ABAP Select data from SAP table PIQ_ES_TIMETABLE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_ES_TIMETABLE
*  INTO TABLE @DATA(IT_PIQ_ES_TIMETABLE2).
*--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_PIQ_ES_TIMETABLE INDEX 1 INTO DATA(WA_PIQ_ES_TIMETABLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_ES_TIMETABLE>-EVENT_DATE = 1.
<PIQ_ES_TIMETABLE>-PERIOD01 = 1.
<PIQ_ES_TIMETABLE>-PERIOD02 = 1.
<PIQ_ES_TIMETABLE>-PERIOD03 = 1.
<PIQ_ES_TIMETABLE>-PERIOD04 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_ES_TIMETABLE-PERIOD05, sy-vline,
  WA_PIQ_ES_TIMETABLE-PERIOD06, sy-vline,
  WA_PIQ_ES_TIMETABLE-PERIOD07, sy-vline,
  WA_PIQ_ES_TIMETABLE-PERIOD08, sy-vline,
  WA_PIQ_ES_TIMETABLE-PERIOD09, sy-vline,
  WA_PIQ_ES_TIMETABLE-PERIOD10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_ES_TIMETABLE 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_PIQ_ES_TIMETABLE 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_PIQ_ES_TIMETABLE INTO WA_PIQ_ES_TIMETABLE.


*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_PIQ_ES_TIMETABLE_STR, 
EVENT_DATE TYPE STRING,
PERIOD01 TYPE STRING,
PERIOD02 TYPE STRING,
PERIOD03 TYPE STRING,
PERIOD04 TYPE STRING,
PERIOD05 TYPE STRING,
PERIOD06 TYPE STRING,
PERIOD07 TYPE STRING,
PERIOD08 TYPE STRING,
PERIOD09 TYPE STRING,
PERIOD10 TYPE STRING,
PERIOD11 TYPE STRING,
PERIOD12 TYPE STRING,
PERIOD13 TYPE STRING,
PERIOD14 TYPE STRING,
PERIOD15 TYPE STRING,
PERIOD16 TYPE STRING,
PERIOD17 TYPE STRING,
PERIOD18 TYPE STRING,
PERIOD19 TYPE STRING,
PERIOD20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_ES_TIMETABLE_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_PIQ_ES_TIMETABLE_STR-EVENT_DATE sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD01 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD02 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD03 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD04 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD05 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD06 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD07 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD08 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD09 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD10 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD11 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD12 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD13 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD14 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD15 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD16 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD17 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD18 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD19 sy-vline 
WA_PIQ_ES_TIMETABLE_STR-PERIOD20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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