ABAP Select data from SAP table LSACTIVITY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSACTIVITY
*  INTO TABLE @DATA(IT_LSACTIVITY2).
*--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_LSACTIVITY INDEX 1 INTO DATA(WA_LSACTIVITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSACTIVITY>-PLVAR = 1.
<LSACTIVITY>-EVEID = 1.
<LSACTIVITY>-EVSHT = 1.
<LSACTIVITY>-EVSTX = 1.
<LSACTIVITY>-EVBEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSACTIVITY-EVEND, sy-vline,
  WA_LSACTIVITY-EVLNG, sy-vline,
  WA_LSACTIVITY-LOCID, sy-vline,
  WA_LSACTIVITY-LOCTX, sy-vline,
  WA_LSACTIVITY-ISTAT, sy-vline,
  WA_LSACTIVITY-EXTRN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSACTIVITY 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_LSACTIVITY 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_LSACTIVITY INTO WA_LSACTIVITY.


*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_LSACTIVITY_STR, 
PLVAR TYPE STRING,
EVEID TYPE STRING,
EVSHT TYPE STRING,
EVSTX TYPE STRING,
EVBEG TYPE STRING,
EVEND TYPE STRING,
EVLNG TYPE STRING,
LOCID TYPE STRING,
LOCTX TYPE STRING,
ISTAT TYPE STRING,
EXTRN TYPE STRING,
PRIOX TYPE STRING,
MANZL TYPE STRING,
BUDAT TYPE STRING,
SEQNR TYPE STRING,
KKOST TYPE STRING,
KWAER TYPE STRING,
DELET TYPE STRING,
LOCKM TYPE STRING,
HISTO TYPE STRING,
TFORM TYPE STRING,
OTYPE TYPE STRING,
TPARTDOCNO TYPE STRING,
TRTTY TYPE STRING,
TRTID TYPE STRING,
FOLLOW_UP TYPE STRING,
PASSED TYPE STRING,
LEARN_STATUS TYPE STRING,
FSBEG TYPE STRING,
FSEND TYPE STRING,
EBO_TOTAL TYPE STRING,
EBO_PASSED TYPE STRING,
EBO_PERCENT TYPE STRING,
LU_TOTAL TYPE STRING,
LU_PASSED TYPE STRING,
LU_PERCENT TYPE STRING,
TIMECRS TYPE STRING,
PROGRESS TYPE STRING,
LORULES TYPE STRING,
LOSUCCS TYPE STRING,
EBORULES TYPE STRING,
EBOSUCCS TYPE STRING,
TMP_PASSED TYPE STRING,
ACHIEVEMENT TYPE STRING,
TESTSCORE TYPE STRING,
TESTSCOREMAX TYPE STRING,
TESTSCOREPERC TYPE STRING,
TESTSCORECUTOFF TYPE STRING,
MAX_ACCESS TYPE STRING,
ACCESS_COUNTER TYPE STRING,
CURRTYPE TYPE STRING,
CURRID TYPE STRING,
CURRSTEXT TYPE STRING,
WAITLIST TYPE STRING,
WFACTION TYPE STRING,
STARTTIME TYPE STRING,
ENDTIME TYPE STRING,
STARTROOMID TYPE STRING,
STARTROOM TYPE STRING,
BUILDING TYPE STRING,
LSPKEY TYPE STRING,
EXTID TYPE STRING,
CE_PERNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSACTIVITY_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_LSACTIVITY_STR-PLVAR sy-vline 
WA_LSACTIVITY_STR-EVEID sy-vline 
WA_LSACTIVITY_STR-EVSHT sy-vline 
WA_LSACTIVITY_STR-EVSTX sy-vline 
WA_LSACTIVITY_STR-EVBEG sy-vline 
WA_LSACTIVITY_STR-EVEND sy-vline 
WA_LSACTIVITY_STR-EVLNG sy-vline 
WA_LSACTIVITY_STR-LOCID sy-vline 
WA_LSACTIVITY_STR-LOCTX sy-vline 
WA_LSACTIVITY_STR-ISTAT sy-vline 
WA_LSACTIVITY_STR-EXTRN sy-vline 
WA_LSACTIVITY_STR-PRIOX sy-vline 
WA_LSACTIVITY_STR-MANZL sy-vline 
WA_LSACTIVITY_STR-BUDAT sy-vline 
WA_LSACTIVITY_STR-SEQNR sy-vline 
WA_LSACTIVITY_STR-KKOST sy-vline 
WA_LSACTIVITY_STR-KWAER sy-vline 
WA_LSACTIVITY_STR-DELET sy-vline 
WA_LSACTIVITY_STR-LOCKM sy-vline 
WA_LSACTIVITY_STR-HISTO sy-vline 
WA_LSACTIVITY_STR-TFORM sy-vline 
WA_LSACTIVITY_STR-OTYPE sy-vline 
WA_LSACTIVITY_STR-TPARTDOCNO sy-vline 
WA_LSACTIVITY_STR-TRTTY sy-vline 
WA_LSACTIVITY_STR-TRTID sy-vline 
WA_LSACTIVITY_STR-FOLLOW_UP sy-vline 
WA_LSACTIVITY_STR-PASSED sy-vline 
WA_LSACTIVITY_STR-LEARN_STATUS sy-vline 
WA_LSACTIVITY_STR-FSBEG sy-vline 
WA_LSACTIVITY_STR-FSEND sy-vline 
WA_LSACTIVITY_STR-EBO_TOTAL sy-vline 
WA_LSACTIVITY_STR-EBO_PASSED sy-vline 
WA_LSACTIVITY_STR-EBO_PERCENT sy-vline 
WA_LSACTIVITY_STR-LU_TOTAL sy-vline 
WA_LSACTIVITY_STR-LU_PASSED sy-vline 
WA_LSACTIVITY_STR-LU_PERCENT sy-vline 
WA_LSACTIVITY_STR-TIMECRS sy-vline 
WA_LSACTIVITY_STR-PROGRESS sy-vline 
WA_LSACTIVITY_STR-LORULES sy-vline 
WA_LSACTIVITY_STR-LOSUCCS sy-vline 
WA_LSACTIVITY_STR-EBORULES sy-vline 
WA_LSACTIVITY_STR-EBOSUCCS sy-vline 
WA_LSACTIVITY_STR-TMP_PASSED sy-vline 
WA_LSACTIVITY_STR-ACHIEVEMENT sy-vline 
WA_LSACTIVITY_STR-TESTSCORE sy-vline 
WA_LSACTIVITY_STR-TESTSCOREMAX sy-vline 
WA_LSACTIVITY_STR-TESTSCOREPERC sy-vline 
WA_LSACTIVITY_STR-TESTSCORECUTOFF sy-vline 
WA_LSACTIVITY_STR-MAX_ACCESS sy-vline 
WA_LSACTIVITY_STR-ACCESS_COUNTER sy-vline 
WA_LSACTIVITY_STR-CURRTYPE sy-vline 
WA_LSACTIVITY_STR-CURRID sy-vline 
WA_LSACTIVITY_STR-CURRSTEXT sy-vline 
WA_LSACTIVITY_STR-WAITLIST sy-vline 
WA_LSACTIVITY_STR-WFACTION sy-vline 
WA_LSACTIVITY_STR-STARTTIME sy-vline 
WA_LSACTIVITY_STR-ENDTIME sy-vline 
WA_LSACTIVITY_STR-STARTROOMID sy-vline 
WA_LSACTIVITY_STR-STARTROOM sy-vline 
WA_LSACTIVITY_STR-BUILDING sy-vline 
WA_LSACTIVITY_STR-LSPKEY sy-vline 
WA_LSACTIVITY_STR-EXTID sy-vline 
WA_LSACTIVITY_STR-CE_PERNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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