![]() Computed columns that are included in a capture instance always have a value of NULL.Įrror 313 is expected if LSN range supplied is not appropriate when calling cdc.fn_cdc_get_all_changes_ or cdc.fn_cdc_get_net_changes_. When _$operation = 1, these columns are assigned their value at the time of the delete. Columns of data type varbinary(max), varchar(max), or nvarchar(max) are assigned a NULL value when _$operation = 3 unless the column changed during the update. ![]() RemarksĬolumns of data type image, text, and ntext are always assigned a NULL value when _$operation = 1 or _$operation = 3. When the caller does not have permission to view the source data, the function returns error 229 The SELECT permission was denied on the object 'fn_cdc_get_all_changes_.', database '\', schema 'cdc'. For all other users, requires SELECT permission on all captured columns in the source table and, if a gating role for the capture instance was defined, membership in that database role. Requires membership in the sysadmin fixed server role or db_owner fixed database role. If no columns were specified in the captured column list, all columns in the source table are returned. The remaining columns returned by the function are the captured columns identified when the capture instance was created. When _$operation = 3 or 4, only those bits corresponding to columns that changed are set to 1. This value has all defined bits set to 1 when _$operation = 1 or 2. ![]() This value applies only when the row filter option 'all update old' is specified.Ĥ = update (captured column values are those after the update operation)Ī bit mask with a bit corresponding to each captured column identified for the capture instance. Can be one of the following:ģ = update (captured column values are those before the update operation). Identifies the data manipulation language (DML) operation needed to apply the row of change data to the target data source. Sequence value used to order changes to a row within a transaction. Changes committed in the same transaction share the same commit LSN value. Table returned Column nameĬommit LSN associated with the change that preserves the commit order of the change. For changes due to an update operation, this option returns both the row containing the column values before the update and the row containing the column values after the update. Returns all changes within the specified LSN range. For changes due to an update operation, this option only returns the row containing the new values after the update is applied. ::= Īn option that governs the content of the metadata columns as well as the rows returned in the result set. ![]() Only rows in the cdc._CT change table with a value in _$start_lsn greater than or equal to from_lsn and less than or equal to to_lsn are included in the result set. The LSN value that represents the high endpoint of the LSN range to include in the result set. Only rows in the cdc._CT change table with a value in _$start_lsn greater than or equal to from_lsn are included in the result set. The LSN value that represents the low endpoint of the LSN range to include in the result set. The function name is derived and uses the format cdc.fn_cdc_get_all_changes_ where capture_instance is the value specified for the capture instance when the source table is enabled for change data capture.Ĭdc.fn_cdc_get_all_changes_capture_instance ( from_lsn, to_lsn, '' ) This enumeration function is created at the time that a source table is enabled for change data capture. When the 'all update old' option is specified, update operations are represented as two rows: one containing the values of the captured columns before the update and another containing the values of the captured columns after the update. When the 'all' row filter option is specified, each change has exactly one row to identify the change. Row filtering options govern the content of the metadata columns as well as the rows returned in the result set. ![]() In addition to returning the change data, four metadata columns provide the information you need to apply the changes to another data source. If a source row had multiple changes during the interval, each change is represented in the returned result set. Returns one row for each change applied to the source table within the specified log sequence number (LSN) range. ![]()
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