41c6c882c2
* Refactor fast_count to return nil instead of 1,000,000 if the exact count times out. * Remove the estimate_post_counts and blank_tag_search_fast_count global config options. * Replace the hardcoded post count estimates inside fast_count with a method that parses Postgres's estimated row count from EXPLAIN. * /counts/posts.json: ** Remove the `raise_on_timeout` parameter. ** Add an `estimate_count=<true|false>` parameter. ** Return null instead of 1,000,000 if the exact count times out.
16 lines
310 B
Ruby
16 lines
310 B
Ruby
class ExplainParser < Struct.new(:sql)
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extend Memoist
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def query_plan
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result = ApplicationRecord.connection.select_one("EXPLAIN (FORMAT JSON) #{sql}")
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json = JSON.parse(result["QUERY PLAN"])
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json.first["Plan"]
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end
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def row_count
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query_plan["Plan Rows"]
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end
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memoize :query_plan
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end
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