ABAP Select data from SAP table AIDLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AIDLOG
*  INTO TABLE @DATA(IT_AIDLOG2).
*--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_AIDLOG INDEX 1 INTO DATA(WA_AIDLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AIDLOG>-MANDT = 1.
<AIDLOG>-LOGSYS = 1.
<AIDLOG>-ACTYP = 1.
<AIDLOG>-DOCTY = 1.
<AIDLOG>-DOCNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AIDLOG-DOCITM, sy-vline,
  WA_AIDLOG-DOC_SEQUENCE, sy-vline,
  WA_AIDLOG-EPC1, sy-vline,
  WA_AIDLOG-EPC2, sy-vline,
  WA_AIDLOG-EXEC_STTS, sy-vline,
  WA_AIDLOG-REF_OBJCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AIDLOG 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_AIDLOG 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_AIDLOG INTO WA_AIDLOG.


*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.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-DOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCITM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-DOCITM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-DOCITM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_OBJCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-REF_OBJCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-REF_OBJCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRNT_OBJCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-PRNT_OBJCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-PRNT_OBJCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GTIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-GTIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-GTIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSABI, internal->external for field EDATE
CALL FUNCTION 'CONVERSION_EXIT_TSABI_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-EDATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-EDATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSABI, internal->external for field ADATE
CALL FUNCTION 'CONVERSION_EXIT_TSABI_OUTPUT'
  EXPORTING
    input =                      WA_AIDLOG-ADATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIDLOG-ADATE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_AIDLOG_STR, 
MANDT TYPE STRING,
LOGSYS TYPE STRING,
ACTYP TYPE STRING,
DOCTY TYPE STRING,
DOCNR TYPE STRING,
DOCITM TYPE STRING,
DOC_SEQUENCE TYPE STRING,
EPC1 TYPE STRING,
EPC2 TYPE STRING,
EXEC_STTS TYPE STRING,
REF_OBJCT TYPE STRING,
PRNT_OBJCT TYPE STRING,
SU_FLAG TYPE STRING,
GTIN TYPE STRING,
GTIN_VARIANT TYPE STRING,
READER TYPE STRING,
USERNAME TYPE STRING,
EDATE TYPE STRING,
ADATE TYPE STRING,
SRC_LCTN_PRNT TYPE STRING,
SRC_LCTN TYPE STRING,
DST_LCTN_PRNT TYPE STRING,
DST_LCTN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AIDLOG_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_AIDLOG_STR-MANDT sy-vline 
WA_AIDLOG_STR-LOGSYS sy-vline 
WA_AIDLOG_STR-ACTYP sy-vline 
WA_AIDLOG_STR-DOCTY sy-vline 
WA_AIDLOG_STR-DOCNR sy-vline 
WA_AIDLOG_STR-DOCITM sy-vline 
WA_AIDLOG_STR-DOC_SEQUENCE sy-vline 
WA_AIDLOG_STR-EPC1 sy-vline 
WA_AIDLOG_STR-EPC2 sy-vline 
WA_AIDLOG_STR-EXEC_STTS sy-vline 
WA_AIDLOG_STR-REF_OBJCT sy-vline 
WA_AIDLOG_STR-PRNT_OBJCT sy-vline 
WA_AIDLOG_STR-SU_FLAG sy-vline 
WA_AIDLOG_STR-GTIN sy-vline 
WA_AIDLOG_STR-GTIN_VARIANT sy-vline 
WA_AIDLOG_STR-READER sy-vline 
WA_AIDLOG_STR-USERNAME sy-vline 
WA_AIDLOG_STR-EDATE sy-vline 
WA_AIDLOG_STR-ADATE sy-vline 
WA_AIDLOG_STR-SRC_LCTN_PRNT sy-vline 
WA_AIDLOG_STR-SRC_LCTN sy-vline 
WA_AIDLOG_STR-DST_LCTN_PRNT sy-vline 
WA_AIDLOG_STR-DST_LCTN sy-vline      INTO ld_text SEPARATED BY SPACE.

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