Implement SQL query debugging in response output

src/dbs/executor.rs

@@ -109,6 +109,7 @@ impl<'a> Executor<'a> {
 
 	pub fn buf_cancel(&self, v: Response) -> Response {
 		Response {
+			sql: v.sql,
 			time: v.time,
 			status: Status::Err,
 			detail: Some(format!("Transaction cancelled")),
@@ -119,6 +120,7 @@ impl<'a> Executor<'a> {
 	pub fn buf_commit(&self, v: Response) -> Response {
 		match &self.err {
 			Some(_) => Response {
+				sql: v.sql,
 				time: v.time,
 				status: Status::Err,
 				detail: match v.status {
@@ -157,6 +159,7 @@ impl<'a> Executor<'a> {
 						"EVENT_QUERIES" => opt = opt.events(stm.what),
 						"TABLE_QUERIES" => opt = opt.tables(stm.what),
 						"IMPORT" => opt = opt.import(stm.what),
+						"DEBUG" => opt = opt.debug(stm.what),
 						_ => break,
 					}
 					continue;
@@ -249,6 +252,10 @@ impl<'a> Executor<'a> {
 			// Produce the response
 			let res = match res {
 				Ok(v) => Response {
+					sql: match opt.debug {
+						true => Some(format!("{}", stm)),
+						false => None,
+					},
 					time: format!("{:?}", dur),
 					status: Status::Ok,
 					detail: None,
@@ -257,6 +264,10 @@ impl<'a> Executor<'a> {
 				Err(e) => {
 					// Produce the response
 					let res = Response {
+						sql: match opt.debug {
+							true => Some(format!("{}", stm)),
+							false => None,
+						},
 						time: format!("{:?}", dur),
 						status: Status::Err,
 						detail: Some(format!("{}", e)),

src/dbs/options.rs

@@ -14,6 +14,7 @@ use crate::sql::version::Version;
 pub struct Options<'a> {
 	pub auth: &'a Auth,
 	pub dive: usize,                  // How many subqueries have we gone into?
+	pub debug: bool,                  // Should we debug query response SQL?
 	pub force: bool,                  // Should we force tables/events to re-run?
 	pub fields: bool,                 // Should we process field queries?
 	pub events: bool,                 // Should we process event queries?
@@ -34,6 +35,7 @@ impl<'a> Options<'a> {
 		Options {
 			auth,
 			dive: 0,
+			debug: false,
 			force: false,
 			fields: true,
 			events: true,
@@ -57,6 +59,14 @@ impl<'a> Options<'a> {
 		}
 	}
 
+	// Create a new Options object for a subquery
+	pub fn debug(&self, v: bool) -> Options<'a> {
+		Options {
+			debug: v,
+			..*self
+		}
+	}
+
 	// Create a new Options object for a subquery
 	pub fn force(&self, v: bool) -> Options<'a> {
 		Options {

src/dbs/response.rs

@@ -13,6 +13,8 @@ pub struct Responses(pub Vec<Response>);
 
 #[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
 pub struct Response {
+	#[serde(skip_serializing_if = "Option::is_none")]
+	pub sql: Option<String>,
 	pub time: String,
 	pub status: Status,
 	#[serde(skip_serializing_if = "Option::is_none")]