Databricks recommends usingCREATE OR REPLACE TABLEstatements for use cases where you want to fully overwrite the target table with new data. For example, to overwrite a Delta table with all data from a Parquet directory, you could run the following command: ...
DROP TABLE [ IF EXISTS ] table_name 參數 IF EXISTS 如果指定,當數據表不存在時,不會擲回任何TABLE_OR_VIEW_NOT_FOUND錯誤。 table_name 要卸除之數據表的名稱。 名稱不得包含時態規格。 如果找不到數據表,Azure Databricks 就會引發TABLE_OR_VIEW_NOT_FOUND錯誤。
適用於:Databricks SQL Databricks Runtime卸除Bloom 篩選索引。語法複製 DROP BLOOMFILTER INDEX ON [TABLE] table_name [FOR COLUMNS(columnName1 [, ...] ) ] Parameterstable_name 識別現有的 Delta table。 名稱不得包含 時態規格或選項規格。如果table 名稱或其中一個 columns 不存在,命令就會...
In the case of Spark delta tables, the DELETE operation is recorded in delta logs as a transaction. This helps to retrieve them using the ROLLBACK command. Find out more information on the rollback feature in the Delta table hereTime Travel with Delta Tables in Databricks? 3. Using TRUNCATE...
Databricks SQL Databricks Runtime Drops a Bloom filter index. Syntax DROPBLOOMFILTERINDEXON[TABLE]table_name[FORCOLUMNS(columnName1[,...])] Parameters table_name Identifies an existing Delta table. The name must not include atemporal specification or options specification. ...
Learn how to use the DROP BLOOMFILTER INDEX syntax of the Delta Lake SQL language in Databricks SQL and Databricks Runtime.
DROP BLOOMFILTER INDEX (Azure Databricks 上的 Delta Lake) FSCK (Azure Databricks 上的 Delta Lake) GENERATE (Azure Databricks 上的 Delta Lake) MERGE INTO (Azure Databricks 上的 Delta Lake) OPTIMIZE (Azure Databricks 上的 Delta Lake) REORG TABLE (Azure Databricks 上的 Delta Lak...
Узнайте, какудалитьфункциитаблицыв Delta Lake, чтобыснизитьтребованиякпротоколучтенияизаписииустранитьпроблемысовместимости.
This article describes how Delta Lake column mapping enables metadata-only changes to mark columns as deleted or renamed without rewriting data files.
DROP BLOOMFILTER INDEX (Azure Databricks 上的 Delta Lake) FSCK (Azure Databricks 上的 Delta Lake) GENERATE (Azure Databricks 上的 Delta Lake) MERGE INTO (Azure Databricks 上的 Delta Lake) OPTIMIZE (Azure Databricks 上的 Delta Lake) REORG TABLE (Azure Databricks 上的 Delta Lake) RESTORE (...