This is a common error when you try to insert value into a MySQL table that does not have a UTF8 encoding or character set. The feed is UTF-8. Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? If one client of your application uses UTF-8 encoding and another uses CP1252, you may have your emails sent with incorrect characters. Should teachers encourage good students to help weaker ones? Assuming you are using phpmyadmin to solve this error, follow these steps: Its mostly caused due to some unicode characters. First of all, does by changing code page anyone got solution. no Emoji, no astral plane, etc.). Remove the overheating lamp from your car and you will see. How did muzzle-loaded rifled artillery solve the problems of the hand-held rifle? I know this is not a solution yet this might help somebody to identify the problem quickly or give a temporary solution. for example you type info like this. At first you must save a dump. Find centralized, trusted content and collaborate around the technologies you use most. convert back to Unicode post save/update/load from database. You would not fix your problem but try to "hide" it and not being able to perform essential database operations with the crapped data. @Richie: The database can happily call the data whatever it wants, but if the php code that grabs it is stuffing it into a string, that won't make much differencewill it? UTF-8) across all your applications. modify my.cnf like the following and restart MySQL: this can make sure the database and character_set_client, character_set_connection, character_set_results are utf8mb4 by default. Replace DBNAME with the database name: You can now retry to to write utf8 character into your database. attempting to manually update the record: In short I had to reduce the size of that field in order to get the update to work. It's because the two tables are created in different versions of MySQL. It is sufficient to change the column encoding to utf8mb4. I am trying to insert blob data into table with column type LONGBLOB from memory stream in c++ code. Connecting three parallel LED strips to the same power supply. Incorrect string value I am trying to store fields from an RSS feed. Here is some of the code I'm using: String sql = "INSERT INTO table VALUES (? Connecting three parallel LED strips to the same power supply. so, I look up the column charset in every table. I think this one is the correct answer of all. Incorrect string value: '\xF0\x90\x8D\x83\xF0\x90' for column 'content' at row 1. Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? Why is this usage of "I've to work" so awkward? but when i do from my localhost server (version 5.7) it was fine after that i created the table from local server and copied to the online server using mysql yog i think the problem is with character set. Replace database_name with your database name. Downloaded mariadb. in my website, then i check Mysql's character set which is latin now ,so i change it into utf-8,then i restart my project ,then i got the same error with you , then i found that i forget to change the database's charset and change into utf-8, boom,it worked. Replace database_name with your database name. Here you have a character that needs 4 bytes: \xF0\x90\x8D\x83 (U+10343 GOTHIC LETTER SAUIL). Ready to optimize your JavaScript with Rust? "Incorrect string value" when trying to insert UTF-8 into MySQL via JDBC? Not the -Dfile.encoding=UTF-8 is not enabled and it appears to work as expected. In my settings.py (Django Project), I changed to sql-mode="NO_ENGINE_SUBSTITUTION". Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? When you try to insert a new record into your MySQL database table, you may encounter an error saying Incorrect string value along with some UTF-8 hex code for the description.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'sebhastian_com-medrectangle-3','ezslot_8',170,'0','0'])};__ez_fad_position('div-gpt-ad-sebhastian_com-medrectangle-3-0'); For example, suppose you create a Test table with only one column as follows: Next, lets insert the following Egyptian hieroglyph character into the table: Your MySQL server may respond with the following error: The error above is because the character requires 4-bytes to be represented in UTF-8 encoding. I'm sending out an occasional email with the latest programming tutorials. Debian/Ubuntu - Is there a man page listing all the version codenames/numbers? To learn more, see our tips on writing great answers. If you are facing a similar issue in java and don't have the flexibility to change the charset and collate encoding of the database then this answer is for you. Unfortunately some of the existing data was invalid UTF-8 and the ALTER query returned Incorrect string value for various rows. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. )" This didn't raise any flags with unit testing (using H2) or CI/integration testing (using MariaDB4j), it blew up in our production-like setup. I had a table with a varbinary column that I wanted to convert to utf8mb4 varchar. Problem When attempting to restore an XML backup in Confluence, the process stops and an error is thrown. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. There are also many other arguments on the web discussing these two. incorrect string value mysql.connector python despite utf8mb4; mysql data truncation incorrect string value; my incorrect string value error; incorrect value error; Incorrect string value: '\xE2\x82\xA6' for column 'symbol' at row 1; Incorrect string value: '\xE0\xA4\x86\xE0\xA4\xAA.' for column ' Incorrect string value: '\x92s http://php.net/manual/en/mysqli.set-charset.php. The time the question was asked, "UTF8" in MySQL meant utf8mb3. What are the likely effects of such a fix? E.g., Normalizer::normalize('o', Normalizer::FORM_C). I copy pasted the entire text in a text editor like vi and replaced the troubling character with a text one. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Has anyone else run into this, any ideas what's going on? How to fix all pre-existing data? The CHARACTER SET is utf8mb4 and COLLATION utf8mb4_unicode_ci. But there is small problem.. see above answer about other solution is failed because the word is not inserted because contain more than 2 bytes (cmiiw).. this solution make your insert data become box. Incorrect string value: '\xE2\x80\x8BWe .' for column" as we try to insert a row in the db. To use the 4-bytes UTF-8 encoding, it needs to be specified as utf8mb4. the the incorrect string value always starts with \xF0). this is not the recommendation solution.. Log in to your server using SSH, or open a command prompt over Remote Desktop if you are using a Windows server. It seems that Connector/J defaults to 3-byte Unicode otherwise: For example, to use 4-byte UTF-8 character sets with Connector/J, configure the MySQL server with character_set_server=utf8mb4, and leave characterEncoding out of the Connector/J connection string. In PHP for instance, you would need to switch from substr to mb_substr. It just helped me a lot I had changed the table collation ant I thinked that should be it but the fields were still ascii collation What exactly do you mean by, "Of course it's not going to understand genuine UTF-8 any more?". Wolf Knight But to be sure run the conversion script. 1 helped me when I was trying to insert Cyrillic text through my contact form. The query is inserting the following string " We are seeking a" - nothing innocuous in the text and certainly no instance of this string '\xE2\x80\x8B' (despite what the error message says). You can read more details: https://dev.mysql.com/doc/refman/8.0/en/charset-column.html, You need to set utf8mb4 in meta html and also in your server alter tabel and set collation to utf8mb4. Change database character set. How to fix "Incorrect string value" errors? The solution was to build a custom type mapper: As far as Hibernate is involved, it seems it has a bunch of provided type mappers, including for java.net.URL, but not for java.net.URI (which is what we needed here). you're trying to enter ISO-8859-1 encoded string into UTF-8 encoded column), or the column does not support the data you're trying to enter. 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: Use utf8mb4! If you see the "cross", you're on the right track. I'm just adding mine since I ran into the same error but it turned out to be a completely different problem. Log into MySQL and run the following command to change character set of database to UTF8. Use proper SET NAMES on the client side. After noticing an application tended to discard random emails due to incorrect string value errors, I went though and switched many text columns to use the utf8 column charset and the default column collate (utf8_general_ci) so that it would accept them. Tried the approach by @lingar Just to make the reader aware, this screws up performance of the table very very very badly. (yes, I know the emails are full of random garbage, but I thought utf8 would be pretty permissive). That means, you'd need to specifically put "utf8mb4", if you mean it (and you should use utf8mb4), I'll keep this here instead of just editing the answer, to make clear there is still a difference when saying "UTF8". That is all that had to be done and all seems to work for me. This solution help me when i try to upload 200000 row of csv file into my database. First, verify, that the data source (a file, ) really is UTF-8. To quickly fix this, I had to spot the character causing this error. String functions that cannot do that and are, say, attempting to truncate might split one of the single multibyte characters in the middle, and that can cause such string error situations. because if you use latin1 (my case).. the data insert successly but not the content (mysql not respond with error!!) you are using spring boot. I originally posted this on the request-tracker forums and I was told this is a character set issue and/or database issue not a request-tracker. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'sebhastian_com-leader-1','ezslot_4',137,'0','0'])};__ez_fad_position('div-gpt-ad-sebhastian_com-leader-1-0');The MySQL utf8 or utf8mb3 cant store string values that contain a UTF-8 4-bytes character. But I cant change the table structure, only the DBMS config (mysql). and what if all have different storage engine (innodb, etc)? To conclude, the ERROR 1366: Incorrect string value happens when MySQL can't insert the value you specified into the table because of incompatible encoding. Also see charset-connection. this library only aliases the emoji's rather than the whole string. An exception occurred in the database while saving changes for context type 'PurchaseReceiving.Infrastructure.Nxin_Qlw_BusinessContext' Microsoft.EntityFrameworkCore.DbUpdateException: An e. This is how my connection is set: By the way MariaDB in same case (I have tested the same INSERT there) just cut a text without error. None worked. Of course it's not going to understand genuine UTF-8 any more, nor any other non-cp1252 encoding, but it sounds like you're not too concerned about that? But I do not know how to troubleshoot the problem. Why is the federal judiciary of the United States divided into circuits? and after fetching from db use Base64.decode64(subject), Step 1: but nothing in SQL detected the erroneous values, other than the ALTER query returning bad rows one by one. I could still not write international text into db getting same failure as above, Now using this how-to-convert-an-entire-mysql-database-characterset-and-collation-to-utf-8, Run this query that gives you what needs to be rung. That error means that either you have the string with incorrect encoding (e.g. mysql> ALTER DATABASE database_name CHARACTER SET utf8 COLLATE utf8_general_ci; Now if you to insert data into MySQL database, it should not give errors. I certainly am in production so it turns out you do need to check over what has been done by above, since it sometimes does not work, here is reason and fix in this scenario: You can see some are still latin Posted on Dec 15, 2021if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'sebhastian_com-box-3','ezslot_9',169,'0','0'])};__ez_fad_position('div-gpt-ad-sebhastian_com-box-3-0'); Learn how to fix MySQL 'Incorrect string value' ERROR 1366 when inserting new data. Sadly this solution is not pretty. I tried few other encodings without success. MySQL too I tired so many things, realized mysql doesn't support 4 byte utf-8 uncoding at this version and was dying trying to understand what's causing this. your inbox! http://php.net/manual/en/mysqli.set-charset.php. It worked! How to fix "Incorrect string value" errors? To learn more, see our tips on writing great answers. to see which procedures have not been updated to the servers new character_set_client, collation_connection and Database Collation values. These SQL commands do NOT WORK PERMANENTLY - only in a session: my solution is change the column type from varchar(255) to blob. Question: the last ALTER TABLE command will convert the contents of all VARCHAR fields into valid, genuine UTF8 encoded string? (Though, once the problem was understood, it was easy enough to see the wrong value in the MariaDB4j instance; it just didn't blow up the test.) Point 3 was the clincher for me in conjunction with changing the db, table & field encodings: 'SET NAMES utf8mb4;INSERT INTO Mytable '; Point 3 did the trick for me too, my table encoding already set to utf8mb4. Previously I was trying to import an excel created csv. I did a lot search and tries a few ways, include move from utf8 to utf8mb4. The second approach should be used selectively, i. e. never be applied to. I changed it to MySqlDbType.Text and now I can write all the UTF8 symbols I want! It works like a charm, 29000 records in there no errors. Otherwise you can't have tears of joy . In this article, we will look at how to fix incorrect string value in MySQL. solution 2, just par. 'Incorrect string value' error thrown when restoring XML backup in Confluence Platform Notice: Server and Data Center Only. While this answers helps to investigate the problem, it doesn't answer what to do to fix it. Cmd: C:\wamp64\bin\mysql\mysql5.7.14\bin\mysql.exe -h localhost -u root -P 3306 --default-character-set=utf8 omega_empresa_parametros_336 < C:\wamp64\www\PontoEletronico\PE10002Corporacao\BancoDeDadosModelo\omega_empresa_parametros.sql. Tested using Python: If you're looking for a way to avoid decoding errors within the database, the cp1252 encoding (aka "Windows-1252" aka "Windows Western European") is the most permissive encoding there is - every byte value is a valid code point. I fixed it by re creating my database with utf8mb4 collation, and applied play evolution to re create all tables so that all tables should be recreated with utf-8 collation. Another testing related to this were.. using utf8_encode on your code before save. I got a similar error (Incorrect string value: '\xD0\xBE\xDO\xB2. To fix this error I upgraded my MySQL database to utf8mb4 which supports the full Unicode character set by following this detailed tutorial. Changing the type apparently was the answer, an immediate solution. It can be tedious to run separate commands to change character set of each table. You may also have to set the server property character_set_server to utf8mb4 in the MySQL configuration file. Try Ubiq for free. Replace user_name, pass_word and database_name with your username, password and database names respectively. We have 3D models, systems, scripts and much more! This fixed most of the errors, and made the application stop getting sql errors when it hit non-latin emails, too. In practice, the latter problem is caused by MySQL UTF-8 implementation that only supports UNICODE characters that need 1-3 bytes when represented in UTF-8. The trick is to use column type utf8mb4 instead of type utf8 which doesn't actually support all of UTF-8 despite the name. But still not able to solve it. You can If the result is not utf8 you must convert your database. The strings that contain \xF0 are simply characters encoded as multiple bytes using UTF-8. When you encounter this error, pay attention to the characters that you want to insert into the database. If you are creating a new MySQL table, you can specify the charset of all columns upon creation, and that fixed the issue for me. How do you set a default value for a MySQL Datetime column? There are no flags that I can toggle in this column. To avoid this, always use the same encoding (e.g. This solution seem the easiest way to go. Why does the USA not have a constitutional court? Connect and share knowledge within a single location that is structured and easy to search. Asking for help, clarification, or responding to other answers. Not valid, you are supposing he uses phpMyAdmin. Try invoking Java with the, You will have to alter the table as well with CHARACTER SET utf8 COLLATE utf8_general_ci then after change the column CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci. For them you need to do : ALTER TABLE table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci; Source -. Sometimes you may get Incorrect String Value error while trying to insert data in MySQL table, or import external data into MySQL database. The main Even though I had database and all tables set to UTF-8, I had yet to set my.cnf: And this must list all triggers with utf8-*: And some of variables listed by this should also have utf-8-* (no latin-1 or other encoding): Although your collation is set to utf8_general_ci, I suspect that the character encoding of the database, table or even column may be different. Improve this question. , "", , utf8utf8bm4, utf-8 1~4 Windows gbk utf-8, MySQL utf-8 utf-8MySQLutf-8utf-8 Incorrect string value"", utf-8MySQL5.3.3 utf8mb4emoji utf8mb4 , MySQL UTF8 mysql4utf8 mysqlutf-8 MySQL GBKGB2312UTF8 MYSQL How to support full Unicode in MySQL databases, -- charset=utf8 cahrset=utf8mb4, How to support full Unicode in MySQL databases, win7 64win Also read : How to Change Column Size in MySQL, Run the following command to change the character set of all tables in your database to UTF8. I suggest going through it carefully, because there are quite a few gotchas (e.g. Not the answer you're looking for? I use on latin1 and it was success (I'm not using sql-mode)! It worked. what if I have a bunch of tables I want to change in database though? ERROR 1366 (22007): Incorrect string value: '\xCD\xF8\xC2\xE7\xBF\xC9.' for column `rt34`.`Attachments`.`Headers` at row 1229. benefit is the readability of the text even after the encoding because I had this problem with my PLAY Java application. I think this is likely the best fix. Is there any reason on passenger airliners not to have a physical lock between throttles? Same goes for MariaDB. If you have MySQL 5.5 or later you can change the column encoding from utf8 to utf8mb4. Incorrect string value - Problem Metin2Dev or M2Dev is a forum where you can find resources to create your best metin2 private server. check if value is null mysql; mysql select default if null; mysql set value as null; how to store base64 string in mysql; if column value is null then in mysql; replace null value within column mysql; Mysql2::Error: Incorrect string value: '\\xE2\\x80\\x8B; mysql where don't have string; provide hardcoded value in the mysql query; set column to . I think this answer should be the correct one. For Python, set the charset of the connection in the MySQL Connector connect method: 1 - You have to declare in your connection the propertie of enconding UTF8. Incorrect string value: '\x error running on MySQL. The "str.replace()" function is also used to fix the "ValueError: could not convert string to float" by replacing any symbols or characters with an empty string.In the below snippet, the "str.repalce()" function is used to replace the unwanted symbols and strings: Is there any reason on passenger airliners not to have a physical lock between throttles? The column's collation is utf8_general_ci. Note that utf8 in MySQL always refers to utf8mb3. Are the S&P 500 and Dow Jones Industrial Average securities? My problem was that the collate selected was utf8_unicode_ci instead of utf8_general_ci. Copy paste output in editor replace all | with nothing post back into mysql when connected to correct db. However, when I autogenerated the field mappings using MyGeneration software, it automatically set the field type as MySqlDbType.Blob in C#. It turns out the column charset is latin. Obtain closed paths using Tikz random decoration on circles. same as above answer using base64_encode . So badly that I had to revert the table back to utf8. insert into tableA values(binary stringcolname1); Hi i also got this error when i use my online databases from godaddy server What an odd choice to have utf8 really mean "the subset of UTF8 that can be represented in 3 bytes". It was misconfiguration from my database table too. Here is my connection string: jdbc:mysql://localhost:3306/myschema I'm using mysql-connector-java-5.1.32-bin.jar What am I doing wrong? one of it got the error, the other one is fine. The column's collation is utf8_general_ci. Incorrect string value: '\xC5\xABt\xC4\x97' Ask Question Asked 7 years, 11 months ago Modified 6 years, 3 months ago Viewed 2k times 1 I am facing database error Incorrect string value: '\xC5\xABt\xC4\x97'. To store the values, you need to use the utf8mb4 character set.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'sebhastian_com-large-mobile-banner-1','ezslot_5',172,'0','0'])};__ez_fad_position('div-gpt-ad-sebhastian_com-large-mobile-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'sebhastian_com-large-mobile-banner-1','ezslot_6',172,'0','1'])};__ez_fad_position('div-gpt-ad-sebhastian_com-large-mobile-banner-1-0_1');.large-mobile-banner-1-multi-172{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:15px!important;margin-left:0!important;margin-right:0!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}. For some people here, it worked. @nicogawenda: What are all the SQL queries to be run in order to completely fix the problem? You can see the encoding used for your table by using the SHOW CREATE TABLE statement as follows: if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'sebhastian_com-large-leaderboard-2','ezslot_2',133,'0','0'])};__ez_fad_position('div-gpt-ad-sebhastian_com-large-leaderboard-2-0');Heres the result from my computer: As you can see, the table uses the DEFAULT CHARSET=utf8mb3 and the names column uses CHARACTER SET utf8. In the meantime, utf8mb4 was added, but to my knowledge MySQLs "UTF8" was not switched to mean utf8mb4. Probably I will not be able to filter or search with that column, but I'm no need for that. Upgrade to 5.5 and replace utf8 with utf8mb4 in the above answers. The database is returning "Incorrect string value" when inserting a row with a Unicode Smiling Face with Smiling Eyes (Unicode U+1F60A stored as 4 byte UTF-8). Why won't my MySQL insert work on PHP when it contains a character? Solution 2: Using str.replace() Function. this answer is great at explaining the problem but very poor at detailing the solution (which is what OP asked for). I got this error when I had TRIGGERs, which inherit server's collation for some reason. The only disadvantage of doing this is that you have to take care of the encoding yourself. This question-and-answer helped me understand the difference between o and . Find centralized, trusted content and collaborate around the technologies you use most. If you see utf8 or utf8mb3, then you might be using MySQL version below 8 (MySQL version 5 may default to utf8mb3). How to use a VPN to access a Russian website that is banned in the EU? Python 3.5.2 PyMySQL Version used: 0.8.9 my.cnf: MySQL's config is same => Incorrect string value #536 (comment) Use the repository => https://github.com/seanmars/test The Database are clean and just create a empty database named "test". The above command lists all the tables in a database and converts their character set to UTF8 one by one, automatically. I turned back character set of column to utf8 and changed type of the column to MEDIUMTEXT. In my case, Incorrect string value: '\xCC\x88', the problem was that an o-umlaut was in its decomposed state. rev2022.12.9.43105. c# Having trouble with mysql : Incorrect string value code 1366 for column at row 1, central limit theorem replacing radical n with n, MOSFET is getting very hot at high frequency PWM. When you have a command line available, change your current working directory to your XenForo directory. Replace DBNAME with the database name: To change the character set encoding to UTF-8 for the database itself, type the following command at the mysql> prompt. I tried almost every steps mentioned here. I'm inserting thousands of records, and I always get this error when the text contains \xF0 (i.e. The solution for me when running into this Incorrect string value: '\xF8' for column error using scriptcase was to be sure that my database is set up for utf8 general ci and so are my field collations. For example, the GOTHIC LETTER SAUIL looks like a normal capital S but actually a 4-bytes character: Alternatively, you can also pass the hex code (\xF0\x90\x8D\x83 in the example above) into Google to look for the exact character that causes the error. I am pretty sure, my database looks like below. The table and fields have the wrong encoding; however, you can convert them to UTF-8. Connector/J defaults to 3-byte Unicode otherwise, how-to-convert-an-entire-mysql-database-characterset-and-collation-to-utf-8, https://dev.mysql.com/doc/refman/8.0/en/charset-column.html. String/Unicode to Alias (Before Save/Update to DB), Alias to Unicode/String (After Save/Update/Load from DB). So you are suggesting that UTF-8 with 3 (three) bytes is unable to store LATIN SMALL LETTER N WITH TILDE (), and we need 4 (four) bytes to spell "Espaa" correctly? Log into MySQL and run the following command to check the default character set name of your database. And mysql's default is (at least on Ubuntu) latin-1 with swedish collation. Log out of MySQL and run the following command to take backup of your MySQL database. Connector/J will then autodetect the UTF-8 setting. 3. I don't see exactly where the lack of understanding of UTF-8 is having an impact. With this set -Dfile.encoding=UTF-8 appeared to make no difference. It turned out that mysql shows me wrong error. I have two tables have a utf8 varchar format each. Feel free to use the provided ALTER statements above if you need it . In my case it was the Rupee currency symbol. Ubiq makes it easy to visualize data, and monitor them in real-time dashboards. Is this an at-all realistic configuration for a DHC-2 Beaver? But worth to share. In PHP, the fix for me was to use PHP's Normalizer library. I got same problem as explained as "Incorrect string value: '\xEF\xBF\xBD ex.' for column 'Description' at row 2" and My description column is ="Centrally located, the Stratosphere Casino Hotel and Tower is at the top of the Las Vegas Strip and the closest Strip property to Downtown Las Vegas and the Fremont Street Experience. Or in my case just type/add, why not recommended solution. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The solution for mysql server. for details. Thanks for contributing an answer to Stack Overflow! Heres the query to alter your database, table, or column to utf8mb4 character set: When you change the character set on the database level, then any new table you create for that database in the future will use that character set as the default encoding. Connect and share knowledge within a single location that is structured and easy to search. How do we suppress the errors? Please unmark this answer as the solution, hiding an error is not the solution of anything. Is Energy "equal" to the curvature of Space-Time? Follow asked Jul 30, 2018 at 20:13. user2804064 user2804064. this one helps, it tells you what to try, instead of what may be wrong. @Brian: If you tell it you're giving it cp1252, and you actually give it the UTF-8 for, say. How do I import an SQL file using the command line in MySQL? : you can use the Emoji Java library (or something similar if you are not using java) to achieve the same. I also had to drop and re-create all the databases stored procedures (and functions too) in order that they execute within the new character set of utf8mb4. rev2022.12.9.43105. Keeping in mind that I don't want to touch or even look at the application source code unless absolutely necessary: One thing I considered was switching to a utf8 varchar([some large number]) with the binary flag turned on, but I'm rather unfamiliar with MySQL, and have no idea if such a fix makes sense. I you only want to apply the change only for one field, you could try serializing the field. Returning to the Test table, you can alter just the names column to make the INSERT statement works:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'sebhastian_com-large-mobile-banner-2','ezslot_10',143,'0','0'])};__ez_fad_position('div-gpt-ad-sebhastian_com-large-mobile-banner-2-0'); Now you should be able to insert the character into the table: By default, MySQL version 8 should use utf8mb4 encoding and collation for your databases. You need to modify or remove characters that have 4-bytes UTF-8 encoding, or you can change the encoding and collation used by MySQL. How do I tell if this single climbing rope is still safe for use? Note: You can use @PrePersist, @PreUpdate, @PostPersist, @PostUpdate, write your sql statement like this (need to add allowMultiQueries=true to jdbc connector): this will make sure each connection to the server, character_set_client,character_set_connection,character_set_results are utf8mb4. Try: Substitute whatever your actual data type is for VARCHAR(255). on mysql config search for, uncomment it. I solved this problem today by altering the column to 'LONGBLOB' type which stores raw bytes instead of UTF-8 characters. See "Incorrect string value" when trying to insert UTF-8 into MySQL via JDBC? Now if you to insert data into MySQL database, it should not give errors. Incorrect string value "" What could be the problem? In my case, I tried everything above, nothing worked. If you encounter this error either the data you are sending is not UTF-8 encoded, or your connection is not UTF-8. change the table and column encoding to utf8mb4, STOP specifying characterEncoding=UTF-8 and characterSetResults=UTF-8 in the jdbc connector,cause this will override character_set_client, character_set_connection, character_set_results to utf8. 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