Restrain JSON_TABLE table function parsing to MySqlDialect and AnsiDialect

src/parser/mod.rs

@@ -7503,10 +7503,10 @@
             Ok(TableFactor::UNNEST {
                 alias,
                 array_exprs,
                 with_offset,
                 with_offset_alias,
             })
-        } else if self.parse_keyword(Keyword::JSON_TABLE) {
+        } else if dialect_of!(self is MySqlDialect | AnsiDialect) && self.parse_keyword(Keyword::JSON_TABLE) {
             self.expect_token(&Token::LParen)?;
             let json_expr = self.parse_expr()?;
             self.expect_token(&Token::Comma)?;

tests/sqlparser_common.rs

@@ -8407,3 +8407,22 @@
     p.parse_statements().unwrap();
     let _ = p.into_tokens();
 }
+
+#[test]
+fn parse_json_table_err() {
+    let unsupported_dialects = all_dialects_except(|d| d.is::<AnsiDialect>() || d.is::<MySqlDialect>());
+
+    // JSON_TABLE table function is not supported in the above dialects.
+    assert!(unsupported_dialects
+        .parse_sql_statements("SELECT * FROM JSON_TABLE('[[1, 2], [3, 4]]', '$[*]' COLUMNS(a INT PATH '$[0]', b INT PATH '$[1]')) AS t")
+        .is_err());
+}
+
+#[test]
+fn parse_json_table_as_identifier() {
+    let supported_dialects = all_dialects_except(|d| d.is::<AnsiDialect>() || d.is::<MySqlDialect>());
+
+    assert!(supported_dialects
+        .parse_sql_statements("SELECT * FROM json_table")
+        .is_ok());
+}