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“Variant” values structure and their use for multiple columns
note to the edit: the question originally was only about the opportunity of using a single "variant" structure for multiple columns, but all initial comments asked clarifications about the actual ...
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PostgreSQL equivalent of SQL Server SQL_VARIANT_PROPERTY
Does PostgreSQL have an equivalent function for determining column metadata?
Reference: SQL_VARIANT_PROPERTY
pg_typeof() appears to be close, but it does not show the precision and scale. Looking up ...
