tidb: set global tidb_analyze_column_options to 'all' in load script - #6
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gengliqi wants to merge 1 commit into
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tidb: set global tidb_analyze_column_options to 'all' in load script#6gengliqi wants to merge 1 commit into
tidb_analyze_column_options to 'all' in load script#6gengliqi wants to merge 1 commit into
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Signed-off-by: gengliqi <gengliqiii@gmail.com>
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Set analyze options for better statistics collection for OLAP workloads.
Ref: #4 (comment)
Note that after data is imported via TiDB Lightning, an ANALYZE TABLE operation will be triggered. Previously, the default
tidb_analyze_column_optionswas PREDICATE, so it ran very quickly. With this change to ALL, it will take longer to complete. Therefore, this modification will not only improve query performance but also increase the total data load time.