ABAP Select data from SAP table SI_LFB1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SI_LFB1 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 SI_LFB1. 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 SI_LFB1 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_SI_LFB1 TYPE STANDARD TABLE OF SI_LFB1,
      WA_SI_LFB1 TYPE SI_LFB1,
      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: <SI_LFB1> TYPE SI_LFB1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SI_LFB1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SI_LFB1
  INTO TABLE IT_SI_LFB1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SI_LFB1
*  INTO TABLE @DATA(IT_SI_LFB12).
*--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_SI_LFB1 INDEX 1 INTO DATA(WA_SI_LFB12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SI_LFB1 ASSIGNING <SI_LFB1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SI_LFB1>-ERDAT = 1.
<SI_LFB1>-ERNAM = 1.
<SI_LFB1>-SPERR = 1.
<SI_LFB1>-LOEVM = 1.
<SI_LFB1>-ZUAWA = 1.

ENDLOOP.

LOOP AT IT_SI_LFB1 INTO WA_SI_LFB1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SI_LFB1-AKONT, sy-vline,
  WA_SI_LFB1-BEGRU, sy-vline,
  WA_SI_LFB1-VZSKZ, sy-vline,
  WA_SI_LFB1-ZWELS, sy-vline,
  WA_SI_LFB1-XVERR, sy-vline,
  WA_SI_LFB1-ZAHLS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SI_LFB1 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_SI_LFB1 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_SI_LFB1 INTO WA_SI_LFB1.


*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 AKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_LFB1-AKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_LFB1-AKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FDGRV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_LFB1-FDGRV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_LFB1-FDGRV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRZE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_LFB1-LNRZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_LFB1-LNRZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRZB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_LFB1-LNRZB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_LFB1-LNRZB.
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_SI_LFB1_STR, 
ERDAT TYPE STRING,
ERNAM TYPE STRING,
SPERR TYPE STRING,
LOEVM TYPE STRING,
ZUAWA TYPE STRING,
AKONT TYPE STRING,
BEGRU TYPE STRING,
VZSKZ TYPE STRING,
ZWELS TYPE STRING,
XVERR TYPE STRING,
ZAHLS TYPE STRING,
ZTERM TYPE STRING,
EIKTO TYPE STRING,
ZSABE TYPE STRING,
KVERM TYPE STRING,
FDGRV TYPE STRING,
BUSAB TYPE STRING,
LNRZE TYPE STRING,
LNRZB TYPE STRING,
ZINDT TYPE STRING,
ZINRT TYPE STRING,
DATLZ TYPE STRING,
XDEZV TYPE STRING,
WEBTR TYPE STRING,
KULTG TYPE STRING,
REPRF TYPE STRING,
TOGRU TYPE STRING,
HBKID TYPE STRING,
XPORE TYPE STRING,
QSZNR TYPE STRING,
QSZDT TYPE STRING,
QSSKZ TYPE STRING,
BLNKZ TYPE STRING,
MINDK TYPE STRING,
ALTKN TYPE STRING,
ZGRUP TYPE STRING,
MGRUP TYPE STRING,
UZAWE TYPE STRING,
QSREC TYPE STRING,
QSBGR TYPE STRING,
QLAND TYPE STRING,
XEDIP TYPE STRING,
FRGRP TYPE STRING,
TOGRR TYPE STRING,
TLFXS TYPE STRING,
INTAD TYPE STRING,
XLFZB TYPE STRING,
GUZTE TYPE STRING,
GRICD TYPE STRING,
GRIDT TYPE STRING,
XAUSZ TYPE STRING,
CERDT TYPE STRING,
CONFS TYPE STRING,
UPDAT TYPE STRING,
UPTIM TYPE STRING,
NODEL TYPE STRING,
TLFNS TYPE STRING,
AVSND TYPE STRING,
AD_HASH TYPE STRING,
CVP_XBLCK_B TYPE STRING,
CIIUCODE TYPE STRING,
PAYMENTCLEARINGGRPID TYPE STRING,
PAYTRSN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SI_LFB1_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_SI_LFB1_STR-ERDAT sy-vline 
WA_SI_LFB1_STR-ERNAM sy-vline 
WA_SI_LFB1_STR-SPERR sy-vline 
WA_SI_LFB1_STR-LOEVM sy-vline 
WA_SI_LFB1_STR-ZUAWA sy-vline 
WA_SI_LFB1_STR-AKONT sy-vline 
WA_SI_LFB1_STR-BEGRU sy-vline 
WA_SI_LFB1_STR-VZSKZ sy-vline 
WA_SI_LFB1_STR-ZWELS sy-vline 
WA_SI_LFB1_STR-XVERR sy-vline 
WA_SI_LFB1_STR-ZAHLS sy-vline 
WA_SI_LFB1_STR-ZTERM sy-vline 
WA_SI_LFB1_STR-EIKTO sy-vline 
WA_SI_LFB1_STR-ZSABE sy-vline 
WA_SI_LFB1_STR-KVERM sy-vline 
WA_SI_LFB1_STR-FDGRV sy-vline 
WA_SI_LFB1_STR-BUSAB sy-vline 
WA_SI_LFB1_STR-LNRZE sy-vline 
WA_SI_LFB1_STR-LNRZB sy-vline 
WA_SI_LFB1_STR-ZINDT sy-vline 
WA_SI_LFB1_STR-ZINRT sy-vline 
WA_SI_LFB1_STR-DATLZ sy-vline 
WA_SI_LFB1_STR-XDEZV sy-vline 
WA_SI_LFB1_STR-WEBTR sy-vline 
WA_SI_LFB1_STR-KULTG sy-vline 
WA_SI_LFB1_STR-REPRF sy-vline 
WA_SI_LFB1_STR-TOGRU sy-vline 
WA_SI_LFB1_STR-HBKID sy-vline 
WA_SI_LFB1_STR-XPORE sy-vline 
WA_SI_LFB1_STR-QSZNR sy-vline 
WA_SI_LFB1_STR-QSZDT sy-vline 
WA_SI_LFB1_STR-QSSKZ sy-vline 
WA_SI_LFB1_STR-BLNKZ sy-vline 
WA_SI_LFB1_STR-MINDK sy-vline 
WA_SI_LFB1_STR-ALTKN sy-vline 
WA_SI_LFB1_STR-ZGRUP sy-vline 
WA_SI_LFB1_STR-MGRUP sy-vline 
WA_SI_LFB1_STR-UZAWE sy-vline 
WA_SI_LFB1_STR-QSREC sy-vline 
WA_SI_LFB1_STR-QSBGR sy-vline 
WA_SI_LFB1_STR-QLAND sy-vline 
WA_SI_LFB1_STR-XEDIP sy-vline 
WA_SI_LFB1_STR-FRGRP sy-vline 
WA_SI_LFB1_STR-TOGRR sy-vline 
WA_SI_LFB1_STR-TLFXS sy-vline 
WA_SI_LFB1_STR-INTAD sy-vline 
WA_SI_LFB1_STR-XLFZB sy-vline 
WA_SI_LFB1_STR-GUZTE sy-vline 
WA_SI_LFB1_STR-GRICD sy-vline 
WA_SI_LFB1_STR-GRIDT sy-vline 
WA_SI_LFB1_STR-XAUSZ sy-vline 
WA_SI_LFB1_STR-CERDT sy-vline 
WA_SI_LFB1_STR-CONFS sy-vline 
WA_SI_LFB1_STR-UPDAT sy-vline 
WA_SI_LFB1_STR-UPTIM sy-vline 
WA_SI_LFB1_STR-NODEL sy-vline 
WA_SI_LFB1_STR-TLFNS sy-vline 
WA_SI_LFB1_STR-AVSND sy-vline 
WA_SI_LFB1_STR-AD_HASH sy-vline 
WA_SI_LFB1_STR-CVP_XBLCK_B sy-vline 
WA_SI_LFB1_STR-CIIUCODE sy-vline 
WA_SI_LFB1_STR-PAYMENTCLEARINGGRPID sy-vline 
WA_SI_LFB1_STR-PAYTRSN sy-vline      INTO ld_text SEPARATED BY SPACE.

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