SQL Server
| Function | Description |
|---|---|
Schema Migration | If the target schema does not exist, BladePipe will automatically generate and execute CREATE statements based on the source metadata and the mapping rule. |
Full Data Migration | Migrate data by sequentially scanning data in tables and writing it in batches to the target database. |
Incremental Data Sync | Sync of common DML like INSERT, UPDATE, DELETE is supported. |
Data Verification and Correction | Verify all existing data. Optionally, you can correct the inconsistent data based on verification results. Scheduled DataTasks are supported. |
Subscription Modification | Add, delete, or modify the subscribed tables with support for historical data migration. For more information, see Modify Subscription. |
Table Name Mapping | Support the mapping rules, namely, keeping the name the same as that in Source, converting the text to lowercase, converting the text to uppercase, truncating the name by "_digit" suffix. |
DDL Sync | ALTER TABLE ADD COLUMN, DROP COLUMN |
Advanced Functions
| Function | Description |
|---|---|
Removal of Target Data before Full Data Migration | Remove the existing data in the Target before running the Full Data Migration, applicable for DataJobs reruning and scheduled Full Data migrations. |
Recreating Target Table | Recreate target tables before running the Full Data Migration, applicable for DataJobs reruning and scheduled Full Data migrations. |
Incremental Data Write Conflict Resolution Rule | IGNORE: Ignore primary key conflicts (skip writing), REPLACE: Replace the entire row in case of primary key conflicts. |
Handling of Zero Value for Time | Allow setting zero value for time to different data types to prevent errors when writing to the Target. |
Custom Code | For more information, see Custom Code Processing, Debug Custom Code and Logging in Custom Code. |
Data Filtering Conditions | Support data filtering using WHERE conditions, with SQL-92 as the SQL language. For more information, see Data Filtering. |
Setting Target Primary Key | Change the primary key to another field to facilitate data aggregation and other operations. |
Prerequisites
| Prerequisite | Description |
|---|---|
Permissions for Account | |
Enable SQL Server CDC | Run: exec [your_database].sys.sp_cdc_enable_db |
Parameters
| Parameter | Description |
|---|---|
maxTxsPerIteration | Maximum number of transactions to scan each time in incremental data sync. |
scanParallel | Full data stage: The number of tables to be scanned in parallel. |
eventStoreSize | Size of the cache for parsed incremental events. |
Tips: To modify the general parameters, see General Parameters and Functions.
Prerequisites
| Prerequisite | Description |
|---|---|
Permissions for Account | |
Port Preparation | Allow the migration and sync node (Worker) to connect to the SQL Server port (e.g., 1433). |
Parameters
| Parameter | Description |
|---|---|
keyConflictStrategy | Strategy for handling primary key conflicts during write in Incremental DataTask:
|
dstWholeReplace | Convert INSERT and UPDATE operations into full row replacement in the Target. |
enableTimeZoneProcess | Enable time zone conversion to datetime fields. |
timezone | Target SQL Server timezone, e.g., +08:00 Asia/Shanghai America/New_York. |
defaultZeroDate | Default value for replacing '0000-00-00 00:00:00' / '0000-00-00' values. Optional parameters include:
|
caseSensitive | Case sensitivity strategy for SQL statements, including:
|
writeStrategy | Strategy of writing data to the Target, including:
|
Tips: To modify the general parameters, see General Parameters and Functions.