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Refine the layout of basic-features.md (#6740)
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* Refine the layout of basic-features.md

* Update basic-features.md
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Expand Up @@ -6,7 +6,9 @@ aliases: ['/docs/dev/basic-features/']

# TiDB Features

The following table provides an overview of the feature development history of TiDB. Note that features under active development might change before the final release.
This document lists the features supported in each TiDB version. Note that supports for experimental features might change before the final release.

## Data types, functions, and operators

| Data types, functions, and operators | 5.2 | 5.1 | 5.0 | 4.0 |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
Expand All @@ -28,7 +30,11 @@ The following table provides an overview of the feature development history of T
| [Miscellaneous functions](/functions-and-operators/miscellaneous-functions.md) | Y | Y | Y | Y |
| [Operators](/functions-and-operators/operators.md) | Y | Y | Y | Y |
| [Character sets and collations](/character-set-and-collation.md) [^1] | Y | Y | Y | Y |
| **Indexing and constraints** | **5.2** | **5.1** | **5.0** | **4.0** |

## Indexing and constraints

| Indexing and constraints | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [Expression indexes](/sql-statements/sql-statement-create-index.md#expression-index) | Experimental | Experimental | Experimental | Experimental |
| [Columnar storage (TiFlash)](/tiflash/tiflash-overview.md) | Y | Y | Y | Y |
| [RocksDB engine](/storage-engine/rocksdb-overview.md) | Y | Y | Y | Y |
Expand All @@ -38,7 +44,11 @@ The following table provides an overview of the feature development history of T
| [Unique indexes](/constraints.md) | Y | Y | Y | Y |
| [Clustered index on integer `PRIMARY KEY`](/constraints.md) | Y | Y | Y | Y |
| [Clustered index on composite or non-integer key](/constraints.md) | Y | Y | Y | N |

## SQL statements

| **SQL statements** [^2] | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| Basic `SELECT`, `INSERT`, `UPDATE`, `DELETE`, `REPLACE` | Y | Y | Y | Y |
| `INSERT ON DUPLICATE KEY UPDATE` | Y | Y | Y | Y |
| `LOAD DATA INFILE` | Y | Y | Y | Y |
Expand All @@ -53,7 +63,11 @@ The following table provides an overview of the feature development history of T
| [`EXPLAIN`](/sql-statements/sql-statement-explain.md) | Y | Y | Y | Y |
| [`EXPLAIN ANALYZE`](/sql-statements/sql-statement-explain-analyze.md) | Y | Y | Y | Y |
| [User-defined variables](/user-defined-variables.md) | Experimental | Experimental | Experimental | Experimental |
| **Advanced SQL Features** | **5.2** | **5.1** | **5.0** | **4.0** |

## Advanced SQL features

| **Advanced SQL features** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [Prepared statement cache](/sql-prepare-plan-cache.md) | Experimental | Experimental | Experimental | Experimental |
| [SQL plan management (SPM)](/sql-plan-management.md) | Y | Y | Y | Y |
| [Coprocessor cache](/coprocessor-cache.md) | Y | Y | Y | Experimental |
Expand All @@ -63,7 +77,11 @@ The following table provides an overview of the feature development history of T
| [Optimizer hints](/optimizer-hints.md) | Y | Y | Y | Y |
| [MPP Exection Engine](/explain-mpp.md) | Y | Y | Y | N |
| [Index Merge Join](/explain-index-merge.md) | Experimental | Experimental | Experimental | Experimental |

## Data definition language (DDL)

| **Data definition language (DDL)** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| Basic `CREATE`, `DROP`, `ALTER`, `RENAME`, `TRUNCATE` | Y | Y | Y | Y |
| [Generated columns](/generated-columns.md) | Experimental | Experimental | Experimental | Experimental |
| [Views](/views.md) | Y | Y | Y | Y |
Expand All @@ -73,28 +91,44 @@ The following table provides an overview of the feature development history of T
| [DDL algorithm assertions](/sql-statements/sql-statement-alter-table.md) | Y | Y | Y | Y |
| Multi schema change: add column(s) | Experimental | Experimental | Experimental | Experimental |
| [Change column type](/sql-statements/sql-statement-modify-column.md) | Y | Y | N | N |

## Transactions

| **Transactions** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [Async commit](/system-variables.md#tidb_enable_async_commit-new-in-v50) | Y | Y | Y | N |
| [1PC](/system-variables.md#tidb_enable_1pc-new-in-v50) | Y | Y | Y | N |
| [Large transactions (10GB)](/transaction-overview.md#transaction-size-limit) | Y | Y | Y | Y |
| [Pessimistic transactions](/pessimistic-transaction.md) | Y | Y | Y | Y |
| [Optimistic transactions](/optimistic-transaction.md) | Y | Y | Y | Y |
| [Repeatable-read isolation (snapshot isolation)](/transaction-isolation-levels.md) | Y | Y | Y | Y |
| [Read-committed isolation](/transaction-isolation-levels.md) | Y | Y | Y | Y |

## Partitioning

| **Partitioning** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [Range partitioning](/partitioned-table.md) | Y | Y | Y | Y |
| [Hash partitioning](/partitioned-table.md) | Y | Y | Y | Y |
| [List partitioning](/partitioned-table.md) | Experimental | Experimental | Experimental | N |
| [List COLUMNS partitioning](/partitioned-table.md) | Experimental | Experimental | Experimental | N |
| [`EXCHANGE PARTITION`](/partitioned-table.md) | Experimental | Experimental | Experimental | N |
| [Dynamic Pruning](/partitioned-table.md#dynamic-pruning-mode) | Experimental | Experimental | N | N |

## Statistics

| **Statistics** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [CMSketch](/statistics.md) | Deprecated | Deprecated | Deprecated | Y |
| [Histograms](/statistics.md) | Y | Y | Y | Y |
| [Extended statistics (multiple columns)](/statistics.md) | Experimental | Experimental | Experimental | N |
| [Statistics Feedback](/statistics.md#automatic-update) | Experimental | Experimental | Experimental | Experimental |
| [Fast Analyze](/system-variables.md#tidb_enable_fast_analyze) | Experimental | Experimental | Experimental | Experimental |

## Security

| **Security** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [Transparent layer security (TLS)](/enable-tls-between-clients-and-servers.md) | Y | Y | Y | Y |
| [Encryption at rest (TDE)](/encryption-at-rest.md) | Y | Y | Y | Y |
| [Role-based authentication (RBAC)](/role-based-access-control.md) | Y | Y | Y | Y |
Expand All @@ -104,15 +138,23 @@ The following table provides an overview of the feature development history of T
| [Dynamic Privileges](/privilege-management.md#dynamic-privileges) | Y | Y | N | N |
| [Security Enhanced Mode](/system-variables.md#tidb_enable_enhanced_security) | Y | Y | N | N |
| [Redacted Log Files](/log-redaction.md) | Y | Y | Y | N |

## Data import and export

| **Data import and export** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [Fast Importer (TiDB Lightning)](/tidb-lightning/tidb-lightning-overview.md) | Y | Y | Y | Y |
| mydumper logical dumper | Deprecated | Deprecated | Deprecated | Deprecated |
| [Dumpling logical dumper](/dumpling-overview.md) | Y | Y | Y | Y |
| [Transactional `LOAD DATA`](/sql-statements/sql-statement-load-data.md) | Y | Y | Y | N |
| [Database migration toolkit (DM)](/migration-overview.md) | Y | Y | Y | Y |
| [TiDB Binlog](/tidb-binlog/tidb-binlog-overview.md) | Deprecated | Deprecated | Deprecated | Deprecated |
| [TiDB Binlog](/tidb-binlog/tidb-binlog-overview.md) | Y | Y | Y | Y |
| [Change data capture (CDC)](/ticdc/ticdc-overview.md) | Y | Y | Y | Y |
| **Management, observability and tools** | **5.2** | **5.1** | **5.0** | **4.0** |

## Management, observability, and tools

| **Management, observability, and tools** | **5.2** | **5.1** | **5.0** | **4.0** |
|----------------------------------------------------------------------------------------------------------|:------------:|:------------:|:------------:|:------------:|
| [TiDB Dashboard](/dashboard/dashboard-intro.md) | Y | Y | Y | Y |
| [SQL diagnostics](/information-schema/information-schema-sql-diagnostics.md) | Experimental | Experimental | Experimental | Experimental |
| [Information schema](/information-schema/information-schema.md) | Y | Y | Y | Y |
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