CREATE TABLE (Hive 格式) 適用於: Databricks Runtime 此語句符合使用 Hive 語法的 CREATE TABLE [使用]。 優先使用 取代 。 CREATE TABLE LIKE 適用於:Databricks SQL Databricks Runtime 使用此語法,您可以根據另一個數據表的定義而非數據來建立新的資料表。 CREATE TABLE CLONE 適用於:Databricks SQL Databr...
ANALYZE TABLE RESTORE TRUNCATE GENERATE MANIFEST [CREATE OR] REPLACE TABLE 不支持 Delta Sharing。 不支持重命名表或更改所有者。 不支持PRIMARY KEY和FOREIGN KEY等表约束。 不支持生成的列、标识列和默认列。 示例 SQL复制 -- Creates a streaming table that processes files stored in the given e...
Databricks SQL Databricks Runtime 將資訊主鍵或資訊外鍵新增為CREATE TABLE或CREATE MATERIALIZED VIEW語句的一部分。 若要將檢查條件約束新增至 Delta Lake 數據表,請在建立數據表之後使用ALTER TABLE。 語法 使用table_constraint子句來定義跨越多個數據行的條件約束,或將語法與數據行定義分開。
V této verzi už tuto syntaxi nemůžete použít. Tato změna zajišťuje konzistenci, odpovídá standardu SQL a podporuje budoucí vylepšení. CHECK Přidání omezení pro neplatný sloupec teď vrátí UNRESOLVED_COLUMN.WITH_SUGGESTION třídu chyb. Pokud chcete poskytov...
Access is granted programmatically (from Python or SQL) to tables or views based on user/group. This approach requires both cluster and table access control to be enabled and requires a premium tier workspace. File access is disabled through a cluster level configuration which ensures the only ...
Note the method in which secrets are referenced in the config section as it is different from the usual dbutils syntaxThe benefit of this approach is that the scope and secret names are not exposed to end-users and they do not require read access to the secret sco...
Note the method in which secrets are referenced in the config section as it is different from the usual dbutils syntaxThe benefit of this approach is that the scope and secret names are not exposed to end-users and they do not require read access to the secret scope however the creator ...
Finally, you could also create a SQL table using the following syntax which specifies the xml format, xml file path, and rowTag. With this table created, you’ll be able to write SQL scripts to query your xml data in tabular format. ...
so we create the Hive Database and Delta table on top of our Delta file. Notice theCreate Table Using Delta Locationsyntax. This syntax enables the Hive metastore to automatically inherit the schema, partitioning and table properties of the existing data — effectively ...
Delta Live Tables provides a declarative framework to define transformations, data validation rules and target structure. You can use SQL syntax to declare a continuous pipeline as shown below: -- Create the bronze bike status table containing the raw JSON ...