From e5deeda0aa2901014827aea16f5212878ff80208 Mon Sep 17 00:00:00 2001 From: Jason Song Date: Sat, 31 Dec 2022 02:25:58 +0800 Subject: [PATCH] Support estimated count with multiple schemas (#22276) The `EstimateCount` could be incorrect when the table lives in multiple schemas. Related to #19775. --- models/db/context.go | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/models/db/context.go b/models/db/context.go index c8ad0c1aa2..3db8b16528 100644 --- a/models/db/context.go +++ b/models/db/context.go @@ -188,7 +188,10 @@ func EstimateCount(ctx context.Context, bean interface{}) (int64, error) { case schemas.MYSQL: _, err = e.Context(ctx).SQL("SELECT table_rows FROM information_schema.tables WHERE tables.table_name = ? AND tables.table_schema = ?;", tablename, x.Dialect().URI().DBName).Get(&rows) case schemas.POSTGRES: - _, err = e.Context(ctx).SQL("SELECT reltuples AS estimate FROM pg_class WHERE relname = ?;", tablename).Get(&rows) + // the table can live in multiple schemas of a postgres database + // See https://wiki.postgresql.org/wiki/Count_estimate + tablename = x.TableName(bean, true) + _, err = e.Context(ctx).SQL("SELECT reltuples::bigint AS estimate FROM pg_class WHERE oid = ?::regclass;", tablename).Get(&rows) case schemas.MSSQL: _, err = e.Context(ctx).SQL("sp_spaceused ?;", tablename).Get(&rows) default: