Add suppport for Show Objects statement for the Snowflake parser (#1702)

Co-authored-by: Denys Tsomenko <denys.tsomenko@caspiandb.com>
Co-authored-by: Ifeanyi Ubah <ify1992@yahoo.com>

src/ast/mod.rs

@@ -3010,6 +3010,12 @@ pub enum Statement {
         show_options: ShowStatementOptions,
     },
     /// ```sql
+    /// SHOW OBJECTS LIKE 'line%' IN mydb.public
+    /// ```
+    /// Snowflake-specific statement
+    /// <https://docs.snowflake.com/en/sql-reference/sql/show-objects>
+    ShowObjects(ShowObjects),
+    /// ```sql
     /// SHOW TABLES
     /// ```
     ShowTables {
@@ -4703,6 +4709,17 @@ impl fmt::Display for Statement {
                 )?;
                 Ok(())
             }
+            Statement::ShowObjects(ShowObjects {
+                terse,
+                show_options,
+            }) => {
+                write!(
+                    f,
+                    "SHOW {terse}OBJECTS{show_options}",
+                    terse = if *terse { "TERSE " } else { "" },
+                )?;
+                Ok(())
+            }
             Statement::ShowTables {
                 terse,
                 history,
@@ -8343,6 +8360,14 @@ impl fmt::Display for ShowStatementIn {
     }
 }
 
+#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
+pub struct ShowObjects {
+    pub terse: bool,
+    pub show_options: ShowStatementOptions,
+}
+
 /// MSSQL's json null clause
 ///
 /// ```plaintext