RaigorJiang commented on a change in pull request #11845:
URL: https://github.com/apache/shardingsphere/pull/11845#discussion_r689426860
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File path: docs/document/content/features/dist-sql/syntax/ral/ral.en.md
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@@ -0,0 +1,28 @@
++++
+title = "RAL"
+weight = 1
++++
+
+## Definition
+
+RAL (Resource & Rule Administrate Language) responsible for the added-on
feature of hint, transaction type switch, sharding execute planning and so on.
+
+## Usage
+
+| Statement | Function
| Example |
+|:---------------------------------------------------|:-----------------------------------------------------------------------------------------------------------|:----------------------------------------------|
+|set variable transaction_type = xx | Modify transaction_type
of the current connection, supports LOCAL, XA, BASE
| set variable transaction_type = XA |
+|show variable transaction_type | Query the transaction
type of the current connection
| show variable transaction_type |
+|show variable cached_connections | Query the number of
cached physical database connections in the current connection
| show variable cached_connections |
+|preview SQL | Preview the actual SQL
| preview select * from t_order |
Review comment:
good suggestion
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