ABAP Select data from SAP table P20_OVERTIME_RESULT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P20_OVERTIME_RESULT 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 P20_OVERTIME_RESULT. 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 P20_OVERTIME_RESULT 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_P20_OVERTIME_RESULT TYPE STANDARD TABLE OF P20_OVERTIME_RESULT,
      WA_P20_OVERTIME_RESULT TYPE P20_OVERTIME_RESULT,
      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: <P20_OVERTIME_RESULT> TYPE P20_OVERTIME_RESULT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P20_OVERTIME_RESULT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P20_OVERTIME_RESULT
  INTO TABLE IT_P20_OVERTIME_RESULT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P20_OVERTIME_RESULT
*  INTO TABLE @DATA(IT_P20_OVERTIME_RESULT2).
*--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_P20_OVERTIME_RESULT INDEX 1 INTO DATA(WA_P20_OVERTIME_RESULT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P20_OVERTIME_RESULT ASSIGNING <P20_OVERTIME_RESULT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P20_OVERTIME_RESULT>-PERNR = 1.
<P20_OVERTIME_RESULT>-ENAME = 1.
<P20_OVERTIME_RESULT>-PERID = 1.
<P20_OVERTIME_RESULT>-WEEK_BEG = 1.
<P20_OVERTIME_RESULT>-WEEK_END = 1.

ENDLOOP.

LOOP AT IT_P20_OVERTIME_RESULT INTO WA_P20_OVERTIME_RESULT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P20_OVERTIME_RESULT-DATE, sy-vline,
  WA_P20_OVERTIME_RESULT-CONTR_HRS, sy-vline,
  WA_P20_OVERTIME_RESULT-NORM_HRS, sy-vline,
  WA_P20_OVERTIME_RESULT-MORE_HRS, sy-vline,
  WA_P20_OVERTIME_RESULT-OVER_HRS, sy-vline,
  WA_P20_OVERTIME_RESULT-LRULE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P20_OVERTIME_RESULT 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_P20_OVERTIME_RESULT 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_P20_OVERTIME_RESULT INTO WA_P20_OVERTIME_RESULT.


*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_P20_OVERTIME_RESULT_STR, 
PERNR TYPE STRING,
ENAME TYPE STRING,
PERID TYPE STRING,
WEEK_BEG TYPE STRING,
WEEK_END TYPE STRING,
DATE TYPE STRING,
CONTR_HRS TYPE STRING,
NORM_HRS TYPE STRING,
MORE_HRS TYPE STRING,
OVER_HRS TYPE STRING,
LRULE TYPE STRING,
INTR24 TYPE STRING,
INTR07 TYPE STRING,
INTR04 TYPE STRING,
INTR52 TYPE STRING,
STATUS TYPE STRING,
HEALTH TYPE STRING,
EXEMPT TYPE STRING,
PERCENTAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P20_OVERTIME_RESULT_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_P20_OVERTIME_RESULT_STR-PERNR sy-vline 
WA_P20_OVERTIME_RESULT_STR-ENAME sy-vline 
WA_P20_OVERTIME_RESULT_STR-PERID sy-vline 
WA_P20_OVERTIME_RESULT_STR-WEEK_BEG sy-vline 
WA_P20_OVERTIME_RESULT_STR-WEEK_END sy-vline 
WA_P20_OVERTIME_RESULT_STR-DATE sy-vline 
WA_P20_OVERTIME_RESULT_STR-CONTR_HRS sy-vline 
WA_P20_OVERTIME_RESULT_STR-NORM_HRS sy-vline 
WA_P20_OVERTIME_RESULT_STR-MORE_HRS sy-vline 
WA_P20_OVERTIME_RESULT_STR-OVER_HRS sy-vline 
WA_P20_OVERTIME_RESULT_STR-LRULE sy-vline 
WA_P20_OVERTIME_RESULT_STR-INTR24 sy-vline 
WA_P20_OVERTIME_RESULT_STR-INTR07 sy-vline 
WA_P20_OVERTIME_RESULT_STR-INTR04 sy-vline 
WA_P20_OVERTIME_RESULT_STR-INTR52 sy-vline 
WA_P20_OVERTIME_RESULT_STR-STATUS sy-vline 
WA_P20_OVERTIME_RESULT_STR-HEALTH sy-vline 
WA_P20_OVERTIME_RESULT_STR-EXEMPT sy-vline 
WA_P20_OVERTIME_RESULT_STR-PERCENTAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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