ABAP Select data from SAP table ERTP_DAY_TIME_INTERVALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ERTP_DAY_TIME_INTERVALL
*  INTO TABLE @DATA(IT_ERTP_DAY_TIME_INTERVALL2).
*--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_ERTP_DAY_TIME_INTERVALL INDEX 1 INTO DATA(WA_ERTP_DAY_TIME_INTERVALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ERTP_DAY_TIME_INTERVALL>-TIME1 = 1.
<ERTP_DAY_TIME_INTERVALL>-TIME2 = 1.
<ERTP_DAY_TIME_INTERVALL>-TIME3 = 1.
<ERTP_DAY_TIME_INTERVALL>-TIME4 = 1.
<ERTP_DAY_TIME_INTERVALL>-TIME5 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ERTP_DAY_TIME_INTERVALL-TIME6, sy-vline,
  WA_ERTP_DAY_TIME_INTERVALL-TIME7, sy-vline,
  WA_ERTP_DAY_TIME_INTERVALL-TIME8, sy-vline,
  WA_ERTP_DAY_TIME_INTERVALL-TIME9, sy-vline,
  WA_ERTP_DAY_TIME_INTERVALL-TIME10, sy-vline,
  WA_ERTP_DAY_TIME_INTERVALL-TIME11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ERTP_DAY_TIME_INTERVALL 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_ERTP_DAY_TIME_INTERVALL 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_ERTP_DAY_TIME_INTERVALL INTO WA_ERTP_DAY_TIME_INTERVALL.


*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_ERTP_DAY_TIME_INTERVALL_STR, 
TIME1 TYPE STRING,
TIME2 TYPE STRING,
TIME3 TYPE STRING,
TIME4 TYPE STRING,
TIME5 TYPE STRING,
TIME6 TYPE STRING,
TIME7 TYPE STRING,
TIME8 TYPE STRING,
TIME9 TYPE STRING,
TIME10 TYPE STRING,
TIME11 TYPE STRING,
TIME12 TYPE STRING,
TIME13 TYPE STRING,
TIME14 TYPE STRING,
TIME15 TYPE STRING,
TIME16 TYPE STRING,
TIME17 TYPE STRING,
TIME18 TYPE STRING,
TIME19 TYPE STRING,
TIME20 TYPE STRING,
TIME21 TYPE STRING,
TIME22 TYPE STRING,
TIME23 TYPE STRING,
TIME24 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ERTP_DAY_TIME_INTERVALL_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_ERTP_DAY_TIME_INTERVALL_STR-TIME1 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME2 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME3 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME4 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME5 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME6 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME7 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME8 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME9 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME10 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME11 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME12 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME13 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME14 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME15 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME16 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME17 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME18 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME19 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME20 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME21 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME22 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME23 sy-vline 
WA_ERTP_DAY_TIME_INTERVALL_STR-TIME24 sy-vline      INTO ld_text SEPARATED BY SPACE.

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