fix: store raw objname internally (#2719)

* fix: store raw objname internally

Signed-off-by: tison <wander4096@gmail.com>

* add a utility

Signed-off-by: tison <wander4096@gmail.com>

* add a sqlness test case

Signed-off-by: tison <wander4096@gmail.com>

* cargo clippy

Signed-off-by: tison <wander4096@gmail.com>

---------

Signed-off-by: tison <wander4096@gmail.com>

src/sql/src/statements/describe.rs

@@ -39,6 +39,7 @@ mod tests {
     use crate::dialect::GreptimeDbDialect;
     use crate::parser::ParserContext;
     use crate::statements::statement::Statement;
+    use crate::util::format_raw_object_name;
 
     #[test]
     pub fn test_describe_table() {
@@ -49,7 +50,7 @@ mod tests {
         assert_matches!(&stmts[0], Statement::DescribeTable { .. });
         match &stmts[0] {
             Statement::DescribeTable(show) => {
-                assert_eq!(show.name.to_string(), "test");
+                assert_eq!(format_raw_object_name(&show.name), "test");
             }
             _ => {
                 unreachable!();
@@ -66,7 +67,7 @@ mod tests {
         assert_matches!(&stmts[0], Statement::DescribeTable { .. });
         match &stmts[0] {
             Statement::DescribeTable(show) => {
-                assert_eq!(show.name.to_string(), "test_schema.test");
+                assert_eq!(format_raw_object_name(&show.name), "test_schema.test");
             }
             _ => {
                 unreachable!();
@@ -83,7 +84,10 @@ mod tests {
         assert_matches!(&stmts[0], Statement::DescribeTable { .. });
         match &stmts[0] {
             Statement::DescribeTable(show) => {
-                assert_eq!(show.name.to_string(), "test_catalog.test_schema.test");
+                assert_eq!(
+                    format_raw_object_name(&show.name),
+                    "test_catalog.test_schema.test"
+                );
             }
             _ => {
                 unreachable!();

src/sql/src/util.rs

@@ -13,10 +13,11 @@
 // limitations under the License.
 
 use std::collections::HashMap;
+use std::fmt::{Display, Formatter};
 use std::sync::LazyLock;
 
 use regex::Regex;
-use sqlparser::ast::{SqlOption, Value};
+use sqlparser::ast::{ObjectName, SqlOption, Value};
 
 static SQL_SECRET_PATTERNS: LazyLock<Vec<Regex>> = LazyLock::new(|| {
     vec![
@@ -25,6 +26,27 @@ static SQL_SECRET_PATTERNS: LazyLock<Vec<Regex>> = LazyLock::new(|| {
     ]
 });
 
+/// Format an [ObjectName] without any quote of its idents.
+pub fn format_raw_object_name(name: &ObjectName) -> String {
+    struct Inner<'a> {
+        name: &'a ObjectName,
+    }
+
+    impl<'a> Display for Inner<'a> {
+        fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+            let mut delim = "";
+            for ident in self.name.0.iter() {
+                write!(f, "{delim}")?;
+                delim = ".";
+                write!(f, "{}", ident.value)?;
+            }
+            Ok(())
+        }
+    }
+
+    format!("{}", Inner { name })
+}
+
 pub fn parse_option_string(value: Value) -> Option<String> {
     match value {
         Value::SingleQuotedString(v) | Value::DoubleQuotedString(v) => Some(v),