doris 2.1 Queries Acceleration-Hints 学习笔记
1 Hint Classification
1.1 Leading Hint:Specifies the join order according to the order provided in the leading hint.
1.2 Ordered Hint:A specific type of leading hint that specifies the join order as the original text sequence.
1.3 Distribute Hint:Specifies the data distribution method for joins as either shuffle or broadcast.
1.4 CBO Rules
1.4.1 CBO rule control hints
2 Hint Log
2.1 usage and log
explain shape plan select /*+ leading(t2 t1) */