_POSTING>-MANDT = 1.
<FTR_AC_POSTING>-BUKRS = 1.
<FTR_AC_POSTING>-RFHA = 1.
<FTR_AC_POSTING>-RFHAZU = 1.
<FTR_AC_POSTING>-DCRDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTR_AC_POSTING-TCRTIM, sy-vline,
  WA_FTR_AC_POSTING-RFHAZB, sy-vline,
  WA_FTR_AC_POSTING-AWREF, sy-vline,
  WA_FTR_AC_POSTING-AWORG, sy-vline,
  WA_FTR_AC_POSTING-REVERSAL_AWREF, sy-vline,
  WA_FTR_AC_POSTING-REVERSAL_AWORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FTR_AC_POSTING 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_FTR_AC_POSTING 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_FTR_AC_POSTING INTO WA_FTR_AC_POSTING.


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

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

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

*Conversion exit GJAHR, internal->external for field POSTING_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FTR_AC_POSTING-POSTING_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTR_AC_POSTING-POSTING_YEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field BELNR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FTR_AC_POSTING-BELNR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTR_AC_POSTING-BELNR2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REVERSAL_BELNR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FTR_AC_POSTING-REVERSAL_BELNR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTR_AC_POSTING-REVERSAL_BELNR2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GL_ACCOUNT_C2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FTR_AC_POSTING-GL_ACCOUNT_C2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTR_AC_POSTING-GL_ACCOUNT_C2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GL_ACCOUNT_D2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FTR_AC_POSTING-GL_ACCOUNT_D2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTR_AC_POSTING-GL_ACCOUNT_D2.
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_FTR_AC_POSTING_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
RFHA TYPE STRING,
RFHAZU TYPE STRING,
DCRDAT TYPE STRING,
TCRTIM TYPE STRING,
RFHAZB TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
REVERSAL_AWREF TYPE STRING,
REVERSAL_AWORG TYPE STRING,
POSTING_YEAR TYPE STRING,
POSTING_PERIOD TYPE STRING,
POSTING_DATE TYPE STRING,
DOCUMENT_DATE TYPE STRING,
BLART TYPE STRING,
AA_REF TYPE STRING,
ZUONR TYPE STRING,
DOCUMENT_STATE TYPE STRING,
BELNR TYPE STRING,
REVERSAL_BELNR TYPE STRING,
POSTING_KEY_C TYPE STRING,
GL_ACCOUNT_C TYPE STRING,
POSTING_KEY_D TYPE STRING,
GL_ACCOUNT_D TYPE STRING,
BELNR2 TYPE STRING,
REVERSAL_BELNR2 TYPE STRING,
POSTING_KEY_C2 TYPE STRING,
GL_ACCOUNT_C2 TYPE STRING,
POSTING_KEY_D2 TYPE STRING,
GL_ACCOUNT_D2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTR_AC_POSTING_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_FTR_AC_POSTING_STR-MANDT sy-vline 
WA_FTR_AC_POSTING_STR-BUKRS sy-vline 
WA_FTR_AC_POSTING_STR-RFHA sy-vline 
WA_FTR_AC_POSTING_STR-RFHAZU sy-vline 
WA_FTR_AC_POSTING_STR-DCRDAT sy-vline 
WA_FTR_AC_POSTING_STR-TCRTIM sy-vline 
WA_FTR_AC_POSTING_STR-RFHAZB sy-vline 
WA_FTR_AC_POSTING_STR-AWREF sy-vline 
WA_FTR_AC_POSTING_STR-AWORG sy-vline 
WA_FTR_AC_POSTING_STR-REVERSAL_AWREF sy-vline 
WA_FTR_AC_POSTING_STR-REVERSAL_AWORG sy-vline 
WA_FTR_AC_POSTING_STR-POSTING_YEAR sy-vline 
WA_FTR_AC_POSTING_STR-POSTING_PERIOD sy-vline 
WA_FTR_AC_POSTING_STR-POSTING_DATE sy-vline 
WA_FTR_AC_POSTING_STR-DOCUMENT_DATE sy-vline 
WA_FTR_AC_POSTING_STR-BLART sy-vline 
WA_FTR_AC_POSTING_STR-AA_REF sy-vline 
WA_FTR_AC_POSTING_STR-ZUONR sy-vline 
WA_FTR_AC_POSTING_STR-DOCUMENT_STATE sy-vline 
WA_FTR_AC_POSTING_STR-BELNR sy-vline 
WA_FTR_AC_POSTING_STR-REVERSAL_BELNR sy-vline 
WA_FTR_AC_POSTING_STR-POSTING_KEY_C sy-vline 
WA_FTR_AC_POSTING_STR-GL_ACCOUNT_C sy-vline 
WA_FTR_AC_POSTING_STR-POSTING_KEY_D sy-vline 
WA_FTR_AC_POSTING_STR-GL_ACCOUNT_D sy-vline 
WA_FTR_AC_POSTING_STR-BELNR2 sy-vline 
WA_FTR_AC_POSTING_STR-REVERSAL_BELNR2 sy-vline 
WA_FTR_AC_POSTING_STR-POSTING_KEY_C2 sy-vline 
WA_FTR_AC_POSTING_STR-GL_ACCOUNT_C2 sy-vline 
WA_FTR_AC_POSTING_STR-POSTING_KEY_D2 sy-vline 
WA_FTR_AC_POSTING_STR-GL_ACCOUNT_D2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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