ABAP Select data from SAP table LXE_REMRKS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LXE_REMRKS 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_REMRKS. 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_REMRKS 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_REMRKS TYPE STANDARD TABLE OF LXE_REMRKS,
      WA_LXE_REMRKS TYPE LXE_REMRKS,
      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_REMRKS> TYPE LXE_REMRKS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LXE_REMRKS
*  INTO TABLE @DATA(IT_LXE_REMRKS2).
*--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_REMRKS INDEX 1 INTO DATA(WA_LXE_REMRKS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LXE_REMRKS>-CUSTNO = 1.
<LXE_REMRKS>-OBJTYPE = 1.
<LXE_REMRKS>-OBJNAME = 1.
<LXE_REMRKS>-TXTKEY = 1.
<LXE_REMRKS>-DESCRIPT1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LXE_REMRKS-DESCRIPT2, sy-vline,
  WA_LXE_REMRKS-DESCRIPT3, sy-vline,
  WA_LXE_REMRKS-DESCRIPT4, sy-vline,
  WA_LXE_REMRKS-DESCRIPT5, sy-vline,
  WA_LXE_REMRKS-DESCRIPT6, sy-vline,
  WA_LXE_REMRKS-DESCRIPT7, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LXE_REMRKS 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_REMRKS 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_REMRKS INTO WA_LXE_REMRKS.


*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_REMRKS_STR, 
CUSTNO TYPE STRING,
OBJTYPE TYPE STRING,
OBJNAME TYPE STRING,
TXTKEY TYPE STRING,
DESCRIPT1 TYPE STRING,
DESCRIPT2 TYPE STRING,
DESCRIPT3 TYPE STRING,
DESCRIPT4 TYPE STRING,
DESCRIPT5 TYPE STRING,
DESCRIPT6 TYPE STRING,
DESCRIPT7 TYPE STRING,
DESCRIPT8 TYPE STRING,
DESCRIPT9 TYPE STRING,
DESCRIPT10 TYPE STRING,
UNAME TYPE STRING,
CHDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LXE_REMRKS_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_REMRKS_STR-CUSTNO sy-vline 
WA_LXE_REMRKS_STR-OBJTYPE sy-vline 
WA_LXE_REMRKS_STR-OBJNAME sy-vline 
WA_LXE_REMRKS_STR-TXTKEY sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT1 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT2 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT3 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT4 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT5 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT6 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT7 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT8 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT9 sy-vline 
WA_LXE_REMRKS_STR-DESCRIPT10 sy-vline 
WA_LXE_REMRKS_STR-UNAME sy-vline 
WA_LXE_REMRKS_STR-CHDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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