ABAP Select data from SAP table PIQDB_NL_OUTLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQDB_NL_OUTLOG
*  INTO TABLE @DATA(IT_PIQDB_NL_OUTLOG2).
*--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_PIQDB_NL_OUTLOG INDEX 1 INTO DATA(WA_PIQDB_NL_OUTLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQDB_NL_OUTLOG>-MANDT = 1.
<PIQDB_NL_OUTLOG>-STUNUMBER = 1.
<PIQDB_NL_OUTLOG>-SC_OBJID = 1.
<PIQDB_NL_OUTLOG>-ADM_AYEAR = 1.
<PIQDB_NL_OUTLOG>-ADM_PERID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQDB_NL_OUTLOG-MSG_NUMBER, sy-vline,
  WA_PIQDB_NL_OUTLOG-TRANS_GUID, sy-vline,
  WA_PIQDB_NL_OUTLOG-PREEDUCATION, sy-vline,
  WA_PIQDB_NL_OUTLOG-ADDR_TYPE, sy-vline,
  WA_PIQDB_NL_OUTLOG-ADM_GUID, sy-vline,
  WA_PIQDB_NL_OUTLOG-SENT_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQDB_NL_OUTLOG 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_PIQDB_NL_OUTLOG 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_PIQDB_NL_OUTLOG INTO WA_PIQDB_NL_OUTLOG.


*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 PIQST, internal->external for field STUNUMBER
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQDB_NL_OUTLOG-STUNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQDB_NL_OUTLOG-STUNUMBER.
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_PIQDB_NL_OUTLOG_STR, 
MANDT TYPE STRING,
STUNUMBER TYPE STRING,
SC_OBJID TYPE STRING,
ADM_AYEAR TYPE STRING,
ADM_PERID TYPE STRING,
MSG_NUMBER TYPE STRING,
TRANS_GUID TYPE STRING,
PREEDUCATION TYPE STRING,
ADDR_TYPE TYPE STRING,
ADM_GUID TYPE STRING,
SENT_STATUS TYPE STRING,
STUDIELINKINDEX TYPE STRING,
ACCEPTED TYPE STRING,
ERRORCODE TYPE STRING,
ERRORTEXT TYPE STRING,
USERNAME TYPE STRING,
TIMESTAMP TYPE STRING,
EVENT_MSG31 TYPE STRING,
RECTIFIED_STATUS TYPE STRING,
SLVERSION TYPE STRING,
VDATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQDB_NL_OUTLOG_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_PIQDB_NL_OUTLOG_STR-MANDT sy-vline 
WA_PIQDB_NL_OUTLOG_STR-STUNUMBER sy-vline 
WA_PIQDB_NL_OUTLOG_STR-SC_OBJID sy-vline 
WA_PIQDB_NL_OUTLOG_STR-ADM_AYEAR sy-vline 
WA_PIQDB_NL_OUTLOG_STR-ADM_PERID sy-vline 
WA_PIQDB_NL_OUTLOG_STR-MSG_NUMBER sy-vline 
WA_PIQDB_NL_OUTLOG_STR-TRANS_GUID sy-vline 
WA_PIQDB_NL_OUTLOG_STR-PREEDUCATION sy-vline 
WA_PIQDB_NL_OUTLOG_STR-ADDR_TYPE sy-vline 
WA_PIQDB_NL_OUTLOG_STR-ADM_GUID sy-vline 
WA_PIQDB_NL_OUTLOG_STR-SENT_STATUS sy-vline 
WA_PIQDB_NL_OUTLOG_STR-STUDIELINKINDEX sy-vline 
WA_PIQDB_NL_OUTLOG_STR-ACCEPTED sy-vline 
WA_PIQDB_NL_OUTLOG_STR-ERRORCODE sy-vline 
WA_PIQDB_NL_OUTLOG_STR-ERRORTEXT sy-vline 
WA_PIQDB_NL_OUTLOG_STR-USERNAME sy-vline 
WA_PIQDB_NL_OUTLOG_STR-TIMESTAMP sy-vline 
WA_PIQDB_NL_OUTLOG_STR-EVENT_MSG31 sy-vline 
WA_PIQDB_NL_OUTLOG_STR-RECTIFIED_STATUS sy-vline 
WA_PIQDB_NL_OUTLOG_STR-SLVERSION sy-vline 
WA_PIQDB_NL_OUTLOG_STR-VDATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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