add raw-sql docs (#75)

Author: wangzuo

website/.vitepress/config.mts

@@ -123,6 +123,7 @@ function sidebarDocs(): DefaultTheme.SidebarItem[] {
       collapsed: false,
       items: [
         { text: "Query Methods", link: "query-methods" },
+        { text: "Raw SQL", link: "raw-sql" },
         { text: "Transaction", link: "transaction" },
         { text: "Association", link: "association" },
         { text: "Data Types", link: "data-types" },

website/docs/raw-sql.md

@@ -0,0 +1,77 @@
+# Raw SQL
+
+Queryx provides direct support for executing raw SQL queries through the following methods.
+
+## Query
+
+`Query` returns all rows from the database.
+
+::: tabs key:lang
+== Go
+
+```go
+type User struct {
+  Name string `db:"user_name"`
+}
+var users []User
+err := c.Query("select name as user_name from users where id in (?)", []int64{1, 2}).Scan(&users)
+```
+
+== TypeScript
+
+```typescript
+let users = await c.query<{ user_name: string }>(
+  "select name as user_name from users where id in (?)",
+  [1, 2],
+);
+```
+
+:::
+
+## Query One
+
+`QueryOne` returns at most a single row from the database.
+
+::: tabs key:lang
+== Go
+
+```go
+var user struct {
+  ID int64 `db:"user_id"`
+}
+err = c.QueryOne("select id as user_id from users where id = ?", 1).Scan(&user)
+```
+
+== TypeScript
+
+```typescript
+let user = await c.queryOne<{ user_id: number }>(
+  "select id as user_id from users where id = ?",
+  1,
+);
+```
+
+:::
+
+## Exec
+
+`Exec` for SQL statement that don't return data.
+
+::: tabs key:lang
+== Go
+
+```go
+rowsAffected, err := c.Exec("update users set name = ? where id = ?", "test1", 1)
+```
+
+== TypeScript
+
+```typescript
+let rowAffected = await c.exec(
+  "update users set name = ? where id = ?",
+  "test1",
+  1,
+);
+```
+
+:::