ClickHouse/docs/en/sql-reference/functions/ulid-functions.md
2023-04-19 17:05:55 +00:00

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/en/sql-reference/functions/ulid-functions 190 ULID

Functions for Working with ULID

generateULID

Generates the ULID.

Syntax

generateULID([x])

Arguments

Returned value

The FixedString type value.

Usage example

SELECT generateULID()
┌─generateULID()─────────────┐
│ 01GNB2S2FGN2P93QPXDNB4EN2R │
└────────────────────────────┘

Usage example if it is needed to generate multiple values in one row

SELECT generateULID(1), generateULID(2)
┌─generateULID(1)────────────┬─generateULID(2)────────────┐
│ 01GNB2SGG4RHKVNT9ZGA4FFMNP │ 01GNB2SGG4V0HMQVH4VBVPSSRB │
└────────────────────────────┴────────────────────────────┘

ULIDStringToDateTime

This function extracts the timestamp from a ULID.

Syntax

ULIDStringToDateTime(ulid[, timezone])

Arguments

Returned value

  • Timestamp with milliseconds precision.

Type: DateTime64(3).

Usage example

SELECT ULIDStringToDateTime('01GNB2S2FGN2P93QPXDNB4EN2R')
┌─ULIDStringToDateTime('01GNB2S2FGN2P93QPXDNB4EN2R')─┐
│                            2022-12-28 00:40:37.616 │
└────────────────────────────────────────────────────┘

See Also