If a field value in the table of SQL Server is like A(B) and if I to write a query
SELECT * FROM MyTable WHERE MyField = 'A(B)'
it is not returning any result. How to handle this situation?
Your query should work fine, if you want to specify a different escape parameter, you can use ESCAPE.
WHERE column LIKE '%A#(B#)%' ESCAPE '#'
Also, if you want to match anything that contains "A(B)", don't forget to surround it by percetages symbols.
Related
I am trying to use a hyphen in a SQLite LIKE string, but it is not working.
Sample search string:
SELECT Name from Table where Name LIKE 'abc - %'
This returns zero results. Whereas the following will, of course, return all names that start with 'abc'.
SELECT Name from Table where Name LIKE 'abc%'
I've tried using the ESCAPE clause like this:
SELECT Name from Table where Name LIKE 'abc !-' ESCAPE '!'
But again, no Names are returned.
Oddly, all of the other questions seem to refer to escaping the '%' and '_' characters, but none address the escaping of the '-' (hyphen).
How can I do this?
After further investigation, it appears that the lack of results when a hyphen is present is a bug in SQLiteStudio (using V3.1.0) the GUI I'm using with SQLite. When I tried the SQL statement (with the '-' and without the ESCAPE clause) in the Command Line Interface, it returned the expected results.
I have a table called project-users and want to write a SQL query like SELECT * FROM project-users I get this error ERROR: syntax error at or near "-".
I cannot change the table name at this point.
According to http://www.postgresql.org/docs/9.0/static/sql-syntax-lexical.html, you should use double quotes.
In your case, for PostgreSQL the query should be:
SELECT * FROM "project-users";
It is good practice to avoid the use of characters that need escaping or that contain spaces in identifiers.
I have some data in my table's column upn.
Here is a small sample set of this data.
Pasquale.Rombolà#it.eurw.domain.net
JuanMaria.RomanGonçalves#eurs.domain.net
Santo.Paternò#it.eurw.domain.net
Peter.Browne#UK.EURW.domain.net
François.ESTIN#fr.eurw.domain.net
Frédéric.Huynh#fr.eurw.domain.net
Frédérique.Psaume#fr.eurw.domain.net
Laura.PiñeiroGomez#eurs.domain.net
Maria.AranzabalSaldaña#eurs.domain.net
Alberto.RubioMuñoz#eurs.domain.net
Peter.Brüggemann#UK.EURW.domain.net
Russel.Peters#CA.domain.net
I want to query this table for UPN values where I have some special characters in the UPN. So my query should not return upns such as:
Peter.Browne#UK.EURW.domain.net
and
Russel.Peters#CA.domain.net
But returns everything else with special characters such as [à,ò,ñ,ü ...etc]
I have tried this query but it doesn't work.
Select * from TableName
Where [UPN] like %[a-z,0-9,#,\.,-,A-Z]%
It returns everything including those which don't have any special characters.
Please help.
If I understand correctly, I think you'll just need to add a "^" as the first character inside the square brackets.
At present you're saying you want to return all those UPNs where one or more characters is in the list you give (i.e. the "ordinary" characters). The "^" should reverse that and give you all the UPNs where at least one of the characters is not in the list you give.
Update: After testing locally ... Make sure your collation is "Accent Sensitive" (if necessary add "Latin1_General_CI_AS" or similar after your "like" clause.
I found it only worked if rather than "A-Z", I actually typed out the whole alphabet.
You need to add binary collate clause in it. Chose necessary collation as per your data. For given sample data Latin1_General_BIN works. Here is the link for collation in sql server.
This snippet worked for me on my machine-
create table #t (name varchar(100));
insert into #t values
('Pasquale.Rombolà#it.eurw.domain.net'),
('JuanMaria.RomanGonçalves#eurs.domain.net'),
('Santo.Paternò#it.eurw.domain.net'),
('Peter.Browne#UK.EURW.domain.net'),
('François.ESTIN#fr.eurw.domain.net'),
('Frédéric.Huynh#fr.eurw.domain.net'),
('Frédérique.Psaume#fr.eurw.domain.net'),
('Laura.PiñeiroGomez#eurs.domain.net'),
('Maria.AranzabalSaldaña#eurs.domain.net'),
('Alberto.RubioMuñoz#eurs.domain.net'),
('Peter.Brüggemann#UK.EURW.domain.net'),
('Russel.Peters#CA.domain.net');
select * from #t where name not like '%[^a-zA-Z0-9#.]%' COLLATE Latin1_General_BIN;
Output-
Peter.Browne#UK.EURW.domain.net
Russel.Peters#CA.domain.net
I need to find the '&' in a string.
SELECT * FROM TABLE WHERE FIELD LIKE ..&...
Things we have tried :
SELECT * FROM TABLE WHERE FIELD LIKE '&&&'
SELECT * FROM TABLE WHERE FIELD LIKE '&\&&'
SELECT * FROM TABLE WHERE FIELD LIKE '&|&&' escape '|'
SELECT * FROM TABLE WHERE FIELD LIKE '&[&]&'
None of these give any results in SQLServer.
Well some give all rows, some give none.
Similar questions that didn't work or were not specific enough.
Find the % character in a LIKE query
How to detect if a string contains special characters?
some old reference Server 2000
http://web.archive.org/web/20150519072547/http://sqlserver2000.databases.aspfaq.com:80/how-do-i-search-for-special-characters-e-g-in-sql-server.html
& isn't a wildcard in SQL, therefore no escaping is needed.
Use % around the value your looking for.
SELECT * FROM TABLE WHERE FIELD LIKE '%&%'
Your statement contains no wildcards, thus is equivalent to WHERE FIELD = '&'.
& isn't a special character in SQL so it doesn't need to be escaped. Just write
WHERE FIELD LIKE '%&%'
to search for entries that contain & somewhere in the field
Be aware though, that this will result in a full table scan as the server can't use any indexes. Had you typed WHERE FIELD LIKE '&%' the server could do a range seek to find all entries starting with &.
If you have a lot of data and can't add any more constraints, you should consider using SQL Server's full-text search to create and use and FTS index, with predicates like CONTAINS or FREETEXT
How to retrieve a column containing special characters including alphabets in SQL Query. i have a column like this 'abc%def'. i want to retrieve '%' based columns from that table.
Please help me in this regard.
Is abc%def the column name? or column value? Not sure what you are asking but if you mean your column name contains special character then you can escape them which would be different based on specific RDBMS you are using
SQL Server use []
select [abc%def] from tab
MySQL use backquote
select `abc%def` from tab
EDIT:
Try like below to fetch column value containing % character (Checked, it works in Ingres as well)
select * from tab where col like '%%%'
Others suggest that like '%%%' works in Ingres. So this is something special in Ingres. It does not work in other dbms.
In standard SQL you would have to declare an escape character. I think this should work in Ingres, too.
select * from mytable where str like '%!%%' escape '!';