ABAP Select data from SAP table ECLOG_AIDX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECLOG_AIDX
*  INTO TABLE @DATA(IT_ECLOG_AIDX2).
*--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_ECLOG_AIDX INDEX 1 INTO DATA(WA_ECLOG_AIDX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECLOG_AIDX>-LOGID = 1.
<ECLOG_AIDX>-FUNC = 1.
<ECLOG_AIDX>-OBJECT = 1.
<ECLOG_AIDX>-STARTUSER = 1.
<ECLOG_AIDX>-STARTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECLOG_AIDX-STARTTIME, sy-vline,
  WA_ECLOG_AIDX-EXPIRES, sy-vline,
  WA_ECLOG_AIDX-OBJTEXT, sy-vline,
  WA_ECLOG_AIDX-ARCH_FLAG, sy-vline,
  WA_ECLOG_AIDX-AOBJECT_ID, sy-vline,
  WA_ECLOG_AIDX-ARCHIVEKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECLOG_AIDX 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_ECLOG_AIDX 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_ECLOG_AIDX INTO WA_ECLOG_AIDX.


*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_ECLOG_AIDX_STR, 
LOGID TYPE STRING,
FUNC TYPE STRING,
OBJECT TYPE STRING,
STARTUSER TYPE STRING,
STARTDATE TYPE STRING,
STARTTIME TYPE STRING,
EXPIRES TYPE STRING,
OBJTEXT TYPE STRING,
ARCH_FLAG TYPE STRING,
AOBJECT_ID TYPE STRING,
ARCHIVEKEY TYPE STRING,
AOFFSET TYPE STRING,
ENDDATE TYPE STRING,
ENDTIME TYPE STRING,
STATUS TYPE STRING,
ANZABL TYPE STRING,
ANZPOS TYPE STRING,
ANZERR TYPE STRING,
ANZINA TYPE STRING,
BISABL TYPE STRING,
VALID TYPE STRING,
SOFTKOMP TYPE STRING,
TESTSYSTEM TYPE STRING,
CALL_TYPE TYPE STRING,
CALLING_OBJ_DESC TYPE STRING,
CALLER_STARTDATE TYPE STRING,
CALLER_STARTTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECLOG_AIDX_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_ECLOG_AIDX_STR-LOGID sy-vline 
WA_ECLOG_AIDX_STR-FUNC sy-vline 
WA_ECLOG_AIDX_STR-OBJECT sy-vline 
WA_ECLOG_AIDX_STR-STARTUSER sy-vline 
WA_ECLOG_AIDX_STR-STARTDATE sy-vline 
WA_ECLOG_AIDX_STR-STARTTIME sy-vline 
WA_ECLOG_AIDX_STR-EXPIRES sy-vline 
WA_ECLOG_AIDX_STR-OBJTEXT sy-vline 
WA_ECLOG_AIDX_STR-ARCH_FLAG sy-vline 
WA_ECLOG_AIDX_STR-AOBJECT_ID sy-vline 
WA_ECLOG_AIDX_STR-ARCHIVEKEY sy-vline 
WA_ECLOG_AIDX_STR-AOFFSET sy-vline 
WA_ECLOG_AIDX_STR-ENDDATE sy-vline 
WA_ECLOG_AIDX_STR-ENDTIME sy-vline 
WA_ECLOG_AIDX_STR-STATUS sy-vline 
WA_ECLOG_AIDX_STR-ANZABL sy-vline 
WA_ECLOG_AIDX_STR-ANZPOS sy-vline 
WA_ECLOG_AIDX_STR-ANZERR sy-vline 
WA_ECLOG_AIDX_STR-ANZINA sy-vline 
WA_ECLOG_AIDX_STR-BISABL sy-vline 
WA_ECLOG_AIDX_STR-VALID sy-vline 
WA_ECLOG_AIDX_STR-SOFTKOMP sy-vline 
WA_ECLOG_AIDX_STR-TESTSYSTEM sy-vline 
WA_ECLOG_AIDX_STR-CALL_TYPE sy-vline 
WA_ECLOG_AIDX_STR-CALLING_OBJ_DESC sy-vline 
WA_ECLOG_AIDX_STR-CALLER_STARTDATE sy-vline 
WA_ECLOG_AIDX_STR-CALLER_STARTTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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