ABAP Select data from SAP table LQUA_IM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LQUA_IM
*  INTO TABLE @DATA(IT_LQUA_IM2).
*--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_LQUA_IM INDEX 1 INTO DATA(WA_LQUA_IM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LQUA_IM>-LGNUM = 1.
<LQUA_IM>-LQNUM = 1.
<LQUA_IM>-MATNR = 1.
<LQUA_IM>-MENGE = 1.
<LQUA_IM>-MEINS = 1.

ENDLOOP.

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

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


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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field /CWM/ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LQUA_IM-/CWM/ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LQUA_IM-/CWM/ERFME.
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_LQUA_IM_STR, 
LGNUM TYPE STRING,
LQNUM TYPE STRING,
MATNR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BESTQ TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
PLPOS TYPE STRING,
UMMAT TYPE STRING,
UMWRK TYPE STRING,
UMLGO TYPE STRING,
UMCHA TYPE STRING,
UMBSQ TYPE STRING,
UMSOK TYPE STRING,
USONU TYPE STRING,
GESME TYPE STRING,
VERME TYPE STRING,
EINME TYPE STRING,
AUSME TYPE STRING,
QPLOS TYPE STRING,
VFDAT TYPE STRING,
LENUM TYPE STRING,
BWART TYPE STRING,
LANUM TYPE STRING,
VZCHN TYPE STRING,
GRUND TYPE STRING,
SGT_SCAT TYPE STRING,
/CWM/ERFMG TYPE STRING,
/CWM/ERFME TYPE STRING,
/CWM/XCWMAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LQUA_IM_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_LQUA_IM_STR-LGNUM sy-vline 
WA_LQUA_IM_STR-LQNUM sy-vline 
WA_LQUA_IM_STR-MATNR sy-vline 
WA_LQUA_IM_STR-MENGE sy-vline 
WA_LQUA_IM_STR-MEINS sy-vline 
WA_LQUA_IM_STR-WERKS sy-vline 
WA_LQUA_IM_STR-LGORT sy-vline 
WA_LQUA_IM_STR-CHARG sy-vline 
WA_LQUA_IM_STR-BESTQ sy-vline 
WA_LQUA_IM_STR-SOBKZ sy-vline 
WA_LQUA_IM_STR-SONUM sy-vline 
WA_LQUA_IM_STR-LGTYP sy-vline 
WA_LQUA_IM_STR-LGPLA sy-vline 
WA_LQUA_IM_STR-PLPOS sy-vline 
WA_LQUA_IM_STR-UMMAT sy-vline 
WA_LQUA_IM_STR-UMWRK sy-vline 
WA_LQUA_IM_STR-UMLGO sy-vline 
WA_LQUA_IM_STR-UMCHA sy-vline 
WA_LQUA_IM_STR-UMBSQ sy-vline 
WA_LQUA_IM_STR-UMSOK sy-vline 
WA_LQUA_IM_STR-USONU sy-vline 
WA_LQUA_IM_STR-GESME sy-vline 
WA_LQUA_IM_STR-VERME sy-vline 
WA_LQUA_IM_STR-EINME sy-vline 
WA_LQUA_IM_STR-AUSME sy-vline 
WA_LQUA_IM_STR-QPLOS sy-vline 
WA_LQUA_IM_STR-VFDAT sy-vline 
WA_LQUA_IM_STR-LENUM sy-vline 
WA_LQUA_IM_STR-BWART sy-vline 
WA_LQUA_IM_STR-LANUM sy-vline 
WA_LQUA_IM_STR-VZCHN sy-vline 
WA_LQUA_IM_STR-GRUND sy-vline 
WA_LQUA_IM_STR-SGT_SCAT sy-vline 
WA_LQUA_IM_STR-/CWM/ERFMG sy-vline 
WA_LQUA_IM_STR-/CWM/ERFME sy-vline 
WA_LQUA_IM_STR-/CWM/XCWMAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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