ABAP Select data from SAP table LHUQUA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LHUQUA
*  INTO TABLE @DATA(IT_LHUQUA2).
*--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_LHUQUA INDEX 1 INTO DATA(WA_LHUQUA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LHUQUA>-ZEILE = 1.
<LHUQUA>-LENUM = 1.
<LHUQUA>-LETYP = 1.
<LHUQUA>-MATNR = 1.
<LHUQUA>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LHUQUA-LGORT, sy-vline,
  WA_LHUQUA-CHARG, sy-vline,
  WA_LHUQUA-BESTQ, sy-vline,
  WA_LHUQUA-SOBKZ, sy-vline,
  WA_LHUQUA-SONUM, sy-vline,
  WA_LHUQUA-LGNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LHUQUA 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_LHUQUA 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_LHUQUA INTO WA_LHUQUA.


*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 LENUM, internal->external for field LENUM
CALL FUNCTION 'CONVERSION_EXIT_LENUM_OUTPUT'
  EXPORTING
    input =                      WA_LHUQUA-LENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LHUQUA-LENUM.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LHUQUA-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LHUQUA-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LHUQUA-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LHUQUA-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UGWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LHUQUA-UGWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LHUQUA-UGWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QPLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LHUQUA-QPLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LHUQUA-QPLOS.
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_LHUQUA_STR, 
ZEILE TYPE STRING,
LENUM TYPE STRING,
LETYP TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BESTQ TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
UMMAT TYPE STRING,
UMWRK TYPE STRING,
UMLGO TYPE STRING,
UMCHA TYPE STRING,
UMBSQ TYPE STRING,
UMSOK TYPE STRING,
USONU TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
VHART TYPE STRING,
LDUMM TYPE STRING,
VSCHN TYPE STRING,
NSCHN TYPE STRING,
QKAPV TYPE STRING,
UQKPV TYPE STRING,
LKAPA TYPE STRING,
KKAPV TYPE STRING,
MAXLE TYPE STRING,
PLPOS TYPE STRING,
STEIN TYPE STRING,
HU_LGORT TYPE STRING,
HUSTA TYPE STRING,
SUMME TYPE STRING,
BRGEW TYPE STRING,
UBRGW TYPE STRING,
GEWEI TYPE STRING,
UGWEI TYPE STRING,
WDATU_BSUEB TYPE STRING,
VFDAT_BSUEB TYPE STRING,
ZEUGN_BSUEB TYPE STRING,
QPLOS TYPE STRING,
PLAUF TYPE STRING,
SGT_SCAT TYPE STRING,
SGT_UMSCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LHUQUA_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_LHUQUA_STR-ZEILE sy-vline 
WA_LHUQUA_STR-LENUM sy-vline 
WA_LHUQUA_STR-LETYP sy-vline 
WA_LHUQUA_STR-MATNR sy-vline 
WA_LHUQUA_STR-WERKS sy-vline 
WA_LHUQUA_STR-LGORT sy-vline 
WA_LHUQUA_STR-CHARG sy-vline 
WA_LHUQUA_STR-BESTQ sy-vline 
WA_LHUQUA_STR-SOBKZ sy-vline 
WA_LHUQUA_STR-SONUM sy-vline 
WA_LHUQUA_STR-LGNUM sy-vline 
WA_LHUQUA_STR-LGTYP sy-vline 
WA_LHUQUA_STR-LGPLA sy-vline 
WA_LHUQUA_STR-UMMAT sy-vline 
WA_LHUQUA_STR-UMWRK sy-vline 
WA_LHUQUA_STR-UMLGO sy-vline 
WA_LHUQUA_STR-UMCHA sy-vline 
WA_LHUQUA_STR-UMBSQ sy-vline 
WA_LHUQUA_STR-UMSOK sy-vline 
WA_LHUQUA_STR-USONU sy-vline 
WA_LHUQUA_STR-MENGE sy-vline 
WA_LHUQUA_STR-MEINS sy-vline 
WA_LHUQUA_STR-VHART sy-vline 
WA_LHUQUA_STR-LDUMM sy-vline 
WA_LHUQUA_STR-VSCHN sy-vline 
WA_LHUQUA_STR-NSCHN sy-vline 
WA_LHUQUA_STR-QKAPV sy-vline 
WA_LHUQUA_STR-UQKPV sy-vline 
WA_LHUQUA_STR-LKAPA sy-vline 
WA_LHUQUA_STR-KKAPV sy-vline 
WA_LHUQUA_STR-MAXLE sy-vline 
WA_LHUQUA_STR-PLPOS sy-vline 
WA_LHUQUA_STR-STEIN sy-vline 
WA_LHUQUA_STR-HU_LGORT sy-vline 
WA_LHUQUA_STR-HUSTA sy-vline 
WA_LHUQUA_STR-SUMME sy-vline 
WA_LHUQUA_STR-BRGEW sy-vline 
WA_LHUQUA_STR-UBRGW sy-vline 
WA_LHUQUA_STR-GEWEI sy-vline 
WA_LHUQUA_STR-UGWEI sy-vline 
WA_LHUQUA_STR-WDATU_BSUEB sy-vline 
WA_LHUQUA_STR-VFDAT_BSUEB sy-vline 
WA_LHUQUA_STR-ZEUGN_BSUEB sy-vline 
WA_LHUQUA_STR-QPLOS sy-vline 
WA_LHUQUA_STR-PLAUF sy-vline 
WA_LHUQUA_STR-SGT_SCAT sy-vline 
WA_LHUQUA_STR-SGT_UMSCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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