ABAP Select data from SAP table LXHME_LDOCV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LXHME_LDOCV
*  INTO TABLE @DATA(IT_LXHME_LDOCV2).
*--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_LXHME_LDOCV INDEX 1 INTO DATA(WA_LXHME_LDOCV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LXHME_LDOCV>-LGNUM = 1.
<LXHME_LDOCV>-DOCTY = 1.
<LXHME_LDOCV>-DOCNR = 1.
<LXHME_LDOCV>-DOCPR = 1.
<LXHME_LDOCV>-TKNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LXHME_LDOCV-ROUTE, sy-vline,
  WA_LXHME_LDOCV-LGTOR, sy-vline,
  WA_LXHME_LDOCV-LGBZO, sy-vline,
  WA_LXHME_LDOCV-SPDNR, sy-vline,
  WA_LXHME_LDOCV-NAME_SP, sy-vline,
  WA_LXHME_LDOCV-XPLDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LXHME_LDOCV 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_LXHME_LDOCV 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_LXHME_LDOCV INTO WA_LXHME_LDOCV.


*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_LXHME_LDOCV-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXHME_LDOCV-DOCNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PWLIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LXHME_LDOCV-PWLIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXHME_LDOCV-PWLIF.
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_LXHME_LDOCV_STR, 
LGNUM TYPE STRING,
DOCTY TYPE STRING,
DOCNR TYPE STRING,
DOCPR TYPE STRING,
TKNUM TYPE STRING,
ROUTE TYPE STRING,
LGTOR TYPE STRING,
LGBZO TYPE STRING,
SPDNR TYPE STRING,
NAME_SP TYPE STRING,
XPLDT TYPE STRING,
SHPDT TYPE STRING,
RLSDT TYPE STRING,
MTCDT TYPE STRING,
KODAT TYPE STRING,
LDDAT TYPE STRING,
TDDAT TYPE STRING,
WADAT TYPE STRING,
LFDAT TYPE STRING,
VKORG TYPE STRING,
VTWIV TYPE STRING,
VSTEL TYPE STRING,
PRVBE TYPE STRING,
TERNR TYPE STRING,
KUNAG TYPE STRING,
KUNNR TYPE STRING,
KDGRP TYPE STRING,
AULWE TYPE STRING,
LSTEL TYPE STRING,
ABLAD TYPE STRING,
VSART TYPE STRING,
GMSTS TYPE STRING,
VSBED TYPE STRING,
LIFNR TYPE STRING,
LIFEX TYPE STRING,
BETYP TYPE STRING,
BENUM TYPE STRING,
LZNUM TYPE STRING,
TRAID TYPE STRING,
ITEMS TYPE STRING,
GRPNR TYPE STRING,
IMWRK TYPE STRING,
TRAGR TYPE STRING,
PWLIF TYPE STRING,
RESWK TYPE STRING,
DOCIT TYPE STRING,
OBJIN TYPE STRING,
BPRTN TYPE STRING,
LOCKI TYPE STRING,
LDCVI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LXHME_LDOCV_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_LXHME_LDOCV_STR-LGNUM sy-vline 
WA_LXHME_LDOCV_STR-DOCTY sy-vline 
WA_LXHME_LDOCV_STR-DOCNR sy-vline 
WA_LXHME_LDOCV_STR-DOCPR sy-vline 
WA_LXHME_LDOCV_STR-TKNUM sy-vline 
WA_LXHME_LDOCV_STR-ROUTE sy-vline 
WA_LXHME_LDOCV_STR-LGTOR sy-vline 
WA_LXHME_LDOCV_STR-LGBZO sy-vline 
WA_LXHME_LDOCV_STR-SPDNR sy-vline 
WA_LXHME_LDOCV_STR-NAME_SP sy-vline 
WA_LXHME_LDOCV_STR-XPLDT sy-vline 
WA_LXHME_LDOCV_STR-SHPDT sy-vline 
WA_LXHME_LDOCV_STR-RLSDT sy-vline 
WA_LXHME_LDOCV_STR-MTCDT sy-vline 
WA_LXHME_LDOCV_STR-KODAT sy-vline 
WA_LXHME_LDOCV_STR-LDDAT sy-vline 
WA_LXHME_LDOCV_STR-TDDAT sy-vline 
WA_LXHME_LDOCV_STR-WADAT sy-vline 
WA_LXHME_LDOCV_STR-LFDAT sy-vline 
WA_LXHME_LDOCV_STR-VKORG sy-vline 
WA_LXHME_LDOCV_STR-VTWIV sy-vline 
WA_LXHME_LDOCV_STR-VSTEL sy-vline 
WA_LXHME_LDOCV_STR-PRVBE sy-vline 
WA_LXHME_LDOCV_STR-TERNR sy-vline 
WA_LXHME_LDOCV_STR-KUNAG sy-vline 
WA_LXHME_LDOCV_STR-KUNNR sy-vline 
WA_LXHME_LDOCV_STR-KDGRP sy-vline 
WA_LXHME_LDOCV_STR-AULWE sy-vline 
WA_LXHME_LDOCV_STR-LSTEL sy-vline 
WA_LXHME_LDOCV_STR-ABLAD sy-vline 
WA_LXHME_LDOCV_STR-VSART sy-vline 
WA_LXHME_LDOCV_STR-GMSTS sy-vline 
WA_LXHME_LDOCV_STR-VSBED sy-vline 
WA_LXHME_LDOCV_STR-LIFNR sy-vline 
WA_LXHME_LDOCV_STR-LIFEX sy-vline 
WA_LXHME_LDOCV_STR-BETYP sy-vline 
WA_LXHME_LDOCV_STR-BENUM sy-vline 
WA_LXHME_LDOCV_STR-LZNUM sy-vline 
WA_LXHME_LDOCV_STR-TRAID sy-vline 
WA_LXHME_LDOCV_STR-ITEMS sy-vline 
WA_LXHME_LDOCV_STR-GRPNR sy-vline 
WA_LXHME_LDOCV_STR-IMWRK sy-vline 
WA_LXHME_LDOCV_STR-TRAGR sy-vline 
WA_LXHME_LDOCV_STR-PWLIF sy-vline 
WA_LXHME_LDOCV_STR-RESWK sy-vline 
WA_LXHME_LDOCV_STR-DOCIT sy-vline 
WA_LXHME_LDOCV_STR-OBJIN sy-vline 
WA_LXHME_LDOCV_STR-BPRTN sy-vline 
WA_LXHME_LDOCV_STR-LOCKI sy-vline 
WA_LXHME_LDOCV_STR-LDCVI sy-vline      INTO ld_text SEPARATED BY SPACE.

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