ABAP Select data from SAP table FAAC_ACLS1A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FAAC_ACLS1A 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 FAAC_ACLS1A. 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 FAAC_ACLS1A 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_FAAC_ACLS1A TYPE STANDARD TABLE OF FAAC_ACLS1A,
      WA_FAAC_ACLS1A TYPE FAAC_ACLS1A,
      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: <FAAC_ACLS1A> TYPE FAAC_ACLS1A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FAAC_ACLS1A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FAAC_ACLS1A
  INTO TABLE IT_FAAC_ACLS1A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FAAC_ACLS1A
*  INTO TABLE @DATA(IT_FAAC_ACLS1A2).
*--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_FAAC_ACLS1A INDEX 1 INTO DATA(WA_FAAC_ACLS1A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FAAC_ACLS1A ASSIGNING <FAAC_ACLS1A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FAAC_ACLS1A>-CLIENT = 1.
<FAAC_ACLS1A>-ASSET_CLASS = 1.
<FAAC_ACLS1A>-ACC_PRINCIPLE = 1.
<FAAC_ACLS1A>-VALVIEW = 1.
<FAAC_ACLS1A>-VALID_TO_DATE = 1.

ENDLOOP.

LOOP AT IT_FAAC_ACLS1A INTO WA_FAAC_ACLS1A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FAAC_ACLS1A-VALID_FROM_DATE, sy-vline,
  WA_FAAC_ACLS1A-DEPR_KEY, sy-vline,
  WA_FAAC_ACLS1A-USEFUL_LIFE_YEARS, sy-vline,
  WA_FAAC_ACLS1A-USEFUL_LIFE_PERIODS, sy-vline,
  WA_FAAC_ACLS1A-SCREEN_LAYOUT, sy-vline,
  WA_FAAC_ACLS1A-NEGATIVE_VALUES_ALLOWED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FAAC_ACLS1A 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_FAAC_ACLS1A 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_FAAC_ACLS1A INTO WA_FAAC_ACLS1A.


*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 ASSET_CLASS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAAC_ACLS1A-ASSET_CLASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAAC_ACLS1A-ASSET_CLASS.
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_FAAC_ACLS1A_STR, 
CLIENT TYPE STRING,
ASSET_CLASS TYPE STRING,
ACC_PRINCIPLE TYPE STRING,
VALVIEW TYPE STRING,
VALID_TO_DATE TYPE STRING,
VALID_FROM_DATE TYPE STRING,
DEPR_KEY TYPE STRING,
USEFUL_LIFE_YEARS TYPE STRING,
USEFUL_LIFE_PERIODS TYPE STRING,
SCREEN_LAYOUT TYPE STRING,
NEGATIVE_VALUES_ALLOWED TYPE STRING,
INDEX_REPL_VALUES TYPE STRING,
INDEX_REPL_AGE TYPE STRING,
CHECK_LVA_AMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FAAC_ACLS1A_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_FAAC_ACLS1A_STR-CLIENT sy-vline 
WA_FAAC_ACLS1A_STR-ASSET_CLASS sy-vline 
WA_FAAC_ACLS1A_STR-ACC_PRINCIPLE sy-vline 
WA_FAAC_ACLS1A_STR-VALVIEW sy-vline 
WA_FAAC_ACLS1A_STR-VALID_TO_DATE sy-vline 
WA_FAAC_ACLS1A_STR-VALID_FROM_DATE sy-vline 
WA_FAAC_ACLS1A_STR-DEPR_KEY sy-vline 
WA_FAAC_ACLS1A_STR-USEFUL_LIFE_YEARS sy-vline 
WA_FAAC_ACLS1A_STR-USEFUL_LIFE_PERIODS sy-vline 
WA_FAAC_ACLS1A_STR-SCREEN_LAYOUT sy-vline 
WA_FAAC_ACLS1A_STR-NEGATIVE_VALUES_ALLOWED sy-vline 
WA_FAAC_ACLS1A_STR-INDEX_REPL_VALUES sy-vline 
WA_FAAC_ACLS1A_STR-INDEX_REPL_AGE sy-vline 
WA_FAAC_ACLS1A_STR-CHECK_LVA_AMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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