ABAP Select data from SAP table LQUAU into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LQUAU
*  INTO TABLE @DATA(IT_LQUAU2).
*--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_LQUAU INDEX 1 INTO DATA(WA_LQUAU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LQUAU>-LQNUM = 1.
<LQUAU>-LGTYP = 1.
<LQUAU>-LGPLA = 1.
<LQUAU>-PLPOS = 1.
<LQUAU>-LETYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LQUAU-SKZSI, sy-vline,
  WA_LQUAU-SKZSE, sy-vline,
  WA_LQUAU-SKZSA, sy-vline,
  WA_LQUAU-SKZUE, sy-vline,
  WA_LQUAU-SKZUA, sy-vline,
  WA_LQUAU-PKZSA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LQUAU 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_LQUAU 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_LQUAU INTO WA_LQUAU.


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

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

*Conversion exit LENUM, internal->external for field LENUM
CALL FUNCTION 'CONVERSION_EXIT_LENUM_OUTPUT'
  EXPORTING
    input =                      WA_LQUAU-LENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LQUAU-LENUM.
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_LQUAU_STR, 
LQNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
PLPOS TYPE STRING,
LETYP TYPE STRING,
SKZSI TYPE STRING,
SKZSE TYPE STRING,
SKZSA TYPE STRING,
SKZUE TYPE STRING,
SKZUA TYPE STRING,
PKZSA TYPE STRING,
PKZUA TYPE STRING,
PKZBL TYPE STRING,
SKZAU TYPE STRING,
LKZUA TYPE STRING,
LSTAT TYPE STRING,
TBNUM TYPE STRING,
TBPOS TYPE STRING,
WENUM TYPE STRING,
QPLOS TYPE STRING,
WDATU TYPE STRING,
VERME TYPE STRING,
VERMA TYPE STRING,
EINME TYPE STRING,
EINMA TYPE STRING,
SELML TYPE STRING,
SELMG TYPE STRING,
SELKZ TYPE STRING,
XTAPS TYPE STRING,
KZUAP TYPE STRING,
LENUM TYPE STRING,
BLOLE TYPE STRING,
VFDAT TYPE STRING,
WEPOS TYPE STRING,
HUQUA TYPE STRING,
AUSME TYPE STRING,
MSR_INSP_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LQUAU_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_LQUAU_STR-LQNUM sy-vline 
WA_LQUAU_STR-LGTYP sy-vline 
WA_LQUAU_STR-LGPLA sy-vline 
WA_LQUAU_STR-PLPOS sy-vline 
WA_LQUAU_STR-LETYP sy-vline 
WA_LQUAU_STR-SKZSI sy-vline 
WA_LQUAU_STR-SKZSE sy-vline 
WA_LQUAU_STR-SKZSA sy-vline 
WA_LQUAU_STR-SKZUE sy-vline 
WA_LQUAU_STR-SKZUA sy-vline 
WA_LQUAU_STR-PKZSA sy-vline 
WA_LQUAU_STR-PKZUA sy-vline 
WA_LQUAU_STR-PKZBL sy-vline 
WA_LQUAU_STR-SKZAU sy-vline 
WA_LQUAU_STR-LKZUA sy-vline 
WA_LQUAU_STR-LSTAT sy-vline 
WA_LQUAU_STR-TBNUM sy-vline 
WA_LQUAU_STR-TBPOS sy-vline 
WA_LQUAU_STR-WENUM sy-vline 
WA_LQUAU_STR-QPLOS sy-vline 
WA_LQUAU_STR-WDATU sy-vline 
WA_LQUAU_STR-VERME sy-vline 
WA_LQUAU_STR-VERMA sy-vline 
WA_LQUAU_STR-EINME sy-vline 
WA_LQUAU_STR-EINMA sy-vline 
WA_LQUAU_STR-SELML sy-vline 
WA_LQUAU_STR-SELMG sy-vline 
WA_LQUAU_STR-SELKZ sy-vline 
WA_LQUAU_STR-XTAPS sy-vline 
WA_LQUAU_STR-KZUAP sy-vline 
WA_LQUAU_STR-LENUM sy-vline 
WA_LQUAU_STR-BLOLE sy-vline 
WA_LQUAU_STR-VFDAT sy-vline 
WA_LQUAU_STR-WEPOS sy-vline 
WA_LQUAU_STR-HUQUA sy-vline 
WA_LQUAU_STR-AUSME sy-vline 
WA_LQUAU_STR-MSR_INSP_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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