ABAP Select data from SAP table /AIF/S_LOG into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP /AIF/S_LOG 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 /AIF/S_LOG. 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 /AIF/S_LOG 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_/AIF/S_LOG TYPE STANDARD TABLE OF /AIF/S_LOG,
      WA_/AIF/S_LOG TYPE /AIF/S_LOG,
      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: </AIF/S_LOG> TYPE /AIF/S_LOG.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /AIF/S_LOG
  INTO TABLE IT_/AIF/S_LOG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /AIF/S_LOG
*  INTO TABLE @DATA(IT_/AIF/S_LOG2).
*--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_/AIF/S_LOG INDEX 1 INTO DATA(WA_/AIF/S_LOG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/AIF/S_LOG ASSIGNING </AIF/S_LOG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</AIF/S_LOG>-LOGNUMBER = 1.
</AIF/S_LOG>-EXTNUMBER = 1.
</AIF/S_LOG>-OBJECT = 1.
</AIF/S_LOG>-SUBOBJECT = 1.
</AIF/S_LOG>-ALDATE = 1.

ENDLOOP.

LOOP AT IT_/AIF/S_LOG INTO WA_/AIF/S_LOG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/AIF/S_LOG-ALTIME, sy-vline,
  WA_/AIF/S_LOG-ALUSER, sy-vline,
  WA_/AIF/S_LOG-ALTCODE, sy-vline,
  WA_/AIF/S_LOG-ALPROG, sy-vline,
  WA_/AIF/S_LOG-ALMODE, sy-vline,
  WA_/AIF/S_LOG-ALCHDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/AIF/S_LOG 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_/AIF/S_LOG 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_/AIF/S_LOG INTO WA_/AIF/S_LOG.


*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_/AIF/S_LOG_STR, 
LOGNUMBER TYPE STRING,
EXTNUMBER TYPE STRING,
OBJECT TYPE STRING,
SUBOBJECT TYPE STRING,
ALDATE TYPE STRING,
ALTIME TYPE STRING,
ALUSER TYPE STRING,
ALTCODE TYPE STRING,
ALPROG TYPE STRING,
ALMODE TYPE STRING,
ALCHDATE TYPE STRING,
ALCHTIME TYPE STRING,
ALCHUSER TYPE STRING,
ALDATE_DEL TYPE STRING,
DEL_BEFORE TYPE STRING,
ALSTATE TYPE STRING,
CONTEXT TYPE STRING,
TABNAME TYPE STRING,
VALUE TYPE STRING,
PARAMS TYPE STRING,
T_PAR TYPE STRING,
CALLBACK TYPE STRING,
USEREXITP TYPE STRING,
USEREXITF TYPE STRING,
USEREXITT TYPE STRING,
ALTEXT TYPE STRING,
MSG_CNT_AL TYPE STRING,
MSG_CNT_A TYPE STRING,
MSG_CNT_E TYPE STRING,
MSG_CNT_W TYPE STRING,
MSG_CNT_I TYPE STRING,
MSG_CNT_S TYPE STRING,
MSG_MAX_PC TYPE STRING,
MSG_CNT_P1 TYPE STRING,
MSG_CNT_P2 TYPE STRING,
MSG_CNT_P3 TYPE STRING,
MSG_CNT_P4 TYPE STRING,
OBJECT_TEXT TYPE STRING,
SUBOBJECT_TEXT TYPE STRING,
LOG_DETAILS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/AIF/S_LOG_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_/AIF/S_LOG_STR-LOGNUMBER sy-vline 
WA_/AIF/S_LOG_STR-EXTNUMBER sy-vline 
WA_/AIF/S_LOG_STR-OBJECT sy-vline 
WA_/AIF/S_LOG_STR-SUBOBJECT sy-vline 
WA_/AIF/S_LOG_STR-ALDATE sy-vline 
WA_/AIF/S_LOG_STR-ALTIME sy-vline 
WA_/AIF/S_LOG_STR-ALUSER sy-vline 
WA_/AIF/S_LOG_STR-ALTCODE sy-vline 
WA_/AIF/S_LOG_STR-ALPROG sy-vline 
WA_/AIF/S_LOG_STR-ALMODE sy-vline 
WA_/AIF/S_LOG_STR-ALCHDATE sy-vline 
WA_/AIF/S_LOG_STR-ALCHTIME sy-vline 
WA_/AIF/S_LOG_STR-ALCHUSER sy-vline 
WA_/AIF/S_LOG_STR-ALDATE_DEL sy-vline 
WA_/AIF/S_LOG_STR-DEL_BEFORE sy-vline 
WA_/AIF/S_LOG_STR-ALSTATE sy-vline 
WA_/AIF/S_LOG_STR-CONTEXT sy-vline 
WA_/AIF/S_LOG_STR-TABNAME sy-vline 
WA_/AIF/S_LOG_STR-VALUE sy-vline 
WA_/AIF/S_LOG_STR-PARAMS sy-vline 
WA_/AIF/S_LOG_STR-T_PAR sy-vline 
WA_/AIF/S_LOG_STR-CALLBACK sy-vline 
WA_/AIF/S_LOG_STR-USEREXITP sy-vline 
WA_/AIF/S_LOG_STR-USEREXITF sy-vline 
WA_/AIF/S_LOG_STR-USEREXITT sy-vline 
WA_/AIF/S_LOG_STR-ALTEXT sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_AL sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_A sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_E sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_W sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_I sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_S sy-vline 
WA_/AIF/S_LOG_STR-MSG_MAX_PC sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_P1 sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_P2 sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_P3 sy-vline 
WA_/AIF/S_LOG_STR-MSG_CNT_P4 sy-vline 
WA_/AIF/S_LOG_STR-OBJECT_TEXT sy-vline 
WA_/AIF/S_LOG_STR-SUBOBJECT_TEXT sy-vline 
WA_/AIF/S_LOG_STR-LOG_DETAILS sy-vline      INTO ld_text SEPARATED BY SPACE.

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