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add experimental feature warnings #2995

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Jun 23, 2020
Merged

add experimental feature warnings #2995

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e00b8a3
add experimental feature warnings
Jun 23, 2020
804b5c4
Merge branch 'master' into add-warnings
ti-srebot Jun 23, 2020
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4 changes: 4 additions & 0 deletions data-type-json.md
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Expand Up @@ -7,6 +7,10 @@ aliases: ['/docs/dev/reference/sql/data-types/json/']

# JSON Type

> **Warning:**
>
> This is still an experimental feature. It is **NOT** recommended that you use it in the production environment.

TiDB supports the `JSON` (JavaScript Object Notation) data type, which is useful for storing semi-structured data. The `JSON` data type provides the following advantages over storing `JSON`-format strings in a string column:

- Use the Binary format for serialization. The internal format permits quick read access to `JSON` document elements.
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4 changes: 4 additions & 0 deletions functions-and-operators/json-functions.md
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Expand Up @@ -7,6 +7,10 @@ aliases: ['/docs/dev/reference/sql/functions-and-operators/json-functions/']

# JSON Functions

> **Warning:**
>
> This is still an experimental feature. It is **NOT** recommended that you use it in the production environment.

TiDB supports most of the JSON functions that shipped with the GA release of MySQL 5.7. Additional JSON functions were added to MySQL 5.7 after its release, and not all are available in TiDB (see [unsupported functions](#unsupported-functions)).

## Functions that create JSON values
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4 changes: 4 additions & 0 deletions generated-columns.md
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Expand Up @@ -7,6 +7,10 @@ aliases: ['/docs/dev/reference/sql/generated-columns/']

# Generated Columns

> **Warning:**
>
> This is still an experimental feature. It is **NOT** recommended that you use it in the production environment.

TiDB supports generated columns as part of MySQL 5.7 compatibility. One of the primary use cases for generated columns is to extract data out of a JSON data type and enable it to be indexed.

## Index JSON using generated column
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4 changes: 4 additions & 0 deletions tidb-configuration-file.md
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Expand Up @@ -353,6 +353,10 @@ Configuration items related to performance.

The Plan Cache configuration of the `PREPARE` statement.

> **Warning:**
>
> This is still an experimental feature. It is **NOT** recommended that you use it in the production environment.

### `enabled`

- Determines whether to enable Plan Cache of the `PREPARE` statement.
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