ABAP Select data from SAP table APS_SMG_APPLOG_RECORD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APS_SMG_APPLOG_RECORD
*  INTO TABLE @DATA(IT_APS_SMG_APPLOG_RECORD2).
*--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_APS_SMG_APPLOG_RECORD INDEX 1 INTO DATA(WA_APS_SMG_APPLOG_RECORD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APS_SMG_APPLOG_RECORD>-CLIENT_CRE = 1.
<APS_SMG_APPLOG_RECORD>-LOGNUMBER = 1.
<APS_SMG_APPLOG_RECORD>-OBJECT = 1.
<APS_SMG_APPLOG_RECORD>-SUBOBJECT = 1.
<APS_SMG_APPLOG_RECORD>-EXTNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APS_SMG_APPLOG_RECORD-ALDATE, sy-vline,
  WA_APS_SMG_APPLOG_RECORD-ALTIME, sy-vline,
  WA_APS_SMG_APPLOG_RECORD-ALUSER, sy-vline,
  WA_APS_SMG_APPLOG_RECORD-ALTCODE, sy-vline,
  WA_APS_SMG_APPLOG_RECORD-ALPROG, sy-vline,
  WA_APS_SMG_APPLOG_RECORD-ALMODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APS_SMG_APPLOG_RECORD 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_APS_SMG_APPLOG_RECORD 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_APS_SMG_APPLOG_RECORD INTO WA_APS_SMG_APPLOG_RECORD.


*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_APS_SMG_APPLOG_RECORD_STR, 
CLIENT_CRE TYPE STRING,
LOGNUMBER TYPE STRING,
OBJECT TYPE STRING,
SUBOBJECT TYPE STRING,
EXTNUMBER TYPE STRING,
ALDATE TYPE STRING,
ALTIME TYPE STRING,
ALUSER TYPE STRING,
ALTCODE TYPE STRING,
ALPROG TYPE STRING,
ALMODE TYPE STRING,
SEVERITY TYPE STRING,
MESSAGE TYPE STRING,
LOG_MESSAGES TYPE STRING,
MESSAGE_DETAILS TYPE STRING,
UTC_FROM TYPE STRING,
UTC_TO TYPE STRING,
MSG_ID TYPE STRING,
MSG_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APS_SMG_APPLOG_RECORD_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_APS_SMG_APPLOG_RECORD_STR-CLIENT_CRE sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-LOGNUMBER sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-OBJECT sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-SUBOBJECT sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-EXTNUMBER sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-ALDATE sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-ALTIME sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-ALUSER sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-ALTCODE sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-ALPROG sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-ALMODE sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-SEVERITY sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-MESSAGE sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-LOG_MESSAGES sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-MESSAGE_DETAILS sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-UTC_FROM sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-UTC_TO sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-MSG_ID sy-vline 
WA_APS_SMG_APPLOG_RECORD_STR-MSG_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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