add hints for postgres query planner

1 files changed, 6 insertions, 0 deletions

diff --git a/rust/src/api_server.rs b/rust/src/api_server.rs
index f7866b68..9239d63b 100644
--- a/rust/src/api_server.rs
+++ b/rust/src/api_server.rs
@@ -318,6 +318,9 @@ impl Server {
         let (ident, rev): (ContainerIdentRow, ContainerRevRow) = container_ident::table
             .inner_join(container_rev::table)
             .filter(container_rev::issnl.eq(issnl))
+            // This NOT NULL is here to ensure the postgresql query planner that it can use an
+            // index
+            .filter(container_rev::issnl.is_not_null())
             .filter(container_ident::is_live.eq(true))
             .filter(container_ident::redirect_id.is_null())
             .first(conn)?;
@@ -344,6 +347,9 @@ impl Server {
         let (ident, rev): (CreatorIdentRow, CreatorRevRow) = creator_ident::table
             .inner_join(creator_rev::table)
             .filter(creator_rev::orcid.eq(orcid))
+            // This NOT NULL is here to ensure the postgresql query planner that it can use an
+            // index
+            .filter(creator_rev::orcid.is_not_null())
             .filter(creator_ident::is_live.eq(true))
             .filter(creator_ident::redirect_id.is_null())
             .first(conn)?;