修复统一err

5.4.md

@@ -51,33 +51,33 @@ package main
 		checkErr(err)
 
 		//插入数据
-		stmt, errs := db.Prepare("INSERT INTO userinfo(username,departname,created) VALUES($1,$2,$3) RETURNING uid")
-		checkErr(errs)
+		stmt, err := db.Prepare("INSERT INTO userinfo(username,departname,created) VALUES($1,$2,$3) RETURNING uid")
+		checkErr(err)
 
-		res, errres := stmt.Exec("astaxie", "研发部门", "2012-12-09")
-		checkErr(errres)
+		res, err := stmt.Exec("astaxie", "研发部门", "2012-12-09")
+		checkErr(err)
 
 		//pg不支持这个函数，因为他没有类似MySQL的自增ID
-		id, errid := res.LastInsertId()
-		checkErr(errid)
+		id, err := res.LastInsertId()
+		checkErr(err)
 
 		fmt.Println(id)
 
 		//更新数据
-		stmt, errs = db.Prepare("update userinfo set username=$1 where uid=$2")
-		checkErr(errs)
+		stmt, err = db.Prepare("update userinfo set username=$1 where uid=$2")
+		checkErr(err)
 
-		res, errres = stmt.Exec("astaxieupdate", 1)
-		checkErr(errres)
+		res, err = stmt.Exec("astaxieupdate", 1)
+		checkErr(err)
 
-		affect, erraff := res.RowsAffected()
-		checkErr(erraff)
+		affect, err := res.RowsAffected()
+		checkErr(err)
 
 		fmt.Println(affect)
 
 		//查询数据
-		rows, errrow := db.Query("SELECT * FROM userinfo")
-		checkErr(errrow)
+		rows, err := db.Query("SELECT * FROM userinfo")
+		checkErr(err)
 
 		for rows.Next() {
 			var uid int
@@ -93,14 +93,14 @@ package main
 		}
 
 		//删除数据
-		stmt, errrow = db.Prepare("delete from userinfo where uid=$1")
-		checkErr(errrow)
+		stmt, err = db.Prepare("delete from userinfo where uid=$1")
+		checkErr(err)
 
-		res, errres = stmt.Exec(1)
-		checkErr(errres)
+		res, err = stmt.Exec(1)
+		checkErr(err)
 
-		affect, erraff = res.RowsAffected()
-		checkErr(erraff)
+		affect, err = res.RowsAffected()
+		checkErr(err)
 
 		fmt.Println(affect)