DELETEFROMtable_nameWHEREcondition; 1. 在这个语句中,table_name是要删除数据的表名,condition是删除数据的条件。如果不指定条件,则将删除表中的所有数据。 示例 假设我们有一个名为employee的表,其中存储了员工的信息。现在我们想删除工资低于5000的员工信息,可以使用以下SparkSQL代码: DELETEFROMemployeeWHEREsalary<5...
数据可以直接支持sql查询,老spark用户也可以直接使用dataframe api去查询数据。 sql查询 SELECT * FROM events -- query table in the metastore SELECT * FROM delta.`/delta/events` -- query table by path 1. 2. dataframe查询 spark.table("events") // query table in the metastore spark.read.format(...
Spark SQL目前只支持硬删除 语法:DELETEFROMtableIdentifier[WHEREBOOL_EXPRESSION] 代码:deletefromhudi_merge_sourcewhereid=1; 七、Insert Overwrite 代码:--insertoverwritenon-partitionedtable insertoverwritehudi_mor_tblselect99,'a99',20.0,900; insertoverwritehudi_cow_nonpcf_tblselect99,'a99',20.0; ...
|create table hadoop_prod.default.b (id int,name string,age int,tp string) using iceberg """.stripMargin) spark.sql( """ |insert into hadoop_prod.default.b values (1,"zs",30,"delete"),(2,"李四",31,"update"),(4,"王五",32,"add") """.stripMargin) 2、使用MERGE INTO 语法...
TABLES where TABLE_NAME='$table' """ println(sql) var rs = statement.executeQuery(sql) if(rs.next){ //有相应的表 } val sql = s""" delete from $table where ds = $datetime """ val rs = statement.executeUpdate(sql) println(sql "n 删除的数据记录数: " rs.toString()) ...
6. Delete 6.1 Delete 使用如下SQL将id=1的记录删除 代码语言:javascript 代码运行次数:0 运行 AI代码解释 delete from test_hudi_table where id = 1 查看Hudi表的本地目录结构如下,可以看到delete之后又生成了一个deltacommit,同时生成了一个增量log文件。 6.2 Select 再次查询Hudi表 代码语言:javascript ...
spark-sql>desc test_hudi_table; _hoodie_commit_timestringNULL _hoodie_commit_seqnostringNULL _hoodie_record_keystringNULL _hoodie_partition_pathstringNULL _hoodie_file_namestringNULL idintNULL namestringNULL pricedoubleNULL ts bigint NULL
spark.sql.adaptive.enabled TRUE When true, enable adaptive query execution. spark.sql.adaptive.shuffle.targetPostShuffleInputSize 67108864b The target post-shuffle input size in bytes of a task. spark.sql.autoBroadcastJoinThreshold 209715200 Configures the maximum size in bytes for a table that will...
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支持的SQL语句包括:CREATE TABLE, CREATE SELECT, DROP TABLE, INSERT, INSERT SELECT, ALTER TABLE, TRUNCATE, SET, ANALYZE, MSCK REPAIR。 说明 TRUNCATE语句仅支持OSS类型的表,其他类型执行无效果。 不支持的SQL语句包括:SELECT、DELETE、UPDATE、CREATE DATABASE、DROP DATABASE。