适用于: Databricks SQL Databricks Runtime删除与谓词匹配的行。 如果未提供谓词,则删除所有行。只有Delta Lake 表支持此语句。语法复制 DELETE FROM table_name [table_alias] [WHERE predicate] 参数table_name 标识现有表。 名称不得包含时态规范。 table_name 不得为外表。 table_alias 定义表的别名。 该...
DeltaTable.forPath(spark, "/data/events/") .as("events") .merge( updatesDF.as("updates"), "events.eventId = updates.eventId") .whenMatched .updateExpr( Map("data" -> "updates.data")) .whenNotMatched .insertExpr( Map( "date" -> "updates.date", "eventId" -> "updates.eventId"...
如果配置了spark.databricks.delta.commitInfo.enabled(默认是true)则还会增加commitInfo信息等,如{"commitInfo":{"timestamp":1609400013646,"operation":"WRITE","operationParameters":{"mode":"Append","partitionBy":"[]"},"readVersion":0,"isBlindAppend":true,"operationMetrics":{"numFiles":"1","numOu...
Find out more information on the rollback feature in the Delta table hereTime Travel with Delta Tables in Databricks? 3. Using TRUNCATE command in Spark? The TRUNCATE in Spark SQL is a DDL command that cleans all the records in the target table at once. This does not require any condition...
("===") //3) Delete selected records in dataframe println("===") println("2a) Starting delete") /* Option 1: // Not supported currently sc.cassandraTable("books_ks", "books") .where("book_pub_year = 1891") .deleteFromCassandra("books_ks", "books") */ //Option 2: Cassandra...
AzureDatabricksDeltaLakeSource AzureDatabricksLinkedService AzureDataExplorerCommandActivity AzureDataExplorerLinkedService AzureDataExplorerSink AzureDataExplorerSource AzureDataExplorerTableDataset AzureDataLakeAnalyticsLinkedService AzureDataLakeStoreDataset AzureDataLakeStoreLinkedService AzureDataLakeSto...
InfoProviders, from which we need to delete data first, before we continue to delete them all. 3) One usage is sufficient: <br /> 0.1. We use this to delete the attributes and texts completely from the Info Object. 0.1. If one of the records from master data is found to be used,...
Databricks SQL Databricks Runtime 刪除符合述詞的數據列。 未提供述詞時,會刪除所有數據列。 只有Delta Lake 數據表才支援此語句。 語法 複製 DELETE FROM table_name [table_alias] [WHERE predicate] 參數 table_name 識別現有的數據表。 名稱不得包含時態規格。
适用于: Databricks SQL Databricks Runtime删除与谓词匹配的行。 如果未提供谓词,则删除所有行。只有Delta Lake 表支持此语句。语法复制 DELETE FROM table_name [table_alias] [WHERE predicate] 参数table_name 标识现有表。 名称不得包含时态规范。 table_name 不得为外表。 table_alias 定义表的别名。 该...
适用于: Databricks SQL Databricks Runtime删除与谓词匹配的行。 如果未提供谓词,则删除所有行。只有Delta Lake 表支持此语句。语法复制 DELETE FROM table_name [table_alias] [WHERE predicate] 参数table_name 标识现有表。 名称不得包含时态规范。 table_name 不得为外表。 table_alias 定义表的别名。 ...