SELECT 'It\'s a string with a single quote' FROM table; 如果要在字符串中包含反斜杠,同样需要进行转义处理: 代码语言:txt 复制 SELECT 'C:\\path\\to\\file' FROM table; 在SQL中,转义字符的具体表示方式可能因数据库系统而异。下面是一些常见数据库系统中的转义字符表示方式: MySQL:使用反斜杠进行转义...
首先,我们需要创建一个表并插入一些字符串数据。 -- 创建一个表来存储字符串数据CREATETABLEspecial_characters(idINT,str_value STRING);-- 向表中插入一些测试数据INSERTINTOspecial_charactersVALUES(1,'@#$%&*'),(2,'Hello!'),(3,'^^^&&&**'),(4,'12345'),(5,'!@#^&*(?)'); 1. 2. 3....
STRING_ESCAPE(expression,rules) Parameters expression- this is a string of character with special characters to escape. rules– the rules applied to the expression, currently the only value supported is 'json'. The following characters can be escaped: Simple STRING_ESCAPE Example The following examp...
maxdb::real_escape_string— Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection 说明 过程化风格 string maxdb_real_escape_string ( resource $link , string $escapestr ) 面向对象风格 string maxdb::real_escape_string ( ...
Special characters in a SQL Datasource update query. Special characters in column name bad? Special Characters('⅜') displayed as Question Mark (?) in SQL Split and convert string to Int Split FullName into First, Middle and Last Split Function for number in where clause with in query...
SQLRETURN SQLGetInfo( SQLHDBC ConnectionHandle, SQLUSMALLINT InfoType, SQLPOINTER InfoValuePtr, SQLSMALLINT BufferLength, SQLSMALLINT * StringLengthPtr); 参数ConnectionHandle [输入] 连接句柄。InfoType [输入]信息类型。InfoValuePtr [输出]指向要在其中返回信息的缓冲区的指针。 根据所请求的 InfoType,返...
Special characters To explicitly match a special character in the character string, that special character must be preceded by an escape character defined using an ESCAPE clause specified at the end of the pattern. 16 The following table lists examples.OperationResultRule 'a' SIMILAR TO 'a' TRU...
STRING_ESCAPE( text , type ) Argumentstext Is a nvarchar expression representing the object that should be escaped.type Escaping rules that will be applied. Currently the value supported is 'json'.Return Typesnvarchar(max) text with escaped special and control characters. Currently STRING_ESCAPE ca...
String Data Types Data typeDescription CHAR(size)A FIXED length string (can contain letters, numbers, and special characters). Thesizeparameter specifies the column length in characters - can be from 0 to 255. Default is 1 VARCHAR(size)A VARIABLE length string (can contain letters, numbers, ...
Ruby on Rails has a built-in filter for special SQL characters, which will escape',", NULL character, and line breaks.UsingModel.find(id)orModel.find_by_some thing(something)automatically applies this countermeasure. But in SQL fragments, especiallyin conditions fragments (where("...")), the...