数据库(Database)的Charset和Collation 创建数据库的时候,如果没有指定character set和collation,会自动用MySQL Server的character set和collation。 查看数据的Character Set和Collation USE db_name;SELECT@@character_set_database, @@collation_database; 不想改变当前数据库的话,可以使用语句: SELECTDEFAULT_CHARACTER_...
SuffixMeaning _aiAccent-insensitive _asAccent-sensitive _ciCase-insensitive _csCase-sensitive _binBinary For nonbinary collation names that do not specify accent sensitivity, it is determined by case sensitivity. If a collation name does not contain_aior_as,_ciin the name implies_aiand_csin the...
Argument data type datetime is invalid for argument 3 of json_modify function Argument data type sql_variant is invalid for argument 1 of like function Argument data type text is invalid for argument 29 of checksum function Argument data type varchar is invalid for argument 1 of formatmessage fun...
Choosing the correct charset and collation settings in a MySQL database can significantly impact query execution time and overall database performance. When not appropriately configured, they can become bottlenecks in query execution. For example, if your database uses a character set that doesn’t ...
We have set the database collation to Japanese_90_CI_AS. Do we have any significant benefit having the collation in 90_ci_as and not on Japanese_CI_as OR Japanese_Unicode_Ci_as? Our server collation is still Latin, because of which temp tables in our database are created in latin ...
SuffixMeaning _aiAccent-insensitive _asAccent-sensitive _ciCase-insensitive _csCase-sensitive _ksKana-sensitive _binBinary For nonbinary collation names that do not specify accent sensitivity, it is determined by case sensitivity. If a collation name does not contain_aior_as,_ciin the name implie...
The type of column "CompatibilityLevel" conflicts with the type of other columns specified in the UNPIVOT list. The T-SQL: DECLARE@dbnameSYSNAME;SET@dbname=DB_NAME();SELECT[Database]=unpvt.DatabaseName , [Configuration Item]=unpvt.OptionName ...
The example defines the mapping for "A" U+0041. The weights are given in square brackets, separated with periods. The primary weight is 0F6C, etc. The text starting with#is a comment, as in the Unicode database in general. The first character inside brackets has a special meaning. If...
We are going to break down the different parts of theCOLLATEclause and give meaning to each part so you can better understand, and optionally tweak the clause to better suit your needs. Breaking Down and Understanding the SQL Server Collation Setting ...
icu, meaning theICU project, assuming PostgreSQL was built with ICU support For now, onlylibccollations can be used as the database default, though ICU collations can be used explicitly, for example when defining the columns of a table. So which should you use?