Query Optimization Approach with Middle Storage Layer for Spark SQL.
Aibo SongMingyu ZhaiYingying XuePeng ChenMingyang DuYutong WanPublished in: CSCWD (2018)
Keyphrases
- query optimization
- query optimizer
- recursive queries
- storage structures
- data placement
- query optimizers
- database systems
- execution plan
- efficient query processing
- cost model
- query processing
- xml data
- cardinality estimation
- multidatabase systems
- relational databases
- cost estimation
- query language
- storage and retrieval
- storage systems
- database
- data types
- query execution plan
- selectivity estimation
- databases
- query execution
- database management systems
- data storage
- relational database management systems
- query execution plans
- database queries
- sql queries
- approximate query answering
- database applications
- query scheduling
- query plan
- relational database systems
- object oriented databases
- database technology
- duplicate elimination
- relational model
- query evaluation
- sql server
- file structure
- join queries
- path expressions