diff --git a/sql/all_elements.pgsql b/sql/all_elements.pgsql
deleted file mode 100644
index 304dd61..0000000
--- a/sql/all_elements.pgsql
+++ /dev/null
@@ -1,4 +0,0 @@
-SELECT user_id, arrow_id as elt_id, time, 'arrow' as elt FROM arrowclicked
-UNION
-SELECT user_id, coin_id, time, 'coin' FROM coinclicked
-ORDER BY time;
diff --git a/sql/first_user_only.pgsql b/sql/first_user_only.pgsql
index 1bf4ed0..38a987d 100644
--- a/sql/first_user_only.pgsql
+++ b/sql/first_user_only.pgsql
@@ -1,7 +1,8 @@
-DELETE FROM arrowclicked        WHERE user_id > 1;
-DELETE FROM coinclicked         WHERE user_id > 1;
-DELETE FROM keyboardevent       WHERE user_id > 1;
-DELETE FROM resetclicked        WHERE user_id > 1;
-DELETE FROM previousnextclicked WHERE user_id > 1;
-DELETE FROM hovered             WHERE user_id > 1;
-DELETE FROM users               WHERE id      > 1;
+DELETE FROM arrowclicked        WHERE exp_id > 1;
+DELETE FROM coinclicked         WHERE exp_id > 1;
+DELETE FROM keyboardevent       WHERE exp_id > 1;
+DELETE FROM resetclicked        WHERE exp_id > 1;
+DELETE FROM previousnextclicked WHERE exp_id > 1;
+DELETE FROM hovered             WHERE exp_id > 1;
+DELETE FROM experiment          WHERE id     > 1;
+DELETE FROM users               WHERE id     > 1;