FIX: create_db.sql for varchar size

@@ -4,43 +4,43 @@ USE mamuri_db;
 
 CREATE TABLE user
 (
-    id      INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    id      INT AUTO_INCREMENT PRIMARY KEY,
     user_id INT NOT NULL
 );
 
 CREATE TABLE keyword
 (
-    id      INT     NOT NULL AUTO_INCREMENT PRIMARY KEY,
-    keyword VARCHAR NULL
+    id      INT AUTO_INCREMENT PRIMARY KEY,
+    keyword VARCHAR(150) NULL
 );
 
 CREATE TABLE user_keyword
 (
-    id         INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    id         INT AUTO_INCREMENT PRIMARY KEY,
     user_id    INT NOT NULL,
     keyword_id INT NOT NULL,
     FOREIGN KEY (user_id) REFERENCES user (id) ON DELETE CASCADE,
-    FOREIGN KEY (keyword_id) REFERENCES keyword (id) ON DELETE CASCADE,
+    FOREIGN KEY (keyword_id) REFERENCES keyword (id) ON DELETE CASCADE
 );
 
 CREATE TABLE item
 (
-    id            INT      NOT NULL AUTO_INCREMENT PRIMARY KEY,
-    keyword_id    INT      NOT NULL,
-    platform      VARCHAR  NOT NULL,
-    name          VARCHAR  NOT NULL,
-    price         INT      NOT NULL,
-    thumbnail_url VARCHAR  NULL,
-    item_url      VARCHAR  NOT NULL,
-    extra_info    TEXT     NULL,
-    created_at    DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+    id            INT AUTO_INCREMENT PRIMARY KEY,
+    keyword_id    INT          NOT NULL,
+    platform      VARCHAR(50)  NOT NULL,
+    name          VARCHAR(100) NOT NULL,
+    price         INT          NOT NULL,
+    thumbnail_url VARCHAR(255) NULL,
+    item_url      VARCHAR(255) NOT NULL,
+    extra_info    TEXT         NULL,
+    created_at    DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 
 CREATE TABLE item_check
 (
-    id      INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    id      INT AUTO_INCREMENT PRIMARY KEY,
     item_id INT NULL,
     user_id INT NULL,
     FOREIGN KEY (item_id) REFERENCES item (id) ON DELETE CASCADE,
     FOREIGN KEY (user_id) REFERENCES user (id) ON DELETE CASCADE
-);
+);
\ No newline at end of file