Welcome to Alibaba Cloud and find out more detail about mapjoin

This topic describes how to use a MAPJOIN statement to join a large table with one or more small tables. It is ...

convenient queries and optimize SQL efficiency. Some existing tuning settings that used to require manual operations such as MapJoin ...

The earlier version of MaxCompute still keeps the physical execution plan when MapJoin Hints are added, and gives priority ...

performed on a maximum of 256 tables. MAPJOIN 　 Eight small tables Quantity limit ...

. ODPS-0123121:Mapjoin exception ...

Cartesian projects and usage of MapJoin. Union all must use the format of subqueries. The In/Not in statements can ...

set to 10,000. If the number of data records to be queried is large. MAPJOIN The Join clause does not ...

exceed 512 MB, you can optimize the preceding statement into mapjoin statement.select /*+ MAPJOIN(B) */ * from A join B on A.value ...

use the mapjoin statement to cache the small table. For the syntax and relevant description, see Introduction to the SELECT ...

be of a certain value, because it does not offer MapJoin. In the previous version, EventTime and other Meta fields are also not provided. ...