use a "dummy" error

Author: maxcountryman

src/parser.rs

@@ -203,17 +203,17 @@ impl Parser {
         // expression that should parse as the column name "date".
         return_ok_if_some!(self.maybe_parse(|parser| {
             match parser.parse_data_type()? {
-            DataType::Interval => parser.parse_literal_interval(),
-            // Single-quoted strings are parsed as custom data types, however this not desirable
-            // when we are handling input like `"NOT 'a' NOT LIKE 'b'"` because this will produce a
-            // TypedString instead of a SingleQuotedString. Further, this leads to issues where the
-            // same input will yield a BinaryOperator instead of the correct UnaryOperator. Here we
-            // handle that specific case by returning an error.
-            DataType::Custom(..) => Err(ParserError::ParserError("".to_string())),
-            data_type => Ok(Expr::TypedString {
-                data_type,
-                value: parser.parse_literal_string()?,
-            }),
+                DataType::Interval => parser.parse_literal_interval(),
+                // Single-quoted strings are parsed as custom data types, however this not desirable
+                // when we are handling input like `"NOT 'a' NOT LIKE 'b'"` because this will produce a
+                // TypedString instead of a SingleQuotedString. Further, this leads to issues where the
+                // same input will yield a BinaryOperator instead of the correct UnaryOperator. Here we
+                // handle that specific case by returning an error.
+                DataType::Custom(..) => parser_err!("dummy"),
+                data_type => Ok(Expr::TypedString {
+                    data_type,
+                    value: parser.parse_literal_string()?,
+                }),
             }
         }));