基于行的采样runstats on table schemaName.tableName tablesample bernoulli(20); 基于页的采样runstats on table schemaName.tableName tablesample system(20);
显示全部基于行的采样
runstats on table schemaName.tableName tablesample bernoulli(20);
基于页的采样
runstats on table schemaName.tableName tablesample system(20);
收起