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### tidb_read_consistency <span class="version-mark">New in v5.4.0</span>
- Scope: SESSION
- Applies to hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value): Yes (If there are [Non-Transactional DML Statements](/non-transactional-dml.md), update of this variable by hint would not work properly.)
- Applies to hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value): Yes (Note that if [non-transactional DML statements](/non-transactional-dml.md) exist, modifying the value of this variable using hint might not take effect.)
- Type: String
- Default value: `strict`
- This variable is used to control the read consistency for an auto-commit read statement.
