ABAP Select data from SAP table LQUA 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 LQUA 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. 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 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 TYPE STANDARD TABLE OF LQUA,
      WA_LQUA TYPE LQUA,
      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> TYPE LQUA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LQUA
*  INTO TABLE @DATA(IT_LQUA2).
*--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 INDEX 1 INTO DATA(WA_LQUA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LQUA>-MANDT = 1.
<LQUA>-LGNUM = 1.
<LQUA>-LQNUM = 1.
<LQUA>-MATNR = 1.
<LQUA>-WERKS = 1.

ENDLOOP.

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

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


*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-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LQUA-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LQUA-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LQUA-VBELN.
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_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
LQNUM TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
BESTQ TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
PLPOS TYPE STRING,
SKZUE TYPE STRING,
SKZUA TYPE STRING,
SKZSE TYPE STRING,
SKZSA TYPE STRING,
SKZSI TYPE STRING,
SPGRU TYPE STRING,
ZEUGN TYPE STRING,
BDATU TYPE STRING,
BZEIT TYPE STRING,
BTANR TYPE STRING,
BTAPS TYPE STRING,
EDATU TYPE STRING,
EZEIT TYPE STRING,
ADATU TYPE STRING,
AZEIT TYPE STRING,
ZDATU TYPE STRING,
WDATU TYPE STRING,
WENUM TYPE STRING,
WEPOS TYPE STRING,
LETYP TYPE STRING,
MEINS TYPE STRING,
GESME TYPE STRING,
VERME TYPE STRING,
EINME TYPE STRING,
AUSME TYPE STRING,
MGEWI TYPE STRING,
GEWEI TYPE STRING,
TBNUM TYPE STRING,
IVNUM TYPE STRING,
IVPOS TYPE STRING,
BETYP TYPE STRING,
BENUM TYPE STRING,
LENUM TYPE STRING,
QPLOS TYPE STRING,
VFDAT TYPE STRING,
QKAPV TYPE STRING,
KOBER TYPE STRING,
LGORT TYPE STRING,
VIRGO TYPE STRING,
TRAME TYPE STRING,
KZHUQ TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
IDATU TYPE STRING,
MSR_INSP_GUID TYPE STRING,
SGT_SCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LQUA_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_STR-MANDT sy-vline 
WA_LQUA_STR-LGNUM sy-vline 
WA_LQUA_STR-LQNUM sy-vline 
WA_LQUA_STR-MATNR sy-vline 
WA_LQUA_STR-WERKS sy-vline 
WA_LQUA_STR-CHARG sy-vline 
WA_LQUA_STR-BESTQ sy-vline 
WA_LQUA_STR-SOBKZ sy-vline 
WA_LQUA_STR-SONUM sy-vline 
WA_LQUA_STR-LGTYP sy-vline 
WA_LQUA_STR-LGPLA sy-vline 
WA_LQUA_STR-PLPOS sy-vline 
WA_LQUA_STR-SKZUE sy-vline 
WA_LQUA_STR-SKZUA sy-vline 
WA_LQUA_STR-SKZSE sy-vline 
WA_LQUA_STR-SKZSA sy-vline 
WA_LQUA_STR-SKZSI sy-vline 
WA_LQUA_STR-SPGRU sy-vline 
WA_LQUA_STR-ZEUGN sy-vline 
WA_LQUA_STR-BDATU sy-vline 
WA_LQUA_STR-BZEIT sy-vline 
WA_LQUA_STR-BTANR sy-vline 
WA_LQUA_STR-BTAPS sy-vline 
WA_LQUA_STR-EDATU sy-vline 
WA_LQUA_STR-EZEIT sy-vline 
WA_LQUA_STR-ADATU sy-vline 
WA_LQUA_STR-AZEIT sy-vline 
WA_LQUA_STR-ZDATU sy-vline 
WA_LQUA_STR-WDATU sy-vline 
WA_LQUA_STR-WENUM sy-vline 
WA_LQUA_STR-WEPOS sy-vline 
WA_LQUA_STR-LETYP sy-vline 
WA_LQUA_STR-MEINS sy-vline 
WA_LQUA_STR-GESME sy-vline 
WA_LQUA_STR-VERME sy-vline 
WA_LQUA_STR-EINME sy-vline 
WA_LQUA_STR-AUSME sy-vline 
WA_LQUA_STR-MGEWI sy-vline 
WA_LQUA_STR-GEWEI sy-vline 
WA_LQUA_STR-TBNUM sy-vline 
WA_LQUA_STR-IVNUM sy-vline 
WA_LQUA_STR-IVPOS sy-vline 
WA_LQUA_STR-BETYP sy-vline 
WA_LQUA_STR-BENUM sy-vline 
WA_LQUA_STR-LENUM sy-vline 
WA_LQUA_STR-QPLOS sy-vline 
WA_LQUA_STR-VFDAT sy-vline 
WA_LQUA_STR-QKAPV sy-vline 
WA_LQUA_STR-KOBER sy-vline 
WA_LQUA_STR-LGORT sy-vline 
WA_LQUA_STR-VIRGO sy-vline 
WA_LQUA_STR-TRAME sy-vline 
WA_LQUA_STR-KZHUQ sy-vline 
WA_LQUA_STR-VBELN sy-vline 
WA_LQUA_STR-POSNR sy-vline 
WA_LQUA_STR-IDATU sy-vline 
WA_LQUA_STR-MSR_INSP_GUID sy-vline 
WA_LQUA_STR-SGT_SCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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