Обсуждение: GENERATED ALWAYS AS - Not Consistent with MD5

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Page: https://www.postgresql.org/docs/12/ddl-generated-columns.html
Description:

In my table definition - my Id Column is defined as ```Id TEXT PRIMARY KEY
GENERATED ALWAYS AS (MD5(date_part('epoch', Inv_Date)::TEXT || TerminalId ||
GradeId || Ownership_Code)) STORED,```

But the value generated is not consistent upon insertion.
To confirm we checked by generating MD5 on SELECT and comparing the Id,
they're two completely different values.

In my table definition - my Id Column is defined as ```Id TEXT PRIMARY KEY

GENERATED ALWAYS AS (MD5(date_part('epoch', Inv_Date)::TEXT || TerminalId ||

GradeId || Ownership_Code)) STORED,```

But the value generated is not consistent upon insertion.

To confirm we checked by generating MD5 on SELECT and comparing the Id,

they're two completely different values.