In SQL, you can use cast or convert to convert a string to an integer so you can compare numerical values, i.e.
SELECT * FROM table1 WHERE CAST(col1 AS int) < 100
Is it possible to do the same thing in YQL?
The following doesn't work:
SELECT * FROM json WHERE url='url_goes_here' AND CAST(col1 AS int) < 100
It gives me 0 results. I should be getting more.
In both queries, col1 is a string.
YQL is not exactly SQL per say. It is a "SQL like" language. It does not query a database instead in the background makes REST calls to the backends.
Since I don't know what table you are querying, from what I understood from the question, what you are saying can be achieved. Read the yql doc here. Sample query select * from local.search where query="sushi" and location="san francisco, ca" and Rating.TotalRatings < "12"
I know its strange that we are comparing against a string value but it does work. You can test this on the YQL console here (just copy paste the query in the text box). Let me know if you have any questions/concerns. I will try to answer it to best of my knowledge.
Related
This is the SQL Code for my query
`
SELECT tbl_salaries.Mobile_PK, Len([Mobile_PK]) AS Expr1
FROM tbl_salaries
WHERE (((Len([Mobile_PK]))>10));`
Result:
I dont know what is going wrong i was working with this database for 2 months with no problems all of a sudden all my queries with relational operators are inverted. NEED YOUR HELP
Got an answer form MS Coomunity
Len function not to be used with Number field.
The direct approach is to use Mobile_PK>=1000000000
I am currently using this formula to get all the data from everyone whose first name is "Peter", but my problem is that if someone is called "Simon Peter" this data is gonna show up on the formula output.
=QUERY('Data'!1:1000,"select * where B contains 'Peter'")
I know that for the other formulas if I add an * to the String this issue is resolved. But in this situation for the QUERY formula the same logic do not applies.
Do someone knows the correct syntax or a workaround?
How about classic SQL syntax
=QUERY('Data'!1:1000,"select * where B like 'Peter %'")
The LIKE keyword allows use of wildcard % to represent characters relative to the known parts of the searched string.
See the query reference: developers.google.com/chart/interactive/docs/querylanguage You could split firstname and lastname into separate columns, then only search for firstnames exactly equal to 'Peter'. Though you may want to also check if lowercase/uppercase where lower(B) contains 'peter' or whitespaces are present in unexpected places (e.g., trim()). You could also search only for values that start with Peter by using starts with instead of contains, or a regular expression using matches. – Brian D
It seems that for my case using 'starts with' is a perfect fit. Thank you!
I'm creating an aggregate from a anstime column in a view table in Denodo and I'm using a Cast to convert it to float and it works only for those numbers with period (example 123.123) but does not work for the numbers without period (example 123). Here's my code which only works for those numbers with period:
SELECT row_date,
case
when sum(cast(anstime as float)) is null or sum(cast(anstime as float)) = 0
then 0
else sum(cast(anstime as float))
end as xans
FROM table where anstime like '%.%'
group by row_date
Can someone please help me how to handle those without period?
My guess is you've got values in anstime which are are not numeric, hence why not having the where anstime like '%.%' predicate causes a failure, as has been mentioned in other comments.
You could try adding in an intermediate view before this one which strips out any non numeric values (leaving the decimal point character of course) and this might then allow you to not have to use the where anstime like '%.%' filter.
Perhaps the REGEXP function which would possibly help there
Your where anstime like '%.%' clause is going to restrict possible responses to places where anstime has a period in it. Remove that if you want to allow all values.
I appreciate those who responded to my concern. In the end we had to reach out to our developers to fix the data type of the column from varchar to float rather than doing a workaround.
I have array of strings:
a = ['*#foo.com', '*#bar.com', '*#baz.com']
I would like to query my model so I will get all the records where email isn't in any of above domains.
I could do:
Model.where.not(email: a)
If the list would be a list of strings but the list is more of a regexp.
It depends on your database adapter. You will probably be able to use raw SQL to write this type of query. For example in postgres you could do:
Model.where("email NOT SIMILAR TO '%#foo.com'")
I'm not saying thats exactly how you should be doing it but it's worth looking up your database's query language and see if anything matches your needs.
In your example you would have to join together your matchers as a single string and interpolate it into the query.
a = ['%#foo.com', '%#bar.com', '%#baz.com']
Model.where("email NOT SIMILAR TO ?", a.join("|"))
Use this code:
a = ['%#foo.com', '%#bar.com', '%#baz.com']
Model.where.not("email like ?",a.join("|"))
Replace * to % in array.
I have the following sample code. The objective is to run SQL statement with multiple input parameters.
[<Literal>]
let connectionString = #"Data Source=Localhost;Initial Catalog=Instrument;Integrated Security=True"
[<Literal>]
let query = "SELECT MacroName, MacroCode FROM Instrument WHERE MacroCode IN (#codeName)"
type MacroQuery = SqlCommandProvider<query, connectionString>
let cmd = new MacroQuery()
let res = cmd.AsyncExecute(codeName= [|"CPI";"GDP"|]) |> Async.RunSynchronously
However, codeName is inferred to be string type instead of an array or list and give me an error.
Alternatively, I could run the query without where statement and filter based on the result. However, in lots of other cases that returns millions of rows, I would prefer filter data at the SQL server level to be more efficient.
I didn't find any relevant samples on the documentation of fsharp.data.sqlclient. Please help!
"See Table-valued parameters (TVPs)" section in the documentation:
http://fsprojects.github.io/FSharp.Data.SqlClient/configuration%20and%20input.html
If you have an upper bound n on the values in the IN list, you could just make n parameters. If that's unmanageable, I'm afraid the TVP suggestion is your best option. The reason the FSharp.Data.SqlClient library is unlikely to ever support this directly is because the types are generated based on results from sp_describe_undeclared_parameters; there's no T-SQL parser. We had a single digit upper bound in this scenario and were loathe to change the database, so this option worked for us.
You can use STRING_SPLIT to abstract away the use of table-valued parameters. It seems you have to also declare the param first.
DECLARE #param varchar(1000) = #commaSeparatedList
SELECT Col1 FROM MyTable
WHERE Col2 IN (
SELECT value FROM STRING_SPLIT(#param, ',')
)