Is there an equivalent to this T-SQL command in PostgreSQL?
SELECT COUNT(*)
FROM [dbo].[LayerTable]
where layerType=3
and created >= Dateadd(Month, Datediff(Month, 0, DATEADD(m, -6, current_timestamp))),0)
I have found date_part() and extract function() but not working.
Looks like this is simply subtracting 6 months from current_timestamp, so the equivalent would be:
SELECT COUNT(*)
FROM dbo.layer_table
where layer_type=3
and created >= current_timestamp - interval '6 months';
If you want the start of the month (rather than the "same" day as "today") as the result use:
created >= date_trunc('month', current_timestamp - interval '6 months')
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