Add simple extra param for table create statement

src/backend/table_builder.rs

@@ -55,6 +55,10 @@ pub trait TableBuilder:
         write!(sql, " )").unwrap();
 
         self.prepare_table_opt(create, sql);
+
+        if let Some(extra) = &create.extra {
+            write!(sql, " {extra}").unwrap();
+        }
     }
 
     /// Translate [`TableRef`] into SQL statement.

src/table/column.rs

@@ -601,13 +601,43 @@ impl ColumnDef {
     }
 
     /// Some extra options in custom string
+    /// ```
+    /// use sea_query::{tests_cfg::*, *};
+    /// let table = Table::create()
+    ///     .table(Char::Table)
+    ///     .col(
+    ///         ColumnDef::new(Char::Id)
+    ///             .uuid()
+    ///             .extra("DEFAULT uuid_generate_v4()")
+    ///             .primary_key()
+    ///             .not_null(),
+    ///     )
+    ///     .col(
+    ///         ColumnDef::new(Char::CreatedAt)
+    ///             .timestamp_with_time_zone()
+    ///             .extra("DEFAULT NOW()")
+    ///             .not_null(),
+    ///     )
+    ///     .to_owned();
+    /// assert_eq!(
+    ///     table.to_string(PostgresQueryBuilder),
+    ///     [
+    ///         r#"CREATE TABLE "character" ("#,
+    ///         r#""id" uuid DEFAULT uuid_generate_v4() PRIMARY KEY NOT NULL,"#,
+    ///         r#""created_at" timestamp with time zone DEFAULT NOW() NOT NULL"#,
+    ///         r#")"#,
+    ///     ]
+    ///     .join(" ")
+    /// );
+    /// ```
     pub fn extra<T>(&mut self, string: T) -> &mut Self
     where
         T: Into<String>,
     {
         self.spec.push(ColumnSpec::Extra(string.into()));
         self
     }
+
     pub fn get_column_name(&self) -> String {
         self.name.to_string()
     }

src/table/create.rs

@@ -86,6 +86,7 @@ pub struct TableCreateStatement {
     pub(crate) foreign_keys: Vec<ForeignKeyCreateStatement>,
     pub(crate) if_not_exists: bool,
     pub(crate) check: Vec<SimpleExpr>,
+    pub(crate) extra: Option<String>,
 }
 
 /// All available table options
@@ -275,6 +276,52 @@ impl TableCreateStatement {
         self.indexes.as_ref()
     }
 
+    /// Rewriting extra param. You should take care self about concat extra params. Add extra after options.
+    /// Example for PostgresSQL [Citus](https://github.com/citusdata/citus) extension:
+    /// ```
+    /// use sea_query::{tests_cfg::*, *};
+    /// let table = Table::create()
+    ///     .table(Char::Table)
+    ///     .col(
+    ///         ColumnDef::new(Char::Id)
+    ///             .uuid()
+    ///             .extra("DEFAULT uuid_generate_v4()")
+    ///             .primary_key()
+    ///             .not_null(),
+    ///     )
+    ///     .col(
+    ///         ColumnDef::new(Char::CreatedAt)
+    ///             .timestamp_with_time_zone()
+    ///             .extra("DEFAULT NOW()")
+    ///             .not_null(),
+    ///     )
+    ///     .col(ColumnDef::new(Char::UserData).json_binary().not_null())
+    ///     .extra("USING columnar")
+    ///     .to_owned();
+    /// assert_eq!(
+    ///     table.to_string(PostgresQueryBuilder),
+    ///     [
+    ///         r#"CREATE TABLE "character" ("#,
+    ///         r#""id" uuid DEFAULT uuid_generate_v4() PRIMARY KEY NOT NULL,"#,
+    ///         r#""created_at" timestamp with time zone DEFAULT NOW() NOT NULL,"#,
+    ///         r#""user_data" jsonb NOT NULL"#,
+    ///         r#") USING columnar"#,
+    ///     ]
+    ///     .join(" ")
+    /// );
+    /// ```
+    pub fn extra<T>(&mut self, extra: T) -> &mut Self
+    where
+        T: Into<String>,
+    {
+        self.extra = Some(extra.into());
+        self
+    }
+
+    pub fn get_extra(&self) -> Option<&String> {
+        self.extra.as_ref()
+    }
+
     pub fn take(&mut self) -> Self {
         Self {
             table: self.table.take(),
@@ -285,6 +332,7 @@ impl TableCreateStatement {
             foreign_keys: std::mem::take(&mut self.foreign_keys),
             if_not_exists: self.if_not_exists,
             check: std::mem::take(&mut self.check),
+            extra: std::mem::take(&mut self.extra),
         }
     }
 }

src/tests_cfg.rs

@@ -23,6 +23,7 @@ pub enum Character {
     FontId,
     Ascii,
     CreatedAt,
+    UserData,
 }
 
 /// A shorthand for [`Character`]
@@ -43,6 +44,7 @@ impl Iden for Character {
                 Self::FontId => "font_id",
                 Self::Ascii => "ascii",
                 Self::CreatedAt => "created_at",
+                Self::UserData => "user_data",
             }
         )
         .unwrap();