query schema type, not accurate from go types

[aceforeverd]

openmldb-go-sdk/conn.go

Lines 141 to 147 in 2c5a00d

	// TODO(someone): Type infer from input slice does not work always. Consider those cases:
	// 1. a int type can be a int32 or int64, depends on value size.
	// 2. we're not covering more input types like uint.
	// 3. For a int16 or int32 input from DB.Query(...), it always convert to int64 because driver.Value
	// only expect int64 from primitive types.
	//
	// A better approach is to ask the schema types from api server, which in turn ask types info to SQL compiler.