LucaCappelletti94 opened a new pull request, #2484:
URL: https://github.com/apache/datafusion-sqlparser-rs/pull/2484
`PostgreSqlDialect` could not parse the `VARIADIC` argument marker in a
function call, in any position:
```rust
Parser::parse_sql(&PostgreSqlDialect {}, "SELECT concat(VARIADIC a)");
// Err: sql parser error: Expected: ), found: a at Line: 1, Column: 24
```
The marker is added as `FunctionArg::Variadic`. Parsing is gated on
`Dialect::supports_variadic_function_argument`, enabled for `PostgreSQL` and
the generic dialect.
As in `PostgreSQL`, the marker is rejected on a wildcard operand, in
combination with `DISTINCT` or `ALL`, and on any but the final argument.
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