diff --git a/sql/2017-03-31-earnings_index.sql b/sql/2017-03-31-earnings_index.sql
new file mode 100644
index 0000000..b2a0b4e
--- /dev/null
+++ b/sql/2017-03-31-earnings_index.sql
@@ -0,0 +1,5 @@
+-- Recent additions to add after db init (.gz)
+-- mysql yaamp -p < file.sql
+
+ALTER TABLE `earnings` ADD UNIQUE INDEX `ndx_user_block`(`userid`, `blockid`);
+