Prisma DateTime
Does the Prisma DateTime type make the DB use more storage than just storing a unix time when using MongoDB? Since its stored as a full date string.
2 Replies
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Based on the knowledge sources provided, there isn't enough specific information to definitively answer whether Prisma's DateTime type uses more storage than storing a Unix timestamp. However, I can provide some relevant insights:
1. The storage format for DateTime fields can vary depending on the database being used with Prisma. For example:
- In PostgreSQL, DateTime is mapped to the
timestamp(3) type by default Prisma schema reference.
- In SQLite, DateTime is stored as NUMERIC or STRING Prisma schema reference.
2. For SQLite specifically, there's an open issue discussing how Prisma handles date/time storage:
Handle lack of SQLite date/time datatype
This issue mentions that SQLite stores dates/times as TEXT, REAL, or INTEGER, and the format depends on the data type used.
3. There's another open issue discussing how Prisma stores DateTime values in SQLite:
Prisma should support SQLite's default date format
This issue suggests that Prisma Client inserts Unix timestamps for DateTime fields in SQLite, which contradicts the assumption in your question about storing full date strings.
Given this information, it's not accurate to assume that Prisma always stores DateTime as a full date string. The storage method and consequent space usage can vary depending on the database system and potentially Prisma's implementation for that system.
To get a definitive answer about storage efficiency, you would need to consider the specific database you're using and possibly conduct benchmarks to compare storage usage between Prisma's DateTime implementation and a Unix timestamp approach for your particular use case.
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Storage difference would be negligible in both cases, if you decide to store unix time or a date string, both would take up around 8 bytes.