To search for the percent sign or underscore, define an escape character and put it before the percent sign or underscore. The following code uses the backslash as the escape character, so that the percent sign in the string does not act as a wildcard. ...
Introduction to Escape Character SQL Escape Characters in SQL are mostly used in the literal strings to mention them before any character whose interpretation and behavior needs to be changed. The meaning of that character turns out to be different from its usual meaning of that character. The li...
SELECT emp_id FROM emp WHERE emp_id like '%SA\_%' ESCAPE '\';The ESCAPE identifier identifies the backslash(\) as the escape character.In the SQL statement, the escape character precedes the underscore(_).This causes the ORACLE server to interpret the underscore literally.IS (NOT) NULL ...
the escape character is discarded and the character following the escape is treated as a regular character in the pattern. This includes the percent sign (%), underscore (_), and
<string> SIMILAR TO <similar to pattern> [ESCAPE <escape character>] Concatenation This operator is used to concatenate one or more strings as shown in the following table. OperationResult 'SQL'||'stream' SQLstream 'SQL'||''||'stream' SQLstream 'SQL'||'stream'||' Incorporated' SQ...
character in the pattern. These characters include the percent sign (%), underscore (_), and left bracket ([) wildcard characters when they are enclosed in double brackets ([ ]). Escape characters can be used within the double bracket characters ([ ]), including to escape a caret (^),...
There are only two non-alphabetic characters that can occur within an XML name: the colon (:) and the underscore (_). Because the colon is already reserved for namespaces, the underscore is chosen as the escape character. Following are the escape rules that are used for encoding: ...
In this function, we have used '|' as an escape character and you can see we used '||' to replace '|' so we get the correct results. After calling the function for '_my' parameter and using the same logic as in the previous example, we will have the same correct result...
There are only two non-alphabetic characters that can occur within an XML name: the colon (:) and the underscore (_). Because the colon is already reserved for namespaces, the underscore is chosen as the escape character. Following are the escape rules that are used for encoding:...
The underscore in the third character position is taken as a wildcard, and is not filtering for only principals starting with the letters db_. To escape the underscore enclose it in brackets [_]. SQL Copy SELECT name FROM sys.database_principals WHERE name LIKE 'db[_]%'; Now th...