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Update mysql.md

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alexey-milovidov 2019-05-25 15:52:04 +03:00 committed by GitHub
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docs/ru/query_language/table_functions/mysql.md
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@ -20,9 +20,9 @@ mysql('host:port', 'database', 'table', 'user', 'password'[, replace_query, 'on_
To specify `on_duplicate_clause` you need to pass `0` to the `replace_query` parameter. If you simultaneously pass `replace_query = 1` and `on_duplicate_clause`, ClickHouse generates an exception.
At this time, simple `WHERE` clauses such as ` =, !=, >, >=, <, <=` are executed on the MySQL server.
At this time, simple `WHERE` clauses and elements of `AND` chain in `WHERE` clause such as `=, !=, >, >=, <, <=, LIKE, IN` with compatible functions are also pushed down for execution on the MySQL server.
The rest of the conditions and the `LIMIT` sampling constraint are executed in ClickHouse only after the query to MySQL finishes.
The rest of the conditions and the `LIMIT` constraint are executed in ClickHouse only after the query to MySQL finishes.
**Returned Value**