Hi all, I'm facing very slow opening of project files for a customer here in QGIS 3.4.5. Something like 7 minutes, against 30 s in QGIS 2.18.
We are still investigating to narrow it down, but I faced a first query in the logs that I fail to understand. QGIS emits this at a point: select count(*) from information_schema.tables where table_name = 'qgis_editor_widget_styles' ; And this query is long in our context, 1.7s, because of a very high number of tables and schemas in that production DB. I found at [0] in the postgres provider where it comes from, I found the associated PR [1], but I fail to understand in what workflow this table is created using QGIS, and what it is used for. Can someone put some light here ? Best regards Régis [0] https://github.com/qgis/QGIS/blob/master/src/providers/postgres/qgspostgresprovider.cpp#L1083 [1] https://github.com/qgis/QGIS/pull/3439
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