Add new mvcc_checkpoint_threshold pragma name

core/pragma.rs

@@ -127,6 +127,10 @@ pub fn pragma_for(pragma: &PragmaName) -> Pragma {
             PragmaFlags::Result0 | PragmaFlags::SchemaReq | PragmaFlags::NoColumns1,
             &["cipher"],
         ),
+        PragmaName::MvccCheckpointThreshold => Pragma::new(
+            PragmaFlags::NoColumns1 | PragmaFlags::Result0,
+            &["mvcc_checkpoint_threshold"],
+        ),
     }
 }
 

parser/src/ast.rs

@@ -1449,6 +1449,8 @@ pub enum PragmaName {
     UserVersion,
     /// trigger a checkpoint to run on database(s) if WAL is enabled
     WalCheckpoint,
+    /// Sets or queries the threshold (in bytes) at which MVCC triggers an automatic checkpoint.
+    MvccCheckpointThreshold,
 }
 
 /// `CREATE TRIGGER` time