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Generic Functions

Surrogate Key Int64​

This function does not have a substrait definition.

warning

This function is experimental and may be subject to change.

Generates a unique int64 value for each combination of the "partition by" columns in an window function query. This can be used for instance when creating a SCD table where the partition by can be on both the primary key and date.

This is non-deterministic across replays of a full rerun of a stream.

SQL Usage​

SELECT
    surrogate_key_int64() OVER (PARTITION BY id, insertDate) as SK_MyKey,
    id,
    insertDate
FROM testtable