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remove json_unquote() from expressions-pushed-down.md (#5564) (#5566)
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ti-srebot authored May 6, 2021
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Expand Up @@ -16,7 +16,7 @@ When TiDB reads data from TiKV, TiDB tries to push down some expressions (includ
| [Comparison functions and operators](/functions-and-operators/operators.md#comparison-functions-and-operators) | <, <=, =, != (`<>`), >, >=, [`<=>`](https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#operator_equal-to), [`IN()`](https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#function_in), IS NULL, LIKE, IS TRUE, IS FALSE, [`COALESCE()`](https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#function_coalesce) |
| [Numeric functions and operators](/functions-and-operators/numeric-functions-and-operators.md) | +, -, *, /, [`ABS()`](https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html#function_abs), [`CEIL()`](https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html#function_ceil), [`CEILING()`](https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html#function_ceiling), [`FLOOR()`](https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html#function_floor) |
| [Control flow functions](/functions-and-operators/control-flow-functions.md) | [`CASE`](https://dev.mysql.com/doc/refman/5.7/en/control-flow-functions.html#operator_case), [`IF()`](https://dev.mysql.com/doc/refman/5.7/en/control-flow-functions.html#function_if), [`IFNULL()`](https://dev.mysql.com/doc/refman/5.7/en/control-flow-functions.html#function_ifnull) |
| [JSON functions](/functions-and-operators/json-functions.md) | [JSON_TYPE(json_val)][json_type],<br/> [JSON_EXTRACT(json_doc, path[, path] ...)][json_extract],<br/> [JSON_UNQUOTE(json_val)][json_unquote],<br/> [JSON_OBJECT(key, val[, key, val] ...)][json_object],<br/> [JSON_ARRAY([val[, val] ...])][json_array],<br/> [JSON_MERGE(json_doc, json_doc[, json_doc] ...)][json_merge],<br/> [JSON_SET(json_doc, path, val[, path, val] ...)][json_set],<br/> [JSON_INSERT(json_doc, path, val[, path, val] ...)][json_insert],<br/> [JSON_REPLACE(json_doc, path, val[, path, val] ...)][json_replace],<br/> [JSON_REMOVE(json_doc, path[, path] ...)][json_remove] |
| [JSON functions](/functions-and-operators/json-functions.md) | [JSON_TYPE(json_val)][json_type],<br/> [JSON_EXTRACT(json_doc, path[, path] ...)][json_extract],<br/> [JSON_OBJECT(key, val[, key, val] ...)][json_object],<br/> [JSON_ARRAY([val[, val] ...])][json_array],<br/> [JSON_MERGE(json_doc, json_doc[, json_doc] ...)][json_merge],<br/> [JSON_SET(json_doc, path, val[, path, val] ...)][json_set],<br/> [JSON_INSERT(json_doc, path, val[, path, val] ...)][json_insert],<br/> [JSON_REPLACE(json_doc, path, val[, path, val] ...)][json_replace],<br/> [JSON_REMOVE(json_doc, path[, path] ...)][json_remove] |
| [Date and time functions](/functions-and-operators/date-and-time-functions.md) | [`DATE_FORMAT()`](https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_date-format) |

## Blocklist specific expressions
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