ABAP Select data from SAP table TKETRLGPS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKETRLGPS
*  INTO TABLE @DATA(IT_TKETRLGPS2).
*--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_TKETRLGPS INDEX 1 INTO DATA(WA_TKETRLGPS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKETRLGPS>-MANDT = 1.
<TKETRLGPS>-APPLCLASS = 1.
<TKETRLGPS>-SUBCLASS = 1.
<TKETRLGPS>-TABNAME = 1.
<TKETRLGPS>-TRCATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKETRLGPS-PERIO, sy-vline,
  WA_TKETRLGPS-STATUS, sy-vline,
  WA_TKETRLGPS-JOBNAME, sy-vline,
  WA_TKETRLGPS-JOBCOUNT, sy-vline,
  WA_TKETRLGPS-STATTOE, sy-vline,
  WA_TKETRLGPS-ANZREC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKETRLGPS 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_TKETRLGPS 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_TKETRLGPS INTO WA_TKETRLGPS.


*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 PERI7, internal->external for field PERIO
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_TKETRLGPS-PERIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKETRLGPS-PERIO.
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_TKETRLGPS_STR, 
MANDT TYPE STRING,
APPLCLASS TYPE STRING,
SUBCLASS TYPE STRING,
TABNAME TYPE STRING,
TRCATNR TYPE STRING,
PERIO TYPE STRING,
STATUS TYPE STRING,
JOBNAME TYPE STRING,
JOBCOUNT TYPE STRING,
STATTOE TYPE STRING,
ANZREC TYPE STRING,
TIMESTMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKETRLGPS_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_TKETRLGPS_STR-MANDT sy-vline 
WA_TKETRLGPS_STR-APPLCLASS sy-vline 
WA_TKETRLGPS_STR-SUBCLASS sy-vline 
WA_TKETRLGPS_STR-TABNAME sy-vline 
WA_TKETRLGPS_STR-TRCATNR sy-vline 
WA_TKETRLGPS_STR-PERIO sy-vline 
WA_TKETRLGPS_STR-STATUS sy-vline 
WA_TKETRLGPS_STR-JOBNAME sy-vline 
WA_TKETRLGPS_STR-JOBCOUNT sy-vline 
WA_TKETRLGPS_STR-STATTOE sy-vline 
WA_TKETRLGPS_STR-ANZREC sy-vline 
WA_TKETRLGPS_STR-TIMESTMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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