fix postgres views, closes #206 (#222)

cashu/mint/ledger.py

@@ -692,6 +692,7 @@ class Ledger:
             logger.trace("setting proofs pending")
             await self._set_proofs_pending(proofs, conn)
             logger.trace(f"set proofs as pending")
+        logger.trace("unlocked table proofs_pending")
 
         try:
             await self._verify_proofs(proofs)
@@ -754,6 +755,7 @@ class Ledger:
                 logger.trace("unsetting proofs as pending")
                 await self._unset_proofs_pending(proofs, conn)
                 logger.trace(f"unset proofs as pending")
+            logger.trace("unlocked table proofs_pending")
 
         return status, preimage, return_promises
 

cashu/mint/migrations.py

@@ -57,10 +57,10 @@ async def m001_initial(db: Database):
         f"""
         CREATE VIEW {table_with_schema(db, 'balance_issued')} AS
         SELECT COALESCE(SUM(s), 0) AS balance FROM (
-            SELECT SUM(amount) AS s
+            SELECT SUM(amount)
             FROM {table_with_schema(db, 'promises')}
             WHERE amount > 0
-        );
+        ) AS s;
     """
     )
 
@@ -68,21 +68,21 @@ async def m001_initial(db: Database):
         f"""
         CREATE VIEW {table_with_schema(db, 'balance_redeemed')} AS
         SELECT COALESCE(SUM(s), 0) AS balance FROM (
-            SELECT SUM(amount) AS s
+            SELECT SUM(amount)
             FROM {table_with_schema(db, 'proofs_used')}
             WHERE amount > 0
-        );
+        )  AS s;
     """
     )
 
     await db.execute(
         f"""
         CREATE VIEW {table_with_schema(db, 'balance')} AS
-        SELECT s_issued - s_used AS balance FROM (
+        SELECT s_issued - s_used FROM (
             SELECT bi.balance AS s_issued, bu.balance AS s_used
             FROM {table_with_schema(db, 'balance_issued')} bi
             CROSS JOIN {table_with_schema(db, 'balance_redeemed')} bu
-        );
+        )  AS balance;
     """
     )