I have some query to match a URL address, but the URL contains a special character '?' which I don't know how to escape.
the query is like:
select *
from table
where url = 'www.someaddress.com/**?something**=sth';
Any ideas?
You need to use an ESCAPE.
where url = 'www.someaddress.com/**?something**=sth';
would be
where url = 'www.someaddress.com/**#?something**=sth' ESCAPE '#';
Related
I would like to run a query like the following on Amazon Athena
Select * from my_table
where my_table.my_field like '%'sample_text'%'
I want to match the single quotes and the underscore in 'sample_text'.
I've tried variations of escape characters like \_, \\_, [_], `_, and `_` without success.
Is this possible?
To escape special characters in LIKE use ESCAPE parameter:
Wildcard characters can be escaped using the single character specified for the ESCAPE parameter.
WITH dataset (str) AS (
VALUES ('sample_text '),
('sample text ')
)
SELECT *
FROM dataset
WHERE str like 'sample\_text%' ESCAPE '\'
Output:
str
sample_text
I'm trying to escape an underscore in a like operator but not getting any results. I'm trying to find any rows with a value like 'aa_'.
WHERE value LIKE '%aa\\_%'
Use ESCAPE:
Wildcard characters can be escaped using the single character specified for the ESCAPE parameter.
WITH dataset (str) AS (
VALUES ('aa_1'),
('aa_2'),
('aa1')
)
SELECT *
FROM dataset
WHERE str like 'aa\_%' ESCAPE '\'
Output:
str
aa_1
aa_2
Can anyone help me out with this-
There is a column in the database as "TEXT".
This column hold some string value.
I want to search any row that is having '%' in this column .
For eg how will i search for a row having value 'Vivek%123' in the column TEXT
In sql there is something known as an escape character, basically if you use this character it will be ignored and the character right behind it will be used as a literal instead of a wildcard in the case of %
WHERE Text LIKE '%!%%'
ESCAPE '!'
The above sql statement will allow you to search for any string containing a percentage character '%' so it could find anything in the format of
string%string
You must escape the % character
WHERE COL1 LIKE 'Vivek#%123' ESCAPE '#' ;
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 have this situation on my azure database where I need to search for any rows that contains the _ character. This is a special character on the database so I try to escape it but I get every row as a result.
select * from table where fieldColumn like '%_%'
will return everything on the table
select * from table where fieldColumn like '%\_%'
returns nothing
select * from table where fieldColumn = '_'
works
so how can i get that row that has only one _ and all the other ones that may have the _ on the string?
You can set whatever escape character you want, like this:
select * from table where fieldColumn like '%!_%' ESCAPE '!'
Here I am using the ! as an escape character to tell SQL Server to treat the following character, the _ , as a string literal.
See the documentation for more info: http://technet.microsoft.com/en-us/library/ms179859.aspx
select * from table where fieldColumn like '%_%' escape '\';
LIKE:
escape_character
Is a character that is put in front of a wildcard character to indicate that the wildcard should be interpreted as a regular character and not as a wildcard. escape_character is a character expression that has no default and must evaluate to only one character.