diff --git a/migrations/20240727123308_initial.sql b/migrations/20240727123308_initial.sql
index 9694063..7275a51 100644
--- a/migrations/20240727123308_initial.sql
+++ b/migrations/20240727123308_initial.sql
@@ -5,11 +5,11 @@ CREATE TABLE IF NOT EXISTS tests
     id          serial               NOT NULL,
     problem_id  INT                  NOT NULL,
 
-    PRIMARY KEY (id),
+    PRIMARY KEY (id)
 );
 
-CREATE INDEX ON users USING B-TREE (id);
-CREATE INDEX ON users USING B-TREE (problem_id);
+CREATE INDEX ON tests USING BTREE (id);
+CREATE INDEX ON tests USING BTREE (problem_id);
 
 
 
@@ -23,7 +23,7 @@ CREATE TABLE IF NOT EXISTS languages
     created_at         TIMESTAMPTZ          NOT NULL DEFAULT NOW(),
     updated_at         TIMESTAMPTZ          NOT NULL DEFAULT NOW(),
 
-    PRIMARY KEY (id),
+    PRIMARY KEY (id)
 );
 
 
@@ -47,20 +47,18 @@ EXECUTE PROCEDURE lng_upd_trg_fn();
 CREATE TABLE IF NOT EXISTS solutions
 (
     id            serial               NOT NULL,
-    user_id       INT                  REFERENCES users ON DELETE CASCADE,
+    user_id       INT                  NOT NULL,
     problem_id    INT                  REFERENCES problems ON DELETE CASCADE,
     language_id   INT                  REFERENCES languages ON DELETE CASCADE,
     contest_id    INT                  NOT NULL,
     solution_hash CHAR(128)            NOT NULL,
     created_at    TIMESTAMPTZ          NOT NULL DEFAULT NOW(),
 
-    PRIMARY KEY (id),
-    CHECK (length(name) != 0),
-    CHECK (length(description) != 0)
+    PRIMARY KEY (id)
 );
 
-CREATE INDEX ON users USING B-TREE (id);
-CREATE INDEX ON users USING B-TREE (id,user_id,problem_id,language_id);
+CREATE INDEX ON solutions USING BTREE (id);
+CREATE INDEX ON solutions USING BTREE (id,user_id,problem_id,language_id);
 
 -- +goose StatementEnd