ABAP Select data from SAP table DOCR_LOG_RECORD 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 DOCR_LOG_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 DOCR_LOG_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 DOCR_LOG_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_DOCR_LOG_RECORD TYPE STANDARD TABLE OF DOCR_LOG_RECORD,
      WA_DOCR_LOG_RECORD TYPE DOCR_LOG_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: <DOCR_LOG_RECORD> TYPE DOCR_LOG_RECORD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DOCR_LOG_RECORD
*  INTO TABLE @DATA(IT_DOCR_LOG_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_DOCR_LOG_RECORD INDEX 1 INTO DATA(WA_DOCR_LOG_RECORD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DOCR_LOG_RECORD>-LOG_ID = 1.
<DOCR_LOG_RECORD>-TIMESTAMP = 1.
<DOCR_LOG_RECORD>-RECORD_COUNT = 1.
<DOCR_LOG_RECORD>-HOSTNAME = 1.
<DOCR_LOG_RECORD>-APPSERVER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DOCR_LOG_RECORD-TECH_LAYER, sy-vline,
  WA_DOCR_LOG_RECORD-COMPONENT, sy-vline,
  WA_DOCR_LOG_RECORD-SUB_COMPONENT, sy-vline,
  WA_DOCR_LOG_RECORD-PROG_NAME, sy-vline,
  WA_DOCR_LOG_RECORD-PROG_INCLUDE, sy-vline,
  WA_DOCR_LOG_RECORD-PROG_LINE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DOCR_LOG_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_DOCR_LOG_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_DOCR_LOG_RECORD INTO WA_DOCR_LOG_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_DOCR_LOG_RECORD_STR, 
LOG_ID TYPE STRING,
TIMESTAMP TYPE STRING,
RECORD_COUNT TYPE STRING,
HOSTNAME TYPE STRING,
APPSERVER TYPE STRING,
TECH_LAYER TYPE STRING,
COMPONENT TYPE STRING,
SUB_COMPONENT TYPE STRING,
PROG_NAME TYPE STRING,
PROG_INCLUDE TYPE STRING,
PROG_LINE TYPE STRING,
SEVERITY TYPE STRING,
MESSAGE TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
DATA_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DOCR_LOG_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_DOCR_LOG_RECORD_STR-LOG_ID sy-vline 
WA_DOCR_LOG_RECORD_STR-TIMESTAMP sy-vline 
WA_DOCR_LOG_RECORD_STR-RECORD_COUNT sy-vline 
WA_DOCR_LOG_RECORD_STR-HOSTNAME sy-vline 
WA_DOCR_LOG_RECORD_STR-APPSERVER sy-vline 
WA_DOCR_LOG_RECORD_STR-TECH_LAYER sy-vline 
WA_DOCR_LOG_RECORD_STR-COMPONENT sy-vline 
WA_DOCR_LOG_RECORD_STR-SUB_COMPONENT sy-vline 
WA_DOCR_LOG_RECORD_STR-PROG_NAME sy-vline 
WA_DOCR_LOG_RECORD_STR-PROG_INCLUDE sy-vline 
WA_DOCR_LOG_RECORD_STR-PROG_LINE sy-vline 
WA_DOCR_LOG_RECORD_STR-SEVERITY sy-vline 
WA_DOCR_LOG_RECORD_STR-MESSAGE sy-vline 
WA_DOCR_LOG_RECORD_STR-MSGID sy-vline 
WA_DOCR_LOG_RECORD_STR-MSGTY sy-vline 
WA_DOCR_LOG_RECORD_STR-MSGNO sy-vline 
WA_DOCR_LOG_RECORD_STR-MSGV1 sy-vline 
WA_DOCR_LOG_RECORD_STR-MSGV2 sy-vline 
WA_DOCR_LOG_RECORD_STR-MSGV3 sy-vline 
WA_DOCR_LOG_RECORD_STR-MSGV4 sy-vline 
WA_DOCR_LOG_RECORD_STR-DATA_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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