ABAP Select data from SAP table HRPAY99_S_SCHEMA_WHERE_USED into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRPAY99_S_SCHEMA_WHERE_USED 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 HRPAY99_S_SCHEMA_WHERE_USED. 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 HRPAY99_S_SCHEMA_WHERE_USED 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_HRPAY99_S_SCHEMA_WHERE_USED TYPE STANDARD TABLE OF HRPAY99_S_SCHEMA_WHERE_USED,
      WA_HRPAY99_S_SCHEMA_WHERE_USED TYPE HRPAY99_S_SCHEMA_WHERE_USED,
      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: <HRPAY99_S_SCHEMA_WHERE_USED> TYPE HRPAY99_S_SCHEMA_WHERE_USED.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRPAY99_S_SCHEMA_WHERE_USED.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRPAY99_S_SCHEMA_WHERE_USED
  INTO TABLE IT_HRPAY99_S_SCHEMA_WHERE_USED.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPAY99_S_SCHEMA_WHERE_USED
*  INTO TABLE @DATA(IT_HRPAY99_S_SCHEMA_WHERE_USED2).
*--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_HRPAY99_S_SCHEMA_WHERE_USED INDEX 1 INTO DATA(WA_HRPAY99_S_SCHEMA_WHERE_USED2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRPAY99_S_SCHEMA_WHERE_USED ASSIGNING <HRPAY99_S_SCHEMA_WHERE_USED>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPAY99_S_SCHEMA_WHERE_USED>-SCHEM = 1.
<HRPAY99_S_SCHEMA_WHERE_USED>-SEQNO = 1.
<HRPAY99_S_SCHEMA_WHERE_USED>-FUNCO = 1.
<HRPAY99_S_SCHEMA_WHERE_USED>-PARM1 = 1.
<HRPAY99_S_SCHEMA_WHERE_USED>-PARM2 = 1.

ENDLOOP.

LOOP AT IT_HRPAY99_S_SCHEMA_WHERE_USED INTO WA_HRPAY99_S_SCHEMA_WHERE_USED.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPAY99_S_SCHEMA_WHERE_USED-PARM3, sy-vline,
  WA_HRPAY99_S_SCHEMA_WHERE_USED-PARM4, sy-vline,
  WA_HRPAY99_S_SCHEMA_WHERE_USED-PROTO, sy-vline,
  WA_HRPAY99_S_SCHEMA_WHERE_USED-DELET, sy-vline,
  WA_HRPAY99_S_SCHEMA_WHERE_USED-TEXTID, sy-vline,
  WA_HRPAY99_S_SCHEMA_WHERE_USED-POSSIBLE_USE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPAY99_S_SCHEMA_WHERE_USED 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_HRPAY99_S_SCHEMA_WHERE_USED 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_HRPAY99_S_SCHEMA_WHERE_USED INTO WA_HRPAY99_S_SCHEMA_WHERE_USED.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HRPAY99_S_SCHEMA_WHERE_USED_STR, 
SCHEM TYPE STRING,
SEQNO TYPE STRING,
FUNCO TYPE STRING,
PARM1 TYPE STRING,
PARM2 TYPE STRING,
PARM3 TYPE STRING,
PARM4 TYPE STRING,
PROTO TYPE STRING,
DELET TYPE STRING,
TEXTID TYPE STRING,
POSSIBLE_USE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPAY99_S_SCHEMA_WHERE_USED_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_HRPAY99_S_SCHEMA_WHERE_USED_STR-SCHEM sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-SEQNO sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-FUNCO sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-PARM1 sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-PARM2 sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-PARM3 sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-PARM4 sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-PROTO sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-DELET sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-TEXTID sy-vline 
WA_HRPAY99_S_SCHEMA_WHERE_USED_STR-POSSIBLE_USE sy-vline      INTO ld_text SEPARATED BY SPACE.

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