ClickHouse / clickhouse-odbc

ODBC driver for ClickHouse

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Floats get rounded if handled as String

kylhuk opened this issue · comments

Currently have a setup, where I connect to an Oracle DB via Clickhouse ODBC and I just came across a very strange issue. Not sure yet if this is a bug or feature.

If I query the Oracle DB via ODBC, I usually set up the tables where all columns are set as string, due to the fact that Oracle has like 1824728 data types and I simply do not care about them yet. Then I realized that the numbers were odd, to be more precise, they were correctly rounded from a real number to an integer number.

When I set the data type to Float32, the value gets represented correctly

		|			|		|		|
		| Original Oracle DB	| Clickhouse	| Clickhouse	|
		|-----------------------|---------------|---------------|
Data Type	| Number		| String	| Float32	|
Value		| 32.86			| 33		| 32.86		|
		---------------------------------------------------------
					   ^
					   | This should not be 33

Is that a bug or a feature? Any ideas?