createtable#wrapper_functions (function_name sysname, create_stmtnvarchar(max))insertinto#wrapper_functions exec sys.sp_cdc_generate_wrapper_functiondeclare@stmtnvarchar(max)declare#hfunctionscursorlocalfast_forwardforselectcreate_stmtfrom#wrapper_functionsopen#hfunctionsfetch#hfunctionsinto@stmtwhile(@@fetch...
import com.ververica.cdc.connectors.sqlserver.SqlServerSource; import com.ververica.cdc.debezium.DebeziumDeserializationSchema; import com.ververica.cdc.debezium.JsonDebeziumDeserializationSchema; import io.debezium.data.Envelope; import org.apache.flink.api.common.functions.MapFunction; import org.apache.flink...
proceduresys.sp_cdc_enable_table. When a table is enabled for change data capture, an associated capture instance is created to support the dissemination of the change data in the source table. The capture instance consists of a change table and up to two query functions. Metadata that ...
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Learn about change data capture (CDC) in SQL Server and Azure SQL Managed Instance, which records insert, update, and delete activity that applies to a table.
The capture instance consists of a change table and up to two query functions. Metadata that describes the configuration details of the capture instance is retained in the change data capture metadata tables cdc.change_tables, cdc.index_columns, and cdc.captured_columns. This information...
create table #wrapper_functions (function_name sysname, create_stmt nvarchar(max)) insert into #wrapper_functions exec sys.sp_cdc_generate_wrapper_function declare @stmt nvarchar(max) declare #hfunctions cursor local fast_forward for select create_stmt from #wrapper_functions open #h...
函数名称派生并使用格式 cdc.fn_cdc_get_net_changes_<capture_instance>,其中 <capture_instance> 为捕获实例指定的值,当源表启用更改数据捕获时。 有关详细信息,请参阅 sys.sp_cdc_enable_table (Transact-SQL)。Transact-SQL 语法约定语法syntaxsql 复制 cdc.fn_cdc_get_net_chan...
状态通过RuntimeContext进行访问,因此只能在rich functions中使用。请参阅这里获取相关信息, 但是我们很快也会看到一个例子。RichFunction中RuntimeContext提供如下方法: ValueState<T> getState(ValueStateDescriptor<T>) ReducingState<T> getReducingState(ReducingStateDescriptor<T>) ...
8207 Enables singleton updates for Transactional Replication and CDC. Updates to subscribers can be replicated as a DELETE and INSERT pair. This might not meet business rules, such as firing an UPDATE trigger. With Trace Flag 8207, an update to a unique column that affects only one row (a ...