sys Schema
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Starting from v8.0.0, TiDB provides the sys schema. You can use the views in sys schema to understand the data in the system tables, INFORMATION_SCHEMA, and PERFORMANCE SCHEMA of TiDB.
Tables for MySQL compatibility
| Table name | Description |
|---|---|
schema_unused_indexes | Records indexes that have not been used since the last start of TiDB. |
sys Schemawas last updated 3/29/2024, 4:54:49 AM: Update and correct information aboud sys.schema_unused_indexes (#16885)