ABAP Select data from SAP table FISV_GLGAPCONVBA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FISV_GLGAPCONVBA
*  INTO TABLE @DATA(IT_FISV_GLGAPCONVBA2).
*--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_FISV_GLGAPCONVBA INDEX 1 INTO DATA(WA_FISV_GLGAPCONVBA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FISV_GLGAPCONVBA>-MANDT = 1.
<FISV_GLGAPCONVBA>-BUKRS = 1.
<FISV_GLGAPCONVBA>-RANGE = 1.
<FISV_GLGAPCONVBA>-GJAHR = 1.
<FISV_GLGAPCONVBA>-RLDNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FISV_GLGAPCONVBA-DBELNR, sy-vline,
  WA_FISV_GLGAPCONVBA-YEARFROM, sy-vline,
  WA_FISV_GLGAPCONVBA-YEARTO, sy-vline,
  WA_FISV_GLGAPCONVBA-CPUDT, sy-vline,
  WA_FISV_GLGAPCONVBA-FLAG, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FISV_GLGAPCONVBA 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_FISV_GLGAPCONVBA 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_FISV_GLGAPCONVBA INTO WA_FISV_GLGAPCONVBA.


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

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_GLGAPCONVBA-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_GLGAPCONVBA-RLDNR.
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_FISV_GLGAPCONVBA_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
RANGE TYPE STRING,
GJAHR TYPE STRING,
RLDNR TYPE STRING,
DBELNR TYPE STRING,
YEARFROM TYPE STRING,
YEARTO TYPE STRING,
CPUDT TYPE STRING,
FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FISV_GLGAPCONVBA_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_FISV_GLGAPCONVBA_STR-MANDT sy-vline 
WA_FISV_GLGAPCONVBA_STR-BUKRS sy-vline 
WA_FISV_GLGAPCONVBA_STR-RANGE sy-vline 
WA_FISV_GLGAPCONVBA_STR-GJAHR sy-vline 
WA_FISV_GLGAPCONVBA_STR-RLDNR sy-vline 
WA_FISV_GLGAPCONVBA_STR-DBELNR sy-vline 
WA_FISV_GLGAPCONVBA_STR-YEARFROM sy-vline 
WA_FISV_GLGAPCONVBA_STR-YEARTO sy-vline 
WA_FISV_GLGAPCONVBA_STR-CPUDT sy-vline 
WA_FISV_GLGAPCONVBA_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.