ABAP Select data from SAP table TKTGLC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKTGLC
*  INTO TABLE @DATA(IT_TKTGLC2).
*--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_TKTGLC INDEX 1 INTO DATA(WA_TKTGLC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKTGLC>-MANDT = 1.
<TKTGLC>-KBB_VIEW = 1.
<TKTGLC>-KBLBL = 1.
<TKTGLC>-PKZLUMB = 1.
<TKTGLC>-PKKEYSP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKTGLC-PKKEYSODE, sy-vline,
  WA_TKTGLC-PKPOSSP, sy-vline,
  WA_TKTGLC-PKPOSSODE, sy-vline,
  WA_TKTGLC-PKBSTSP, sy-vline,
  WA_TKTGLC-PKBSTSODE, sy-vline,
  WA_TKTGLC-LCHNGSP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKTGLC 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_TKTGLC 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_TKTGLC INTO WA_TKTGLC.


*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_TKTGLC_STR, 
MANDT TYPE STRING,
KBB_VIEW TYPE STRING,
KBLBL TYPE STRING,
PKZLUMB TYPE STRING,
PKKEYSP TYPE STRING,
PKKEYSODE TYPE STRING,
PKPOSSP TYPE STRING,
PKPOSSODE TYPE STRING,
PKBSTSP TYPE STRING,
PKBSTSODE TYPE STRING,
LCHNGSP TYPE STRING,
LCHNGSODE TYPE STRING,
PKIMGSP TYPE STRING,
PKIMGSODE TYPE STRING,
PKTIMER TYPE STRING,
BDTERSP TYPE STRING,
BDTERSODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKTGLC_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_TKTGLC_STR-MANDT sy-vline 
WA_TKTGLC_STR-KBB_VIEW sy-vline 
WA_TKTGLC_STR-KBLBL sy-vline 
WA_TKTGLC_STR-PKZLUMB sy-vline 
WA_TKTGLC_STR-PKKEYSP sy-vline 
WA_TKTGLC_STR-PKKEYSODE sy-vline 
WA_TKTGLC_STR-PKPOSSP sy-vline 
WA_TKTGLC_STR-PKPOSSODE sy-vline 
WA_TKTGLC_STR-PKBSTSP sy-vline 
WA_TKTGLC_STR-PKBSTSODE sy-vline 
WA_TKTGLC_STR-LCHNGSP sy-vline 
WA_TKTGLC_STR-LCHNGSODE sy-vline 
WA_TKTGLC_STR-PKIMGSP sy-vline 
WA_TKTGLC_STR-PKIMGSODE sy-vline 
WA_TKTGLC_STR-PKTIMER sy-vline 
WA_TKTGLC_STR-BDTERSP sy-vline 
WA_TKTGLC_STR-BDTERSODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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