ABAP Select data from SAP table PAR_HARCSSD0_ALVGRD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PAR_HARCSSD0_ALVGRD 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 PAR_HARCSSD0_ALVGRD. 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 PAR_HARCSSD0_ALVGRD 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_PAR_HARCSSD0_ALVGRD TYPE STANDARD TABLE OF PAR_HARCSSD0_ALVGRD,
      WA_PAR_HARCSSD0_ALVGRD TYPE PAR_HARCSSD0_ALVGRD,
      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: <PAR_HARCSSD0_ALVGRD> TYPE PAR_HARCSSD0_ALVGRD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PAR_HARCSSD0_ALVGRD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PAR_HARCSSD0_ALVGRD
  INTO TABLE IT_PAR_HARCSSD0_ALVGRD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAR_HARCSSD0_ALVGRD
*  INTO TABLE @DATA(IT_PAR_HARCSSD0_ALVGRD2).
*--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_PAR_HARCSSD0_ALVGRD INDEX 1 INTO DATA(WA_PAR_HARCSSD0_ALVGRD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PAR_HARCSSD0_ALVGRD ASSIGNING <PAR_HARCSSD0_ALVGRD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAR_HARCSSD0_ALVGRD>-MANDT = 1.
<PAR_HARCSSD0_ALVGRD>-BUKRS = 1.
<PAR_HARCSSD0_ALVGRD>-ANOCA = 1.
<PAR_HARCSSD0_ALVGRD>-MESCA = 1.
<PAR_HARCSSD0_ALVGRD>-SEQNR = 1.

ENDLOOP.

LOOP AT IT_PAR_HARCSSD0_ALVGRD INTO WA_PAR_HARCSSD0_ALVGRD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAR_HARCSSD0_ALVGRD-STATUS, sy-vline,
  WA_PAR_HARCSSD0_ALVGRD-DEPDATE, sy-vline,
  WA_PAR_HARCSSD0_ALVGRD-BANKS, sy-vline,
  WA_PAR_HARCSSD0_ALVGRD-BANKL, sy-vline,
  WA_PAR_HARCSSD0_ALVGRD-UNAME, sy-vline,
  WA_PAR_HARCSSD0_ALVGRD-DATUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAR_HARCSSD0_ALVGRD 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_PAR_HARCSSD0_ALVGRD 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_PAR_HARCSSD0_ALVGRD INTO WA_PAR_HARCSSD0_ALVGRD.


*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 ANOCA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PAR_HARCSSD0_ALVGRD-ANOCA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PAR_HARCSSD0_ALVGRD-ANOCA.
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_PAR_HARCSSD0_ALVGRD_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
ANOCA TYPE STRING,
MESCA TYPE STRING,
SEQNR TYPE STRING,
STATUS TYPE STRING,
DEPDATE TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
UNAME TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
PGMID TYPE STRING,
BANKL_TXT TYPE STRING,
STTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAR_HARCSSD0_ALVGRD_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_PAR_HARCSSD0_ALVGRD_STR-MANDT sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-BUKRS sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-ANOCA sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-MESCA sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-SEQNR sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-STATUS sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-DEPDATE sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-BANKS sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-BANKL sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-UNAME sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-DATUM sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-UZEIT sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-PGMID sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-BANKL_TXT sy-vline 
WA_PAR_HARCSSD0_ALVGRD_STR-STTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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