fix: functions migrations

src/main/resources/sql/migration/createFunctionShema.sql

@@ -9,5 +9,3 @@ CREATE TABLE IF NOT EXISTS migration.functions
     down        text                    NOT NULL,
     version     int                     NOT NULL
 );
-
-CREATE SEQUENCE IF NOT EXISTS migration.version_seq;

src/main/resources/sql/migration/getNextVersion.sql

@@ -1 +0,0 @@
-SELECT nextval('migration.version_seq');

src/main/resources/sql/migration/insertFunction.sql

@@ -1,3 +1,7 @@
 INSERT INTO migration.functions as f (filename, definition, executed_at, up, down, version)
-VALUES (?, ?, now(), ?, ?, ?)
+VALUES (?, ?, now(), ?, ?, (
+    select coalesce(max(version), 0)+1
+    from migration.functions f2
+    where filename = f2.filename
+))
 RETURNING to_json(f);

src/main/resources/sql/migration/insertHistory.sql

@@ -1,3 +1,7 @@
 INSERT INTO migration.history as h (filename, executed_at, up, down, version)
-VALUES (?, now(), ?, ?, nextval('migration.version_seq'))
+VALUES (?, now(), ?, ?, (
+    select coalesce(max(version), 0)+1
+    from migration.history f2
+    where filename = f2.filename
+))
 RETURNING to_json(h);