在动态SQL中,Oracle的LENGTH函数可以用于获取字符串的长度。以下是一个示例动态SQL语句,使用LENGTH函数来获取一个字符串的长度: DECLARE v_string VARCHAR2(50) := 'Hello World'; v_length NUMBER; BEGIN EXECUTE IMMEDIATE 'SELECT LENGTH(:1) FROM DUAL' INTO v_length USING v_string; DBMS_OUTPUT.PUT_LIN...
Oracle/PLSQL:LENGTH Function This Oracle tutorial explains how to use the Oracle/PLSQLLENGTH functionwith syntax and examples. Description The Oracle/PLSQL LENGTH function returns the length of the specified string. Syntax The syntax for the LENGTH function in Oracle/PLSQL is: LENGTH( string1 )...
Oracle / PLSQL函数 - LENGTH和LENGTHB 1、LENGTH( string1 )2、LENGTHB( string1 ) 在oracle中,这两个函数都有差不多意思,最大的区别在于:length 求得是字符长度,lengthb求得是字节长度。 在了解这些之后,看些例子就明白了 --查询姓名 select colName1 as 编号, colName2 as 姓名 from tableName; --...
The length function returns the length of a character string. The length function calculates the length using the UTF character set. returnvalue length(source) source ::= any* returnvalue ::= integer Example: Find the length of the full name of the passenger whose ticket number is 1762350390409...
Oracle Length 和 Lengthb 函数说明 一.官网的说明 http://download.oracle.com/docs/cd/E11882_01/server.112/e26088/functions088.htm#SQLRF00658 Purpose The LENGTH functionsreturn the length of char. LENGTH calculates length usingcharacters as defined by the input character set....
LENGTH()、LEN() 函數 (SQL LENGTH()、LEN() Function) LENGTH()、LEN() 函數是用來取得字串長度。 LENGTH()、LEN() 語法 (Syntax) SELECT LENGTH(column_name) FROM table_name; MySQL 函數名稱是用 LENGTH();Oracle一樣用 LENGTH();SQL Server 則是用 LEN()。 LENGTH()、LEN() 函數查詢用法 (Exa...
Oracle数据库的LENGTHB()函数则按字节计算,英文占1字节,UTF-8编码的中文字符占3字节。PostgreSQL提供CHAR_LENGTH()作为别名,与LENGTH()功能相同。 处理特殊字符时需特别注意,换行符、制表符等转义字符均会被计入长度。包含前导或尾部空格的情况,例如’test’,空格字符将完整计入总长度。当字段值为NULL时,MySQL返回...
The length function returns the length of a character string. The length function calculates the length using the UTF character set. returnvalue length(source) source ::= any* returnvalue ::= integer Example: Find the length of the full name of the passenger whose ticket number is 1762350390409...
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Name LENGTH, LENGTHB, LENGTHC, LENGTH2, and LENGTH4 Synopsis The LENGTH family of functions returns the length of a string. The length can be returned in any of the following units: … - Selection from Oracle PL/SQL Programming, Third Edition [Book]