Comments - MariaDB versus MySQL - Compatibility
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Can you check against more recent version of MySQL?
I have not tried .NET yet, however I do know it uses result set metadata to infer types. So I checked metadata, and for that I ran mysql command line client so it outputs result set metadata with (mysql --column-type-info )
"SELECT <Integer constant>" returns LONGLONG type for both MYSQL and MariaDB, that should translate to int64 if I understand correctly. I cannot comment on character set issues, because the description is not very specific.
mysql -uroot --column-type-info -e "select 1"
Field 1: `1` Catalog: `def` Database: `` Table: `` Org_table: `` Type: LONGLONG Collation: binary (63) Length: 1 Max_length: 1 Decimals: 0 Flags: NOT_NULL BINARY NUM
Addendum:
I tried now also Connector/NET test (latest version of C/NET) .
I ran MySQLCommand.ExecuteScalar() for command "SELECT 1", on both MariaDB and MYSQL, both on version 5.5.31.
In both cases the object returned by ExecuteScalar was System.Int64, which I also would expect. So, I do not see incompatibilities here.