Re: Concatenation issue for atomic values - KX Learning Hub

rocuinneagain

Member
October 6, 2021 at 12:00 am
All of these items are equivalent:
```
q)"10" 
"10" 
q)("1";"0") 
"10" 
q)("10") 
"10"
```
They all resolve to 2 item lists containing characters

https://code.kx.com/q/basics/datatypes/

Here are some more example queries which may help:
```
q)select from t where Vals in `$/:("1";"10") 
Vals 
---- 
1 10 

q)select from t where Vals in `$/:("1";"0") 
Vals 
---- 
1 0 

q)select from t where Vals in `$"10" 
Vals 
---- 
10 

q)select from t where Vals in `$"1" 
Vals 
---- 
1
```
You can use ‘=’ rather than ‘in’ if you are searching for only one value:
```
q)select from t where Vals=`$"1" 
Vals 
---- 
1
```
You can input your symbols directly rather than casting:

q)`0`1`10 `0`1`10