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_
--Count the length of stringselectlengthb('select * from scott.emp')ascountted_by_byte, length('select * from scott.emp')ascountted_by_charfromdual;--For some character encoding, the length() and the lengthb() is same in english--you may use this feature to check whether the string ...
```sql SELECT LENGTH('你好, 世界!', 'AL32UTF8') AS length_of_string FROM dual; ``` 这将返回 `6`,因为 `'你好, 世界!'` 包含 6 个字符(假设字符集 `AL32UTF8` 被正确识别和使用)。 ### 注意事项 - 如果字符集参数不被支持或指定错误,Oracle 可能会返回一个错误或警告。 - 在处理多...
In Oracle, LENGTH function returns the length of a string in characters as defined by the input character set. In SQL Server, you can use LEN function, but note that it excludes trailing blanks. When applied to a CHAR or NCHAR column, Oracle LENGTH ret
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 ) Parameters or Arguments string1 The string to return the length for.Returns The LENGTH function returns a numeric value. If string1 is ...
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LENGTH(string_expression);Code language:SQL (Structured Query Language)(sql) Arguments# The OracleLENGTH()function accepts one argument: string_expression is the string or an expression that returns a string to be evaluated. Thestring_expressioncan be a constant, a variable, or a column of a ...
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]
The function is called LENGTH in Oracle, MySQL, and Postgres, and it's called LEN in SQL Server. Oracle has several variants of the LENGTH function, which are the same as the basic LENGTH function – to find the length of a specified string. ...
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;...