Mysql: Add SRID column option

Add support for Mysql geometric `SRID {int}` column def in
create table statements.

Author: MohamedAbdeen21

src/ast/ddl.rs

@@ -1758,6 +1758,13 @@ pub enum ColumnOption {
     /// ```
     /// [Snowflake]: https://docs.snowflake.com/en/sql-reference/sql/create-table
     Tags(TagsColumnOption),
+    /// MySQL specific: Spatial reference identifier
+    /// Syntax:
+    /// ```sql
+    /// CREATE TABLE geom (g GEOMETRY NOT NULL SRID 4326);
+    /// ```
+    /// [MySQL]: https://dev.mysql.com/doc/refman/8.4/en/creating-spatial-indexes.html
+    Srid(Expr),
 }
 
 impl fmt::Display for ColumnOption {
@@ -1873,6 +1880,9 @@ impl fmt::Display for ColumnOption {
             Tags(tags) => {
                 write!(f, "{tags}")
             }
+            Srid(srid) => {
+                write!(f, "SRID {srid}")
+            }
         }
     }
 }

src/ast/spans.rs

@@ -871,6 +871,7 @@ impl Spanned for ColumnOption {
             ColumnOption::OnConflict(..) => Span::empty(),
             ColumnOption::Policy(..) => Span::empty(),
             ColumnOption::Tags(..) => Span::empty(),
+            ColumnOption::Srid(..) => Span::empty(),
         }
     }
 }

src/keywords.rs

@@ -844,6 +844,7 @@ define_keywords!(
     SQLSTATE,
     SQLWARNING,
     SQRT,
+    SRID,
     STABLE,
     STAGE,
     START,

src/parser/mod.rs

@@ -7754,6 +7754,10 @@ impl<'a> Parser<'a> {
             && dialect_of!(self is MySqlDialect | SQLiteDialect | DuckDbDialect | GenericDialect)
         {
             self.parse_optional_column_option_as()
+        } else if self.parse_keyword(Keyword::SRID)
+            && dialect_of!(self is MySqlDialect | GenericDialect)
+        {
+            Ok(Some(ColumnOption::Srid(self.parse_expr()?)))
         } else if self.parse_keyword(Keyword::IDENTITY)
             && dialect_of!(self is MsSqlDialect | GenericDialect)
         {
@@ -16577,6 +16581,20 @@ mod tests {
         }
     }
 
+    #[test]
+    fn test_mysql_srid_create_table() {
+        let sql = r#"CREATE TABLE t (a geometry SRID 4326)"#;
+        let ast: Vec<Statement> = Parser::parse_sql(&MySqlDialect {}, sql).unwrap();
+
+        assert_eq!(ast.len(), 1);
+        if let Statement::CreateTable(v) = &ast[0] {
+            assert_eq!(
+                v.columns[0].options[0].option,
+                ColumnOption::Srid(Expr::value(Value::Number("4326".to_string(), false)))
+            );
+        }
+    }
+
     #[test]
     fn test_replace_into_placeholders() {
         let sql = "REPLACE INTO t (a) VALUES (&a)";