ABAP Select data from SAP table LIRQI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LIRQI
*  INTO TABLE @DATA(IT_LIRQI2).
*--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_LIRQI INDEX 1 INTO DATA(WA_LIRQI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LIRQI>-LOCAT = 1.
<LIRQI>-ORGLV1DC = 1.
<LIRQI>-ORGLV2DC = 1.
<LIRQI>-ORGLV3DC = 1.
<LIRQI>-DOCIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LIRQI-ITREF, sy-vline,
  WA_LIRQI-RQITY, sy-vline,
  WA_LIRQI-RQACT, sy-vline,
  WA_LIRQI-PRSMD, sy-vline,
  WA_LIRQI-CNLFL, sy-vline,
  WA_LIRQI-HUNUMHUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LIRQI 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_LIRQI 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_LIRQI INTO WA_LIRQI.


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

*Conversion exit ALPHA, internal->external for field HUNUMHUD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LIRQI-HUNUMHUD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LIRQI-HUNUMHUD.
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_LIRQI_STR, 
LOCAT TYPE STRING,
ORGLV1DC TYPE STRING,
ORGLV2DC TYPE STRING,
ORGLV3DC TYPE STRING,
DOCIT TYPE STRING,
ITREF TYPE STRING,
RQITY TYPE STRING,
RQACT TYPE STRING,
PRSMD TYPE STRING,
CNLFL TYPE STRING,
HUNUMHUS TYPE STRING,
HUTYPHUS TYPE STRING,
HUNUMHUD TYPE STRING,
HUTYPHUD TYPE STRING,
RZONES TYPE STRING,
BINCXS TYPE STRING,
BINCYS TYPE STRING,
BINCZS TYPE STRING,
RNODES TYPE STRING,
RZONED TYPE STRING,
BINCXD TYPE STRING,
BINCYD TYPE STRING,
BINCZD TYPE STRING,
RNODED TYPE STRING,
LTRM_DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LIRQI_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_LIRQI_STR-LOCAT sy-vline 
WA_LIRQI_STR-ORGLV1DC sy-vline 
WA_LIRQI_STR-ORGLV2DC sy-vline 
WA_LIRQI_STR-ORGLV3DC sy-vline 
WA_LIRQI_STR-DOCIT sy-vline 
WA_LIRQI_STR-ITREF sy-vline 
WA_LIRQI_STR-RQITY sy-vline 
WA_LIRQI_STR-RQACT sy-vline 
WA_LIRQI_STR-PRSMD sy-vline 
WA_LIRQI_STR-CNLFL sy-vline 
WA_LIRQI_STR-HUNUMHUS sy-vline 
WA_LIRQI_STR-HUTYPHUS sy-vline 
WA_LIRQI_STR-HUNUMHUD sy-vline 
WA_LIRQI_STR-HUTYPHUD sy-vline 
WA_LIRQI_STR-RZONES sy-vline 
WA_LIRQI_STR-BINCXS sy-vline 
WA_LIRQI_STR-BINCYS sy-vline 
WA_LIRQI_STR-BINCZS sy-vline 
WA_LIRQI_STR-RNODES sy-vline 
WA_LIRQI_STR-RZONED sy-vline 
WA_LIRQI_STR-BINCXD sy-vline 
WA_LIRQI_STR-BINCYD sy-vline 
WA_LIRQI_STR-BINCZD sy-vline 
WA_LIRQI_STR-RNODED sy-vline 
WA_LIRQI_STR-LTRM_DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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