ABAP Select data from SAP table DB6LW_PARTICIPANT into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6LW_PARTICIPANT 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 DB6LW_PARTICIPANT. 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 DB6LW_PARTICIPANT 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_DB6LW_PARTICIPANT TYPE STANDARD TABLE OF DB6LW_PARTICIPANT,
      WA_DB6LW_PARTICIPANT TYPE DB6LW_PARTICIPANT,
      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: <DB6LW_PARTICIPANT> TYPE DB6LW_PARTICIPANT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6LW_PARTICIPANT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6LW_PARTICIPANT
  INTO TABLE IT_DB6LW_PARTICIPANT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6LW_PARTICIPANT
*  INTO TABLE @DATA(IT_DB6LW_PARTICIPANT2).
*--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_DB6LW_PARTICIPANT INDEX 1 INTO DATA(WA_DB6LW_PARTICIPANT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6LW_PARTICIPANT ASSIGNING <DB6LW_PARTICIPANT>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6LW_PARTICIPANT>-XMLID = 1.
<DB6LW_PARTICIPANT>-PARTICIPANT_NO = 1.
<DB6LW_PARTICIPANT>-PARTICIPANT_TYPE = 1.
<DB6LW_PARTICIPANT>-PARTICIPANT_NO_HOLDING_LK = 1.
<DB6LW_PARTICIPANT>-APPLICATION_HANDLE = 1.
ENDLOOP.

LOOP AT IT_DB6LW_PARTICIPANT INTO WA_DB6LW_PARTICIPANT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6LW_PARTICIPANT-APPL_ID, sy-vline,
WA_DB6LW_PARTICIPANT-APPL_NAME, sy-vline,
WA_DB6LW_PARTICIPANT-AUTH_ID, sy-vline,
WA_DB6LW_PARTICIPANT-AGENT_TID, sy-vline,
WA_DB6LW_PARTICIPANT-COORD_AGENT_TID, sy-vline,
WA_DB6LW_PARTICIPANT-AGENT_STATUS, sy-vline.
ENDLOOP. *Add any further fields from structure WA_DB6LW_PARTICIPANT 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_DB6LW_PARTICIPANT 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_DB6LW_PARTICIPANT INTO WA_DB6LW_PARTICIPANT. *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_DB6LW_PARTICIPANT_STR,
XMLID TYPE STRING,
PARTICIPANT_NO TYPE STRING,
PARTICIPANT_TYPE TYPE STRING,
PARTICIPANT_NO_HOLDING_LK TYPE STRING,
APPLICATION_HANDLE TYPE STRING,
APPL_ID TYPE STRING,
APPL_NAME TYPE STRING,
AUTH_ID TYPE STRING,
AGENT_TID TYPE STRING,
COORD_AGENT_TID TYPE STRING,
AGENT_STATUS TYPE STRING,
LOCK_TIMEOUT_VAL TYPE STRING,
LOCK_WAIT_VAL TYPE STRING,
WORKLOAD_ID TYPE STRING,
WORKLOAD_NAME TYPE STRING,
SERVICE_CLASS_ID TYPE STRING,
SERVICE_SUBCLASS_NAME TYPE STRING,
SERVICE_SUPERCLASS_NAME TYPE STRING,
CURRENT_REQUEST TYPE STRING,
LOCK_ESCALATION TYPE STRING,
PAST_ACTIVITIES_WRAPPED TYPE STRING,
CLIENT_USERID TYPE STRING,
CLIENT_WRKSTNNAME TYPE STRING,
CLIENT_APPLNAME TYPE STRING,
CLIENT_ACCTNG TYPE STRING,
OBJECT_REQUESTED TYPE STRING,
LOCK_NAME TYPE STRING,
LOCK_OBJECT_TYPE TYPE STRING,
LOCK_ATTRIBUTES TYPE STRING,
LOCK_CURRENT_MODE TYPE STRING,
LOCK_MODE_REQUESTED TYPE STRING,
LOCK_MODE TYPE STRING,
LOCK_COUNT TYPE STRING,
LOCK_HOLD_COUNT TYPE STRING,
LOCK_RRIID TYPE STRING,
LOCK_STATUS TYPE STRING,
LOCK_RELEASE_FLAGS TYPE STRING,
TABLE_FILE_ID TYPE STRING,
TABLE_NAME TYPE STRING,
TABLE_SCHEMA TYPE STRING,
TABLESPACE_NAME TYPE STRING,
THRESHOLD_ID TYPE STRING,
THRESHOLD_NAME TYPE STRING,
LOCK_WAIT_START_TIME TYPE STRING,
LOCK_WAIT_END_TIME TYPE STRING,
WAIT_TIME_MS TYPE STRING,END OF T_EKKO_STR. DATA: WA_DB6LW_PARTICIPANT_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_DB6LW_PARTICIPANT_STR-XMLID sy-vline
WA_DB6LW_PARTICIPANT_STR-PARTICIPANT_NO sy-vline
WA_DB6LW_PARTICIPANT_STR-PARTICIPANT_TYPE sy-vline
WA_DB6LW_PARTICIPANT_STR-PARTICIPANT_NO_HOLDING_LK sy-vline
WA_DB6LW_PARTICIPANT_STR-APPLICATION_HANDLE sy-vline
WA_DB6LW_PARTICIPANT_STR-APPL_ID sy-vline
WA_DB6LW_PARTICIPANT_STR-APPL_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-AUTH_ID sy-vline
WA_DB6LW_PARTICIPANT_STR-AGENT_TID sy-vline
WA_DB6LW_PARTICIPANT_STR-COORD_AGENT_TID sy-vline
WA_DB6LW_PARTICIPANT_STR-AGENT_STATUS sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_TIMEOUT_VAL sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_WAIT_VAL sy-vline
WA_DB6LW_PARTICIPANT_STR-WORKLOAD_ID sy-vline
WA_DB6LW_PARTICIPANT_STR-WORKLOAD_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-SERVICE_CLASS_ID sy-vline
WA_DB6LW_PARTICIPANT_STR-SERVICE_SUBCLASS_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-SERVICE_SUPERCLASS_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-CURRENT_REQUEST sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_ESCALATION sy-vline
WA_DB6LW_PARTICIPANT_STR-PAST_ACTIVITIES_WRAPPED sy-vline
WA_DB6LW_PARTICIPANT_STR-CLIENT_USERID sy-vline
WA_DB6LW_PARTICIPANT_STR-CLIENT_WRKSTNNAME sy-vline
WA_DB6LW_PARTICIPANT_STR-CLIENT_APPLNAME sy-vline
WA_DB6LW_PARTICIPANT_STR-CLIENT_ACCTNG sy-vline
WA_DB6LW_PARTICIPANT_STR-OBJECT_REQUESTED sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_OBJECT_TYPE sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_ATTRIBUTES sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_CURRENT_MODE sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_MODE_REQUESTED sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_MODE sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_COUNT sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_HOLD_COUNT sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_RRIID sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_STATUS sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_RELEASE_FLAGS sy-vline
WA_DB6LW_PARTICIPANT_STR-TABLE_FILE_ID sy-vline
WA_DB6LW_PARTICIPANT_STR-TABLE_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-TABLE_SCHEMA sy-vline
WA_DB6LW_PARTICIPANT_STR-TABLESPACE_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-THRESHOLD_ID sy-vline
WA_DB6LW_PARTICIPANT_STR-THRESHOLD_NAME sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_WAIT_START_TIME sy-vline
WA_DB6LW_PARTICIPANT_STR-LOCK_WAIT_END_TIME sy-vline
WA_DB6LW_PARTICIPANT_STR-WAIT_TIME_MS sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.