Something like
SELECT * FROM table WHERE table.column LIKE '?*'
What does that mean?
The question mark ? character will only search for a single character, and asterisk * character will search for all characters.
This combination will search for table.column containing atleast 1 character.
Related
What I want to do is I want to filter from a table where it specifically starts with something but when I try to filter out 'BRA_' it should only give me fields that has BRA_ on it and not BRAzil BRAma which is what the Like % operator is giving me. I also tried using Like _ but that only took the underscore out completely. Is there a way to do this?
SELECT *
FROM MyTable
WHERE MyColumn Collate Latin1_General_CS_AS LIKE 'BRA?_' ESCAPE '?'
In the LIKE operator, ESCAPE create your own escape char that must be placed before the joker character that you would find as a litteral in the string.
How to avoid selecting row which has special symbol like mentioned below .
We can use range of ASCII character as below. CHAR(n) returns character value of integer ASCII code n
SELECT *
FROM yourTable
WHERE ID NOT LIKE '%['+CHAR(32) +'-'+CHAR(126)+']%'
OR Name NOT LIKE '%['+CHAR(32) +'-'+CHAR(126)+']%';
Refer ASCII characters
You could use SQL Server's enhanced LIKE operator:
SELECT *
FROM yourTable
WHERE ID NOT LIKE '%[^A-Za-z0-9_-]%' AND Name NOT LIKE '%[^A-Za-z0-9_-]%';
This would select only rows where both ID and Name columns do not contain any special characters. Special characters here are defined as anything other alphanumeric, underscore, and hyphen.
Below query condition doesn't work
For eg :
SELECT * FROM NAME WHERE (NAME_MA LIKE N'%%')
SELECT * FROM NAME WHERE HEX(NAME_MA) LIKE '%E2808D%')
E2808D is Hex representation for ZWJ character.
Similarly you can use E2808C for ZWNJ character if you are interested.
Text = “World“ world ” <world <Word> ‘ word’ ‘ word“ word’ =1254.25 = 2545.58. 20%
Hey guys,
I need to search a word from a string which was saved in my db. The searching word contains special characters such as ""'!##$%^<>. Below is the sql select query used for the search.
select * from TABLE where TABLE.text like ('%'+ '“ World' +'%')
as a result some of the special character are not searched. Characters such as double quotation, single quotation are not searched from this. need assistance with solving this problem asap. thank you :)
These Special characters are Unicode characters, When ever dealing with these characters in sql server you have to tell sql server explicitly that there can be some unicode characters in the strings you are about to manipulate by prefixing your strings with N'String'
In your case you would write a query something like ....
select * from TABLE
where TABLE.text like N'%'+ N'“ World' + N'%'
you can use the ESCAPE clause and escape your parameter value. http://technet.microsoft.com/en-us/library/ms179859.aspx
so for example to search for a string containing the character %
select * from TABLE where TABLE.text like ('%'+ N'\%' +'%') ESCAPE '\'
I'm trying to query a table with a like statement. Is _ considered a wildcard symbol in postgres? Would
select * from table where field1 like '%_123_%'
return the same thing as
select * from table where field1 like '%123%'
Here is an example from the official documentation regarding wildcards in Postgres:
'abc' LIKE 'abc' true
'abc' LIKE 'a%' true
'abc' LIKE '_b_' true
'abc' LIKE 'c' false
_ is a wildcard for one character, while % is a wildcard for multiple characters.
Yes, _ is a wildcard symbol that matches one character. It can't be an empty match, so no, those statements are not the same. The first requires the string be at least 5 characters long while the second only requires 3 characters.
If you're familiar with regexes, %123% is equivalent to .*123.*, while %_123_% is equivalent to .+123.+.
From the PostgreSQL manual:
To match a literal underscore or percent sign without matching other characters, the respective character in pattern must be preceded by the escape character. The default escape character is the backslash but a different one can be selected by using the ESCAPE clause. To match the escape character itself, write two escape characters.
yes
_ matches one char while % matches lots of chars.