ABAP Select data from SAP table LL01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LL01 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 LL01. 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 LL01 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_LL01 TYPE STANDARD TABLE OF LL01,
      WA_LL01 TYPE LL01,
      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: <LL01> TYPE LL01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LL01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LL01
  INTO TABLE IT_LL01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LL01
*  INTO TABLE @DATA(IT_LL012).
*--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_LL01 INDEX 1 INTO DATA(WA_LL012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LL01 ASSIGNING <LL01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LL01>-MANDT = 1.
<LL01>-LGNUM = 1.
<LL01>-LOBID = 1.
<LL01>-TANUM = 1.
<LL01>-TAPOS = 1.

ENDLOOP.

LOOP AT IT_LL01 INTO WA_LL01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LL01-BWLVS, sy-vline,
  WA_LL01-VLTYP, sy-vline,
  WA_LL01-NLTYP, sy-vline,
  WA_LL01-EDATU, sy-vline,
  WA_LL01-EZEIT, sy-vline,
  WA_LL01-BNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LL01 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_LL01 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_LL01 INTO WA_LL01.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_LL01_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
LOBID TYPE STRING,
TANUM TYPE STRING,
TAPOS TYPE STRING,
BWLVS TYPE STRING,
VLTYP TYPE STRING,
NLTYP TYPE STRING,
EDATU TYPE STRING,
EZEIT TYPE STRING,
BNAME TYPE STRING,
BDATU TYPE STRING,
BZEIT TYPE STRING,
STATU TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
TEXT4 TYPE STRING,
TEXT5 TYPE STRING,
AKT01 TYPE STRING,
AKT02 TYPE STRING,
AKT03 TYPE STRING,
AKT04 TYPE STRING,
AKT05 TYPE STRING,
AKT06 TYPE STRING,
AKT07 TYPE STRING,
AKT08 TYPE STRING,
AKT09 TYPE STRING,
AKT10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LL01_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_LL01_STR-MANDT sy-vline 
WA_LL01_STR-LGNUM sy-vline 
WA_LL01_STR-LOBID sy-vline 
WA_LL01_STR-TANUM sy-vline 
WA_LL01_STR-TAPOS sy-vline 
WA_LL01_STR-BWLVS sy-vline 
WA_LL01_STR-VLTYP sy-vline 
WA_LL01_STR-NLTYP sy-vline 
WA_LL01_STR-EDATU sy-vline 
WA_LL01_STR-EZEIT sy-vline 
WA_LL01_STR-BNAME sy-vline 
WA_LL01_STR-BDATU sy-vline 
WA_LL01_STR-BZEIT sy-vline 
WA_LL01_STR-STATU sy-vline 
WA_LL01_STR-TEXT1 sy-vline 
WA_LL01_STR-TEXT2 sy-vline 
WA_LL01_STR-TEXT3 sy-vline 
WA_LL01_STR-TEXT4 sy-vline 
WA_LL01_STR-TEXT5 sy-vline 
WA_LL01_STR-AKT01 sy-vline 
WA_LL01_STR-AKT02 sy-vline 
WA_LL01_STR-AKT03 sy-vline 
WA_LL01_STR-AKT04 sy-vline 
WA_LL01_STR-AKT05 sy-vline 
WA_LL01_STR-AKT06 sy-vline 
WA_LL01_STR-AKT07 sy-vline 
WA_LL01_STR-AKT08 sy-vline 
WA_LL01_STR-AKT09 sy-vline 
WA_LL01_STR-AKT10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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