CREATE OR REPLACE VIEW view_name 相當於 DROP VIEW IF EXISTS view_name,後面接著 CREATE VIEW view_name。 暫時的 暫時性檢視只有建立它的會話可見,並會在會話結束時刪除。 全域暫存 適用於: Databricks Runtime 全域暫時性視圖會連結至系統保留的暫存架構 global_temp。 如果不存在 只有在檢視不存在時,才會建...
Databricks Runtime Constructs a virtual table that has no physical data based on the result-set of a SQL query.ALTER VIEWandDROP VIEWonly change metadata. Syntax CREATE [ OR REPLACE ] [ TEMPORARY ] VIEW [ IF NOT EXISTS ] view_name [ column_list ] [ schema_binding | COMMENT view_co...
问spark databricks中CREATE TEMPORARY VIEW与Createorreplacetempview的差异ENSpark SQL 支持自动将 JavaBean...
Узнайте, какиспользоватьсинтаксис CREATE VIEW языка SQL в Databricks SQL и Databricks Runtime.
适用于:Databricks SQL 具体化视图是预计算结果可用于查询的视图,并且可以更新以反映输入中的更改。 每次刷新具体化视图时,都会重新计算查询结果,以反映上游数据集中的变化。 所有具体化视图都由 DLT 管道支持。 你可以手动或按计划刷新具体化视图。 若要详细了解如何执行手动刷新,请参阅REFRESH(MATERIALIZED ...
CREATE MATERIALIZED VIEW Applies to:Databricks SQL Amaterialized viewis a view where precomputed results are available for query and can be updated to reflect changes in the input. Each time amaterialized viewis refreshed, query results are recalculated to reflect changes in upstream datasets. All...
-- Row filters: Fine-grained access control CREATE OR REPLACE VIEW filtered_table AS SELECT * FROM sales WHERE region = 'US'; -- Limit data visibility to a specific region Powered By Schema-Bewertung Databricks unterstützt die Weiterentwicklung des Schemas durch CREATE OR REPLACE TABLE und ...
replaceIfExists Iftrue, Liquibase usesCREATE OR REPLACEsyntax when creating the view.Default:false. Available in Liquibase 1.5+. databricks, db2, firebird, h2, hsqldb, ingres, mariadb, mssql, mysql, oracle, postgresql, sqlite, sybase schemaName ...
Databricks SQL Databricks Runtime 14.1 和更新版本 除了位置參數調用之外,您也可以使用具名參數調用來叫用SQL 和 Python UDF。 語法 複製 CREATE [OR REPLACE] [TEMPORARY] FUNCTION [IF NOT EXISTS] function_name ( [ function_parameter [, ...] ] ) { [ RETURNS data_type ] | RETURNS TABLE [ ( co...
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