fix: update Comment table to replace DEFAULT CURRENT_DATE with DEFAULT...

webapp/backend/ddl/create-tables.sql

@@ -121,17 +121,18 @@ CREATE TABLE `Post`
 DROP TABLE IF EXISTS `Comment`;
 CREATE TABLE `Comment`
 (
-    `commentID`   INT  NOT NULL,
+    `commentID`   INT          NOT NULL AUTO_INCREMENT,
     `userID`      INT          NOT NULL,
     `postID`      INT          NOT NULL,
     `content`     TEXT         NULL,
-    `commentDate` DATE NULL DEFAULT CURRENT_DATE,
+    `commentDate` DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
     PRIMARY KEY (`commentID`),
     FOREIGN KEY (`userID`) REFERENCES `User` (`userID`),
     FOREIGN KEY (`postID`) REFERENCES `Post` (`postID`),
     INDEX `idx_comment_date` (`commentDate`)
 );
 
+
 -- UserCrew 테이블
 DROP TABLE IF EXISTS `UserCrew`;
 CREATE TABLE `UserCrew`