Statement parser doesn't break on hyphen

[marekhanzlik]

Hi i have some problems when switching from Mysql.Data to MySqlConnector

var insertProductCmd = new MySqlCommand($"INSERT INTO {Tables.PlayerProductsTable} (product_id, player_id, product_count) VALUES (@productID, @playerID, 0) " + $"ON DUPLICATE KEY " + $"UPDATE product_count=GREATEST(0, product_count-@productCount)", conn, transaction);

This command throws an product_count cannot be null
This doesnt happen on MySql.Data, what am i missing?

Second problem is #562

[bgrainger]

Please provide a more complete sample (e.g., that shows parameter values, full exception message & call stack).

[marekhanzlik]

Whole command code

Exception MySql.Data.MySqlClient.MySqlException: 'Column 'product_count' cannot be null'
Parameter values are:
@productID = 1
@playerID = 597
@productCount = 11

Values in database

[bgrainger]

This is a bug in MySqlConnector's parameter interpolation logic. You can work around it for now by changing your statement to the following (adding spaces around the minus sign):

$"UPDATE product_count=GREATEST(0, product_count - @productCount)"

[marekhanzlik]

Thanks for info, i'll have to wait for fix instead of using workaround, this can show up on so many places in project it's not worth the risk of missing something

[bgrainger]

Fixed in 0.45.1.

[marekhanzlik]

Thank you very much 😊