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25 wrz 2009 · Consider using SELECT name, CONVERT(BINARY CONVERT(name USING latin1) USING utf8) AS conv FROM table WHERE id IN (SELECT id FROM table WHERE LENGTH(name) != CHAR_LENGTH(name)); to find broken records and see the result before using UPDATE.
25 sty 2024 · Step 1: Check the current character set of the table with the following SQL command: SHOW CREATE TABLE my_table; Step 2: If the table is not using utf8mb4, alter it using an SQL ALTER TABLE statement: ALTER TABLE my_table CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
13 cze 2017 · This is easily revealed by the following query: mysql> select i,v,hex (v) from foo; +------+------+--------+ | i | v | hex (v) | +------+------+--------+ | 1 | é | C3A9 | +------+------+--------+ 1 row in set (0.00 sec) 0xC3A9 is not the latin1 encoding of ‘é’, it is the UTF-8 encoding of ‘é’. The correct value is 0xE9.
28 lis 2007 · When I try to read the data via select statement of mysql client program I get broken characters for all new data (data that was inserted after I switched to UTF-8). Even when I use "charset utf8" command before my select statement.
Process the string with a function that escapes the special characters. In a C program, you can use the mysql_real_escape_string_quote() C API function to escape characters. See mysql_real_escape_string_quote().
26 sty 2024 · Basic Escaping Using Backslashes. The simplest method to escape special characters in MySQL is by using a backslash (\). When you add a backslash before a special character, MySQL interprets the next character literally.
22 maj 2012 · The 'bad characters' are most likely UTF-8 control characters (eg \x80). You might be able to identify them using a query like SELECT bar FROM foo WHERE bar LIKE LOCATE(UNHEX(80), bar)!=0
