BladePipe 1.9.0: New data pipelines, faster Oracle writes, and improved stability.
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SQL Server 到 PolarDB for PostgreSQL

选择对端数据库：
PolarDB for PostgreSQL

数据链路

基本功能

功能说明
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.
UPDATE and DELETE for tables without primary keys are not synced by default (manual selection required).

Data Verification and Correction

Verify all existing data. Optionally, you can correct the inconsistent data based on verification results. Scheduled DataTasks are supported.
For more information, see Create Verification and Correction DataJob.

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

Supports ALTER TABLE ADD COLUMN and DROP COLUMN.

高级功能

功能说明
0 值时间处理

支持将 0 值时间设置成不同类型的值，防止写入对端报错

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.

Adding Virtual Columns

Support adding custom virtual columns with fixed values, such as region, ID, etc.

Setting Target Primary Key

Change the primary key to another field to facilitate data aggregation and other operations.

限制和注意点

限制项说明
主键冲突处理

PostgreSQL <= 9.4 或 Greenplum <= 6, 因不支持冲突掠过或覆盖，当大量主键冲突场景下，性能较低

链路FAQ

源端数据源

前置条件

条件说明
账号权限

文档：SQL Server 需要的权限

开启 SQL Server CDC

exec [你的数据库].sys.sp_cdc_enable_db

任务参数

参数名称说明
maxTxsPerIteration

SQL Server 增量源端 CDC 每次最大扫描事务数

scanParallel

全量阶段：并发扫描表数量
增量阶段：并发扫描 CDC 表数量

eventStoreSize

缓存解析完毕的增量事件缓存大小

Tips: 通用参数配置请参考 通用参数及功能

目标端数据源

前置条件

条件说明
账号权限

具备 SELECT, INSERT, DELETE, UPDATE 常见 DDL 权限
阿里云 AnalyticDB for PostgreSQL 初始账号，或有 SELECT, INSERT, DELETE, UPDATE, 常见 DDL 权限

网络准备

迁移同步节点（sidecar）可连接 PostgreSQL / Greenplum / AnalyticDB for PostgreSQL / PolarDB for PostgreSQL 标准交互接口（如 5432）

任务参数

参数名称说明
keyConflictStrategy

增量写入遇到主键冲突策略:

  • IGNORE 冲突忽略（默认）
  • REPLACE 冲突替换（可选）

dstWholeReplace

将 INSERT 和 UPDATE 操作变成对端的整行覆盖

enableTimeZoneProcess

是否对时间字段进行时区转换

timezone

目标端时区，例如 +08:00, Asia/Shanghai, America/New_York

defaultZeroDate

在遇到'0000-00-00 00:00:00' / '0000-00-00' 值时用于替换的默认值，可选参数有：

  • null (空值)
  • 时间 (14:23:33)
  • 日期 (1970-01-01)
  • 时间日期 (1970-01-01 00:00:00),
  • 时区时间 (14:23:33+08:00 或 1970-01-01 00:00:00+08:00)
caseSensitive

对端写入SQL语句表名大小写策略，包含

  • UpperCase (转大写)
  • LowerCase (转小写)
  • Sensitive (添加限定符)
  • NoSpecified (不转换/不加限定符)
writeStrategy

对端写入策略，包含

  • ROW (单条)
  • MULTI_SQL (多语句)
  • BATCH (批量，默认选项)
  • COPY (PostgreSQL COPY 指令)
defaultGisSRID

设置 GIS 数据类型的 SRID

Tips: 通用参数配置请参考 通用参数及功能