utf8mb4

问题 I have a MySQL dump, which I tried to restore with: mysql -u"username" -p"password" --host="127.0.0.1" mysql_db < mysql_db However, this threw an error: ERROR 1115 (42000) at line 3231: Unknown character set: 'utf8mb4' This is lines 3231-3233: /*!50003 SET character_set_client = utf8mb4 */ ; /*!50003 SET character_set_results = utf8mb4 */ ; /*!50003 SET collation_connection = utf8mb4_general_ci */ ; I am using MySQL 5.1.69. How can I solve this error? 回答1: Your version does not support that

问题 We are developing an iPhone app that would send emoticons from iPhone to server-side PHP and insert into MySQL tables. I am doing the server-side work. But after insert statement executed successfully, the inserted value become blank. What I could insert into the field(varchar) correctly is text, but once including emoticons, just the text could be inserted and the emoticons would be cut automatically. Someone give me advice about set the field type to Blog so that it could store image data.

问题 We are developing an iPhone app that would send emoticons from iPhone to server-side PHP and insert into MySQL tables. I am doing the server-side work. But after insert statement executed successfully, the inserted value become blank. What I could insert into the field(varchar) correctly is text, but once including emoticons, just the text could be inserted and the emoticons would be cut automatically. Someone give me advice about set the field type to Blog so that it could store image data.

问题 I am using mysql 5.5.10, and its character_sets are | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | utf8mb4 | | character_set_server | utf8mb4 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | | collation_connection | utf8mb4_general_ci | | collation_database | utf8mb4_general_ci | | collation_server | utf8mb4_general_ci | I changed

问题 I am using mysql 5.5.10, and its character_sets are | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | utf8mb4 | | character_set_server | utf8mb4 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | | collation_connection | utf8mb4_general_ci | | collation_database | utf8mb4_general_ci | | collation_server | utf8mb4_general_ci | I changed

问题 This is how my connection is set: Connection conn = DriverManager.getConnection(url + dbName + "?useUnicode=true&characterEncoding=utf-8", userName, password); And I'm getting the following error when tyring to add a row to a table: Incorrect string value: '\xF0\x90\x8D\x83\xF0\x90...' for column 'content' at row 1 I'm inserting thousands of records, and I always get this error when the text contains \xF0 (i.e. the the incorrect string value always starts with \xF0). The column's collation is

问题 I have a model: class Trophy(models.Model): server = models.CharField(max_length=191, blank=True) title = models.CharField(max_length=191, blank=True) note = models.TextField(blank=True) badge = models.CharField(max_length=191) badge - is a field for unicode characters like 🐲 or 💎 or 🔝 or ☔️ or 💯 etc... I have three trophies in database: Dragon (badge=🐲) Antiaircrafter (badge=☔️) Diamond player (badge=💎) I have not problem to get trophy with badge ☔️: trophy = Trophy.objects.get(badge=u"☔️")

问题 Note: In the following question you may see ? or blocks instead of characters, this is because you don't have the appropriate font. Please ignore this. Background I have a table with data structured as follows: CREATE TABLE `decomposition_dup` ( `id` int(11) NOT NULL AUTO_INCREMENT, `parent` varchar(50) COLLATE utf8mb4_unicode_ci NOT NULL, `structure` varchar(50) COLLATE utf8mb4_unicode_ci NOT NULL, `child` varchar(50) COLLATE utf8mb4_unicode_ci NOT NULL, PRIMARY KEY (`id`), KEY `parent` (

问题 Hi I'm looking for a encode function for utf8mb4, $var = = "نور"; echo utf8mb4_encode($string); output = نور // its $var output in UTFMB4 The output should be "نور" this, its a conversion of $var in utfmb4 回答1: The return value of the mb_convert_encoding function could give you the desired result. $string = "نور"; $result = mb_convert_encoding($string, 'UTF-8', 'Windows-1252'); //$result = mb_convert_encoding($string, 'UTF-8', 'Windows-1254'); echo $result; 回答2: mb_convert_encoding is

问题 Whether I try to open the stored procedures or create a new one SQLYog is giving the following error: COLLATION 'utf8_bin' is not valid for CHARACTER SET 'utf8mb4' They can execute correctly from the server, but on SQLYog they keep giving this error code. I temporarily solved the issue with SET collation_connection = @@collation_database; but I was wondering if there's a more permanent solution? 回答1: From SQLyog: SET NAMES 'utf8mb4' COLLATE 'utf8_bin'; Error Code: 1253 COLLATION 'utf8_bin' is