39f59f554a
This CL mainly changes: Support specifying csv schema manually in s3/hdfs table valued function s3 ( 'URI' = 'https://bucket1/inventory.dat', 'ACCESS_KEY'= 'ak', 'SECRET_KEY' = 'sk', 'FORMAT' = 'csv', 'column_separator' = '|', 'csv_schema' = 'k1:int;k2:int;k3:int;k4:decimal(38,10)', 'use_path_style'='true' ) Add new session variable dry_run_query If set to true, the real query result will not be returned, instead, it will only return the number of returned rows. mysql> select * from bigtable; +--------------+ | ReturnedRows | +--------------+ | 10000000 | +--------------+ This can avoid large result set transmission time and focus on real execution time of query engine. For debug and analysis purpose.
42 lines
1.6 KiB
XML
42 lines
1.6 KiB
XML
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