ABAP Select data from SAP table LXE_TM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LXE_TM
*  INTO TABLE @DATA(IT_LXE_TM2).
*--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_LXE_TM INDEX 1 INTO DATA(WA_LXE_TM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LXE_TM>-TMSALIAS = 1.
<LXE_TM>-TEXT = 1.
<LXE_TM>-CH_USER = 1.
<LXE_TM>-CH_DATE = 1.
<LXE_TM>-CH_TIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LXE_TM-CONA, sy-vline,
  WA_LXE_TM-CONT, sy-vline,
  WA_LXE_TM-MWSN, sy-vline,
  WA_LXE_TM-DBSN, sy-vline,
  WA_LXE_TM-USRA, sy-vline,
  WA_LXE_TM-USRT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LXE_TM 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_LXE_TM 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_LXE_TM INTO WA_LXE_TM.


*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_LXE_TM_STR, 
TMSALIAS TYPE STRING,
TEXT TYPE STRING,
CH_USER TYPE STRING,
CH_DATE TYPE STRING,
CH_TIME TYPE STRING,
CONA TYPE STRING,
CONT TYPE STRING,
MWSN TYPE STRING,
DBSN TYPE STRING,
USRA TYPE STRING,
USRT TYPE STRING,
CONM TYPE STRING,
USRM TYPE STRING,
DBM TYPE STRING,
SERM TYPE STRING,
MINM TYPE STRING,
SEAM TYPE STRING,
TM_DEST TYPE STRING,
CONTAINER TYPE STRING,
TEMPLATE_ALIAS TYPE STRING,
TM_DEFINITION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LXE_TM_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_LXE_TM_STR-TMSALIAS sy-vline 
WA_LXE_TM_STR-TEXT sy-vline 
WA_LXE_TM_STR-CH_USER sy-vline 
WA_LXE_TM_STR-CH_DATE sy-vline 
WA_LXE_TM_STR-CH_TIME sy-vline 
WA_LXE_TM_STR-CONA sy-vline 
WA_LXE_TM_STR-CONT sy-vline 
WA_LXE_TM_STR-MWSN sy-vline 
WA_LXE_TM_STR-DBSN sy-vline 
WA_LXE_TM_STR-USRA sy-vline 
WA_LXE_TM_STR-USRT sy-vline 
WA_LXE_TM_STR-CONM sy-vline 
WA_LXE_TM_STR-USRM sy-vline 
WA_LXE_TM_STR-DBM sy-vline 
WA_LXE_TM_STR-SERM sy-vline 
WA_LXE_TM_STR-MINM sy-vline 
WA_LXE_TM_STR-SEAM sy-vline 
WA_LXE_TM_STR-TM_DEST sy-vline 
WA_LXE_TM_STR-CONTAINER sy-vline 
WA_LXE_TM_STR-TEMPLATE_ALIAS sy-vline 
WA_LXE_TM_STR-TM_DEFINITION sy-vline      INTO ld_text SEPARATED BY SPACE.

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