ABAP Select data from SAP table RDSV_DS_FICA_LG into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDSV_DS_FICA_LG
*  INTO TABLE @DATA(IT_RDSV_DS_FICA_LG2).
*--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_RDSV_DS_FICA_LG INDEX 1 INTO DATA(WA_RDSV_DS_FICA_LG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDSV_DS_FICA_LG>-MANDT = 1.
<RDSV_DS_FICA_LG>-EXKEY = 1.
<RDSV_DS_FICA_LG>-EXKID = 1.
<RDSV_DS_FICA_LG>-OPBEL = 1.
<RDSV_DS_FICA_LG>-INTCA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDSV_DS_FICA_LG-BUKRS, sy-vline,
  WA_RDSV_DS_FICA_LG-GJAHR, sy-vline,
  WA_RDSV_DS_FICA_LG-NROBJ, sy-vline,
  WA_RDSV_DS_FICA_LG-NRSOBJ, sy-vline,
  WA_RDSV_DS_FICA_LG-NRYEAR, sy-vline,
  WA_RDSV_DS_FICA_LG-NRNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDSV_DS_FICA_LG 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_RDSV_DS_FICA_LG 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_RDSV_DS_FICA_LG INTO WA_RDSV_DS_FICA_LG.


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

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

*Conversion exit GJAHR, internal->external for field NRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RDSV_DS_FICA_LG-NRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDSV_DS_FICA_LG-NRYEAR.
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_RDSV_DS_FICA_LG_STR, 
MANDT TYPE STRING,
EXKEY TYPE STRING,
EXKID TYPE STRING,
OPBEL TYPE STRING,
INTCA TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
NROBJ TYPE STRING,
NRSOBJ TYPE STRING,
NRYEAR TYPE STRING,
NRNR TYPE STRING,
ODN_INT_NUM TYPE STRING,
LEGAL_DOC_CAT TYPE STRING,
INTERNAL_CODE TYPE STRING,
SERIES TYPE STRING,
ODN_INT_NUM_FROM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDSV_DS_FICA_LG_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_RDSV_DS_FICA_LG_STR-MANDT sy-vline 
WA_RDSV_DS_FICA_LG_STR-EXKEY sy-vline 
WA_RDSV_DS_FICA_LG_STR-EXKID sy-vline 
WA_RDSV_DS_FICA_LG_STR-OPBEL sy-vline 
WA_RDSV_DS_FICA_LG_STR-INTCA sy-vline 
WA_RDSV_DS_FICA_LG_STR-BUKRS sy-vline 
WA_RDSV_DS_FICA_LG_STR-GJAHR sy-vline 
WA_RDSV_DS_FICA_LG_STR-NROBJ sy-vline 
WA_RDSV_DS_FICA_LG_STR-NRSOBJ sy-vline 
WA_RDSV_DS_FICA_LG_STR-NRYEAR sy-vline 
WA_RDSV_DS_FICA_LG_STR-NRNR sy-vline 
WA_RDSV_DS_FICA_LG_STR-ODN_INT_NUM sy-vline 
WA_RDSV_DS_FICA_LG_STR-LEGAL_DOC_CAT sy-vline 
WA_RDSV_DS_FICA_LG_STR-INTERNAL_CODE sy-vline 
WA_RDSV_DS_FICA_LG_STR-SERIES sy-vline 
WA_RDSV_DS_FICA_LG_STR-ODN_INT_NUM_FROM sy-vline      INTO ld_text SEPARATED BY SPACE.

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