can use "replace into table " on Prepare?

[blade83lee]

i use
tx.Prepare("REPLACE INTO t_device ON (as_num) VALUES")

return err:
prepare cannot get table name from query
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x38 pc=0x5057c3]
databend-v1.2.344