sql_generation: Add support for DROP INDEX

sql_generation/model/query/drop_index.rs

@@ -0,0 +1,12 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
+pub struct DropIndex {
+    pub index_name: String,
+}
+
+impl std::fmt::Display for DropIndex {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "DROP INDEX {}", self.index_name)
+    }
+}

sql_generation/model/query/mod.rs

@@ -2,6 +2,7 @@ pub use create::Create;
 pub use create_index::CreateIndex;
 pub use delete::Delete;
 pub use drop::Drop;
+pub use drop_index::DropIndex;
 pub use insert::Insert;
 pub use select::Select;
 
@@ -9,6 +10,7 @@ pub mod create;
 pub mod create_index;
 pub mod delete;
 pub mod drop;
+pub mod drop_index;
 pub mod insert;
 pub mod predicate;
 pub mod select;