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https://dba.stackexchange.com/questions/196570/why-does-the-varchar-datatype-allow-unicode-values
But the definition of varchar says, it allows non-unicode string data. But the Trademark(™) and Registered(®) symbols are Unicode characters. Does the definition contradicts the property of varchar datatype? While the other answers are not incorrect, I think it would help to point out a confusion in base terminology.
https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.admin.nls.doc/doc/c0004821.html
Db2 supports UTF-8 and UCS-2 encoding. When a Unicode database is created, CHAR, VARCHAR, LONG VARCHAR, and CLOB data are stored in UTF-8 form, and GRAPHIC, VARGRAPHIC, LONG VARGRAPHIC, and DBCLOB data are stored in UCS-2 big-endian form.
https://www.sqlservercentral.com/forums/topic/can-varchar-columns-use-utf-8
Sep 18, 2006 · SQL server definitely support various unicode encoding including utf-8, but you need to use nvarchar instead of varchar. nvarchar is unicode …
https://www.mssqltips.com/sqlservertip/4322/sql-server-differences-of-char-nchar-varchar-and-nvarchar-data-types/
SQL Server has supported Unicode since SQL Server 7.0 by providing nchar/nvarchar/ntext data types. SQL Server doesn't support UTF-8 encoding for Unicode data, but it does support UTF-16 encoding. I made a table below that will serve as a quick reference.
https://stackoverflow.com/questions/612430/when-must-we-use-nvarchar-nchar-instead-of-varchar-char-in-sql-server
Stack Overflow Public questions and answers; ... Non-unicode - (char, varchar, and text). From MSDN. Collations in SQL Server provide sorting rules, case, and accent sensitivity properties for your data. Collations that are used with character data types such as char and varchar dictate the code page and corresponding characters that can be ...
https://stackoverflow.com/questions/7038213/which-special-characters-are-allowed-in-sql-server-varchar-fields
Where can I see all the "special" characters permissible in a varchar or char field in SQL Server? Stack Overflow. Products ... Which “special” characters are allowed in SQL Server varchar fields? [closed] ... If you use nchar/nvarchar then it's pretty much any character in any unicode set in the world. share improve this answer. answered ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode.html
This section describes support for Unicode in MySQL. For information about the Unicode Standard itself, visit the Unicode Consortium website. BMP characters have these characteristics: Their code point values are between 0 and 65535 (or U+0000 and U+FFFF). They can be encoded in a variable-length encoding using 8, 16, or 24 bits (1 to 3 bytes). ...
https://docs.microsoft.com/en-us/sql/t-sql/data-types/char-and-varchar-transact-sql
Starting with SQL Server 2019 (15.x), consider using a UTF-8 enabled collation to support Unicode and minimize character conversion issues. If using a lower version of the SQL Server Database Engine, consider using the Unicode nchar or nvarchar data types to minimize character conversion issues. If you use char or varchar, we recommend to:
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