Databricks SQL Databricks Runtime 11.3 LTS 和更新版本 允許SET作為可選關鍵字。 適用於: Databricks SQL Databricks Runtime 13.3 LTS 和更新版本 將標籤套用至資料表。 您需要具有APPLY TAG權限,才能將標籤新增至資料表。 tag_name 字面上的STRING.tag_name在資料表或資料行內必須是唯一的。 tag_val...
REPAIR TABLE 適用於: Databricks SQL 此命令會修復或修改資料表的數據分割。 搭配Delta Lake 使用SYNC METADATA子句,可以根據表格的元數據更新目錄服務,或者為已啟用 Iceberg 讀取的表格生成 Iceberg 元數據。 當您修改非 Delta Lake 數據表的數據分割時,請勿使用SYNC METADATA。 支援的功能取決於數據表是在 Unity 目...
SQL复制 -- Creates a streaming table that processes files stored in the given external location with-- schema inference and evolution.>CREATEORREFRESHSTREAMINGTABLEraw_dataASSELECT*FROMSTREAM read_files('abfss://container@storageAccount.dfs.core.windows.net/base/path');-- Creates a strea...
Applies to:Databricks SQLDatabricks Runtime TheANALYZE TABLEstatement collects estimated statistics about a specific table or all tables in a specified schema. These statistics are used by the query optimizer to generate an optimal query plan. Because they can become outdated as data changes, ...
Implementing table partitioning on a table that is exceptionally large in Azure SQL Database Hyperscale is not trivial due to the large data movement...
SQL Server 2022(16.x)及更高版本支持CREATE EXTERNAL TABLE AS SELECT(CETAS)创建外部表,然后并行导出到 Azure Data Lake Storage (ADLS) Gen2、Azure 存储帐户 V2 和 S3 兼容的对象存储的 Transact-SQL SELECT 语句的结果。 备注 适用于 Azure SQL 托管实例的 CETAS 的功能和安全性不同于 SQL Server 或 ...
1.我们在进行SQL Server开发的时候,经常会使用垮库查询。但是在默认情况下,使用Azure SQL Database不支持垮库查询。如下图: 2.我们执行垮库查询语句,如下: SELECT A.CustomerID,A.FirstName, A.LastName,B.OrderID FROM CRMDB.dbo.CustomerInfo AS A LEFT JOIN OrderDB.dbo.OrderInfo AS B ON A.Customer...
Applies to: SQL Server (SQL Server 2008 (10.0.x) and later) and Azure SQL Database. Specifies that values are incremented in identity columns when replication agents carry out insert operations. You can specify this clause only if column_name is an identity column. SPARSE Indicates that the ...
CREATE TABLE AS SELECT in Azure Synapse Analytics and Microsoft Fabric creates a new table based on the output of a SELECT statement. CTAS is the simplest and fastest way to create a copy of a table.
Copy the csv files to Azure File Share Inserted the key column values in the tablekey table on SQL DB insertintotablekey(tablename,keycolumn)values('train','TRIP_ID')insertintotablekey(tablename,keycolumn)values('trip','ID') Target SQL DB is configu...