From e4f907eb82cbb5287296852ae29877d654996a12 Mon Sep 17 00:00:00 2001
From: Suguru ARAKAWA <arakawa@nautilus-technologies.com>
Date: Tue, 10 Feb 2026 22:20:02 +0900
Subject: [PATCH] docs(sql): add `TRUNCATE` syntax.

---
 docs/sql-features.md | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/docs/sql-features.md b/docs/sql-features.md
index e7058f42..49d254e2 100644
--- a/docs/sql-features.md
+++ b/docs/sql-features.md
@@ -9,6 +9,7 @@ The planned features are listed [here](#planned-features).
 * [CREATE INDEX](#create-index)
 * [DROP TABLE](#drop-table)
 * [DROP INDEX](#drop-index)
+* [TRUNCATE TABLE](#truncate-table)
 * [GRANT PRIVILEGE](#grant-privilege)
 * [REVOKE PRIVILEGE](#revoke-privilege)
 
@@ -18,6 +19,7 @@ The planned features are listed [here](#planned-features).
   <index-definition>
   <drop-table>
   <drop-index>
+  <truncate-table>
   <grant-privilege>
   <revoke-privilege>
 ```
@@ -146,6 +148,17 @@ Limitation: index name must be specified, and it must not be empty.
   RESTRICT
 ```
 
+### TRUNCATE TABLE
+
+```txt
+<truncate-table>:
+  TRUNCATE TABLE <table-name> [<column-identity-restart-option>]
+
+<column-identity-restart-option>:
+  RESTART IDENTITY
+  CONTINUE IDENTITY
+```
+
 ### GRANT PRIVILEGE
 
 ```txt
@@ -923,7 +936,7 @@ The below reserved words are not allowed to use as regular identifiers.
 * `S`
   * `SAVEPOINT`, `SCOPE`, `SEARCH`, `SECOND`, `SELECT`, `SESSION_USER`, `SET`, `SIMILAR`, `SMALLINT`, `SOME`, `SPECIFIC`, `SQL`, `SQLEXCEPTION`, `SQLSTATE`, `SQLWARNING`, `START`, `STATIC`, `SUBLIST`, `SUBSTRING`, `SUM`, `SYMMETRIC`, `SYSTEM_USER`
 * `T`
-  * `TABLE`, `TEMPORARY`, `THEN`, `TIME`, `TIMESTAMP`, `TIMEZONE_HOUR`, `TIMEZONE_MINUTE`, `TINYINT`, `TO`, `TRAILING`, `TRANSLATE`, `TRANSLATION`, `TREAT`, `TRIGGER`, `TRIM`, `TRUE`
+  * `TABLE`, `TEMPORARY`, `THEN`, `TIME`, `TIMESTAMP`, `TIMEZONE_HOUR`, `TIMEZONE_MINUTE`, `TINYINT`, `TO`, `TRAILING`, `TRANSLATE`, `TRANSLATION`, `TREAT`, `TRIGGER`, `TRIM`, `TRUE`, `TRUNCATE`
 * `U`
   * `UNION`, `UNIQUE`, `UNKNOWN`, `UNNEST`, `UPDATE`, `UPPER`, `USER`, `USING`
 * `V`