ABAP Select data from SAP table TKEB1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TKEB1 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 TKEB1. 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 TKEB1 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_TKEB1 TYPE STANDARD TABLE OF TKEB1,
      WA_TKEB1 TYPE TKEB1,
      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: <TKEB1> TYPE TKEB1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TKEB1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TKEB1
  INTO TABLE IT_TKEB1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKEB1
*  INTO TABLE @DATA(IT_TKEB12).
*--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_TKEB1 INDEX 1 INTO DATA(WA_TKEB12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TKEB1 ASSIGNING <TKEB1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKEB1>-MANDT = 1.
<TKEB1>-APPLCLASS = 1.
<TKEB1>-SUBCLASS = 1.
<TKEB1>-TABNAME = 1.
<TKEB1>-REPID = 1.

ENDLOOP.

LOOP AT IT_TKEB1 INTO WA_TKEB1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKEB1-TFLAG, sy-vline,
  WA_TKEB1-COBJID, sy-vline,
  WA_TKEB1-SMODE, sy-vline,
  WA_TKEB1-SOURC, sy-vline,
  WA_TKEB1-UNAME, sy-vline,
  WA_TKEB1-GDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKEB1 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_TKEB1 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_TKEB1 INTO WA_TKEB1.


*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_TKEB1_STR, 
MANDT TYPE STRING,
APPLCLASS TYPE STRING,
SUBCLASS TYPE STRING,
TABNAME TYPE STRING,
REPID TYPE STRING,
TFLAG TYPE STRING,
COBJID TYPE STRING,
SMODE TYPE STRING,
SOURC TYPE STRING,
UNAME TYPE STRING,
GDATE TYPE STRING,
MODCN TYPE STRING,
MODNA TYPE STRING,
MODDA TYPE STRING,
MODTI TYPE STRING,
CNSUB TYPE STRING,
LASUB TYPE STRING,
SECU TYPE STRING,
INDX TYPE STRING,
INDXDA TYPE STRING,
INDXTI TYPE STRING,
DVERS TYPE STRING,
EPOS TYPE STRING,
SUBCLASSF TYPE STRING,
FORM TYPE STRING,
RNAME TYPE STRING,
VARKE TYPE STRING,
VARFE TYPE STRING,
VARTE TYPE STRING,
PAGEW TYPE STRING,
GENSTATUS TYPE STRING,
REP_GRP TYPE STRING,
PSL_SOURCE TYPE STRING,
S0_ROUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKEB1_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_TKEB1_STR-MANDT sy-vline 
WA_TKEB1_STR-APPLCLASS sy-vline 
WA_TKEB1_STR-SUBCLASS sy-vline 
WA_TKEB1_STR-TABNAME sy-vline 
WA_TKEB1_STR-REPID sy-vline 
WA_TKEB1_STR-TFLAG sy-vline 
WA_TKEB1_STR-COBJID sy-vline 
WA_TKEB1_STR-SMODE sy-vline 
WA_TKEB1_STR-SOURC sy-vline 
WA_TKEB1_STR-UNAME sy-vline 
WA_TKEB1_STR-GDATE sy-vline 
WA_TKEB1_STR-MODCN sy-vline 
WA_TKEB1_STR-MODNA sy-vline 
WA_TKEB1_STR-MODDA sy-vline 
WA_TKEB1_STR-MODTI sy-vline 
WA_TKEB1_STR-CNSUB sy-vline 
WA_TKEB1_STR-LASUB sy-vline 
WA_TKEB1_STR-SECU sy-vline 
WA_TKEB1_STR-INDX sy-vline 
WA_TKEB1_STR-INDXDA sy-vline 
WA_TKEB1_STR-INDXTI sy-vline 
WA_TKEB1_STR-DVERS sy-vline 
WA_TKEB1_STR-EPOS sy-vline 
WA_TKEB1_STR-SUBCLASSF sy-vline 
WA_TKEB1_STR-FORM sy-vline 
WA_TKEB1_STR-RNAME sy-vline 
WA_TKEB1_STR-VARKE sy-vline 
WA_TKEB1_STR-VARFE sy-vline 
WA_TKEB1_STR-VARTE sy-vline 
WA_TKEB1_STR-PAGEW sy-vline 
WA_TKEB1_STR-GENSTATUS sy-vline 
WA_TKEB1_STR-REP_GRP sy-vline 
WA_TKEB1_STR-PSL_SOURCE sy-vline 
WA_TKEB1_STR-S0_ROUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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