ABAP Select data from SAP table TKEBWLRE 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 TKEBWLRE 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 TKEBWLRE. 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 TKEBWLRE 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_TKEBWLRE TYPE STANDARD TABLE OF TKEBWLRE,
      WA_TKEBWLRE TYPE TKEBWLRE,
      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: <TKEBWLRE> TYPE TKEBWLRE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKEBWLRE
*  INTO TABLE @DATA(IT_TKEBWLRE2).
*--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_TKEBWLRE INDEX 1 INTO DATA(WA_TKEBWLRE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKEBWLRE>-MANDT = 1.
<TKEBWLRE>-NUMBER_ID = 1.
<TKEBWLRE>-ERKRS = 1.
<TKEBWLRE>-PATYPE = 1.
<TKEBWLRE>-BW_SYS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKEBWLRE-INFOCUBE, sy-vline,
  WA_TKEBWLRE-QUERY, sy-vline,
  WA_TKEBWLRE-ASSIGNMENT, sy-vline,
  WA_TKEBWLRE-VARIANT, sy-vline,
  WA_TKEBWLRE-PLIKZ, sy-vline,
  WA_TKEBWLRE-VRGAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKEBWLRE 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_TKEBWLRE 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_TKEBWLRE INTO WA_TKEBWLRE.


*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 ALPHA, internal->external for field VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TKEBWLRE-VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKEBWLRE-VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field ALTPERIO
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_TKEBWLRE-ALTPERIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKEBWLRE-ALTPERIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REVAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TKEBWLRE-REVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKEBWLRE-REVAL.
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_TKEBWLRE_STR, 
MANDT TYPE STRING,
NUMBER_ID TYPE STRING,
ERKRS TYPE STRING,
PATYPE TYPE STRING,
BW_SYS TYPE STRING,
INFOCUBE TYPE STRING,
QUERY TYPE STRING,
ASSIGNMENT TYPE STRING,
VARIANT TYPE STRING,
PLIKZ TYPE STRING,
VRGAR TYPE STRING,
VERSION TYPE STRING,
ALTPERIO TYPE STRING,
REVAL TYPE STRING,
BEWERT TYPE STRING,
EUSER TYPE STRING,
EDATE TYPE STRING,
ETIME TYPE STRING,
TRANSTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKEBWLRE_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_TKEBWLRE_STR-MANDT sy-vline 
WA_TKEBWLRE_STR-NUMBER_ID sy-vline 
WA_TKEBWLRE_STR-ERKRS sy-vline 
WA_TKEBWLRE_STR-PATYPE sy-vline 
WA_TKEBWLRE_STR-BW_SYS sy-vline 
WA_TKEBWLRE_STR-INFOCUBE sy-vline 
WA_TKEBWLRE_STR-QUERY sy-vline 
WA_TKEBWLRE_STR-ASSIGNMENT sy-vline 
WA_TKEBWLRE_STR-VARIANT sy-vline 
WA_TKEBWLRE_STR-PLIKZ sy-vline 
WA_TKEBWLRE_STR-VRGAR sy-vline 
WA_TKEBWLRE_STR-VERSION sy-vline 
WA_TKEBWLRE_STR-ALTPERIO sy-vline 
WA_TKEBWLRE_STR-REVAL sy-vline 
WA_TKEBWLRE_STR-BEWERT sy-vline 
WA_TKEBWLRE_STR-EUSER sy-vline 
WA_TKEBWLRE_STR-EDATE sy-vline 
WA_TKEBWLRE_STR-ETIME sy-vline 
WA_TKEBWLRE_STR-TRANSTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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