Support of Enum within Tuple?

[nick1ee]

Hi,
I encountered an issue where declaring an enum field within a tuple causes a System.ArgumentOutOfRangeException during EnumType.Parse when performing bulk insertion.

EnumType.cs (line: 32)

If I leave my code unchanged and only modify the table schema to replace the enum within the tuple with a string, the same code executes successfully, and the data is written without errors.

It seems like a bug. Could it be that type parsing for enums within tuples is currently unsupported or has limitations?

Environment:
.net 8.0 + clickhouse.client 6.8.1
clickhouse version: 24.8.4.13

CREATE TABLE demo.product ON CLUSTER 'default'
(
    shop String,
    product String,
    property Tuple(title String, description String, status Enum8('Active' = 0, 'Inactive' = 1)),
    updated_at DateTime64(3, 'UTC')
)
ENGINE = ReplicatedReplacingMergeTree(updated_at)
ORDER BY (shop, product)
SETTINGS clean_deleted_rows = 'Always', index_granularity = 8192;

string[] columnNames = ["shop", "product", "property", "updated_at"];
await using var conn = new ClickHouseConnection(_connectionString);
await conn.OpenAsync();
using ClickHouseBulkCopy bulkCopy = new(conn)
{
    DestinationTableName = "demo.product",
    ColumnNames = columnNames,
    BatchSize = 10000
};

IEnumerable<object[]> data = models
    .GroupBy(m => (m.Shop, m.Product, m.UpdatedAt))
    .Select(g => new object[]
    {
        g.Key.Shop,
        g.Key.Product,
        g.Select(v => new Tuple<string, string, string,>(v.Title, v.Description, v.Status)).ToList(),
        g.Key.UpdatedAt
    });

await bulkCopy.InitAsync();
await bulkCopy.WriteToServerAsync(data);
await conn.CloseAsync();