Let’s learn everything you need to know about removing leading and trailing unwanted characters from a string with the SQL TRIM function.
Ultimately, whether characters are rendered invisible or not also depends on the font used for display. To remove all of these as well, replace '\s' with '[\s\u180e\u200B\u200C\u200D\u2060\uFEFF]' or '[\s]' (note trailing invisible characters!). Example, instead...
TRIM( [LEADING|TRAILING|BOTH] [charactersFROM] string ) 注意 若要檢視 SQL Server 2014 (12.x) 和更早版本的 Transact-SQL 語法,請參閱舊版文件。 引數 [ LEADING | TRAILING | BOTH ] 適用於:SQL Server 2022 (16.x) 和更新版本、Azure SQL 受控執行個體 和Microsoft Fabric: ...
陣列下標、ARRAY_TRIM、TRIM_ARRAY、UNNEST、CARDINALITY及MAX_CARDINALITY只能指定給SQL陣列參數或變數。 回復文字: 將運算元變更為SQL陣列變數或參數。 請重試該要求。 SQLCODE 或 SQLCODE: -20437 SQLSTATE 或 SQLSTATE: 428H0SQ20438 訊息文字: 陣列下標值不是正確資料類型。 原因文字: 指定給陣列下標的值必須是...
SQL_SCHEMA_USAGE SQL_SPECIAL_CHARACTERS SQL_SQL_CONFORMANCE SQL_SUBQUERIES SQL_UNIONSQL 限制InfoType 参数的以下值返回有关应用于 SQL 语句中标识符和子句的限制的信息,例如标识符的最大长度和选择列表中的最大列数。 驱动程序或数据源可以施加限制。SQL...
SQL_SCHEMA_USAGE SQL_SPECIAL_CHARACTERS SQL_SQL_CONFORMANCE SQL_SUBQUERIES SQL_UNIONSQL 限制InfoType 参数的以下值返回有关应用于 SQL 语句中标识符和子句的限制的信息,例如标识符的最大长度和选择列表中的最大列数。 驱动程序或数据源可以施加限制。SQL...
trim([leading | trailing | both] [characters] from string) text 从字串 string 的 开头/结尾/两边/ 删除只包含 characters (缺省是一个空白)的最长的字串. trim(both 'x' from 'xTomxx') Tom upper(string) text 把字串转化为大写. upper('tom') TOM ...
SQL_SCHEMA_USAGE SQL_SPECIAL_CHARACTERS SQL_SQL_CONFORMANCE SQL_SUBQUERIES SQL_UNIONSQL 限制InfoType 引數的 下列值會傳回 SQL 語句中套用至識別碼和子句的限制相關資訊,例如識別碼的最大長度和選取清單中的資料行數目上限。 驅動程式或資料來源可以施加限制。SQL...
Only using advanced text editors such as Notepad++ are we then able to visualize the special characters in the data, as shown in Figure 4. Figure 4 When it comes to SQL Server, the cleaning and removal of ASCII Control Characters are a bit tricky. For instance, say we have successfully...
SQL_SPECIAL_CHARACTERS 2.0 A character string that contains all special characters (that is, all characters except a through z, A through Z, 0 through 9, and underscore) that can be used in an identifier name, such as a table name, column name, or index name, on the data source. For...