ABAP Select data from SAP table LXVASM_LVVOR_ALERT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LXVASM_LVVOR_ALERT
*  INTO TABLE @DATA(IT_LXVASM_LVVOR_ALERT2).
*--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_LXVASM_LVVOR_ALERT INDEX 1 INTO DATA(WA_LXVASM_LVVOR_ALERT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LXVASM_LVVOR_ALERT>-VORID = 1.
<LXVASM_LVVOR_ALERT>-STORD = 1.
<LXVASM_LVVOR_ALERT>-ATEXT = 1.
<LXVASM_LVVOR_ALERT>-DOCTY = 1.
<LXVASM_LVVOR_ALERT>-DOCNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LXVASM_LVVOR_ALERT-DOCIT, sy-vline,
  WA_LXVASM_LVVOR_ALERT-MATNR, sy-vline,
  WA_LXVASM_LVVOR_ALERT-WRKST, sy-vline,
  WA_LXVASM_LVVOR_ALERT-PIID, sy-vline,
  WA_LXVASM_LVVOR_ALERT-WCSEQ, sy-vline,
  WA_LXVASM_LVVOR_ALERT-ACTSQ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LXVASM_LVVOR_ALERT 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_LXVASM_LVVOR_ALERT 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_LXVASM_LVVOR_ALERT INTO WA_LXVASM_LVVOR_ALERT.


*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 DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LXVASM_LVVOR_ALERT-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVASM_LVVOR_ALERT-DOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_LXVASM_LVVOR_ALERT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVASM_LVVOR_ALERT-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSHME, internal->external for field CRETS
CALL FUNCTION 'CONVERSION_EXIT_TSHME_OUTPUT'
  EXPORTING
    input =                      WA_LXVASM_LVVOR_ALERT-CRETS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVASM_LVVOR_ALERT-CRETS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSHME, internal->external for field UPDTS
CALL FUNCTION 'CONVERSION_EXIT_TSHME_OUTPUT'
  EXPORTING
    input =                      WA_LXVASM_LVVOR_ALERT-UPDTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVASM_LVVOR_ALERT-UPDTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSHME, internal->external for field UPSTS
CALL FUNCTION 'CONVERSION_EXIT_TSHME_OUTPUT'
  EXPORTING
    input =                      WA_LXVASM_LVVOR_ALERT-UPSTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVASM_LVVOR_ALERT-UPSTS.
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_LXVASM_LVVOR_ALERT_STR, 
VORID TYPE STRING,
STORD TYPE STRING,
ATEXT TYPE STRING,
DOCTY TYPE STRING,
DOCNR TYPE STRING,
DOCIT TYPE STRING,
MATNR TYPE STRING,
WRKST TYPE STRING,
PIID TYPE STRING,
WCSEQ TYPE STRING,
ACTSQ TYPE STRING,
DSPDU TYPE STRING,
BPNAME TYPE STRING,
CRETS TYPE STRING,
CREUN TYPE STRING,
UPDTS TYPE STRING,
UPDUN TYPE STRING,
UPSTS TYPE STRING,
WORKR TYPE STRING,
LIGHTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LXVASM_LVVOR_ALERT_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_LXVASM_LVVOR_ALERT_STR-VORID sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-STORD sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-ATEXT sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-DOCTY sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-DOCNR sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-DOCIT sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-MATNR sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-WRKST sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-PIID sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-WCSEQ sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-ACTSQ sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-DSPDU sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-BPNAME sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-CRETS sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-CREUN sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-UPDTS sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-UPDUN sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-UPSTS sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-WORKR sy-vline 
WA_LXVASM_LVVOR_ALERT_STR-LIGHTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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