database - 我可以用哪种格式存储 golang 的 time.Time 在 scylladb 中？

Question

我想知道scylladb中哪种格式的数据类型可以保存golang的time.Time值。我试过使用“时间”类型，但它会产生错误。 这是我收到的错误:

can not marshal time.Time into time

Answer 1

查看 Golang 的 Marshal function 文档.不确定您的时间在 Cassandra 表中是如何定义的，但时间类型的条目如下所示:

CQL Type                    | Go Type
---------------------------------------------------------------------------------
time                        | int64              | nanoseconds since start of day
time                        | time.Duration      | duration since start of day
timestamp                   | int64              | milliseconds since Unix epoch
timestamp                   | time.Time          |
uuid, timeuuid              | gocql.UUID         |
uuid, timeuuid              | [16]byte           | raw UUID bytes
uuid, timeuuid              | []byte             | raw UUID bytes, length must be 16 bytes
uuid, timeuuid              | string             | hex representation, see ParseUUID
date                        | int64              | milliseconds since Unix epoch to start of day (in UTC)
date                        | time.Time          | start of day (in UTC)
date                        | string             | parsed using "2006-01-02" format
duration                    | int64              | duration in nanoseconds
duration                    | time.Duration      |
duration                    | gocql.Duration     |
duration                    | string             | parsed with time.ParseDuration

鉴于此，您应该能够使用 timestamp 或 date 作为 time.Time。