Hello,

Is there a simple way/command/function to check whether two strings have
at least one overlap character please?

For example,

str1: 05baaa
str2: ooboo

Query: select str1 ??? str2 ;

Result: true

Because b is in both str1 and str2.

Thank you!

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match

Emi Lu wrote:
> Is there a simple way/command/function to check whether two
> strings have at least one overlap character please?
>
> For example,
>
> str1: 05baaa
> str2: ooboo
>
> Query: select str1 ??? str2 ;
>
> Result: true
>
> Because b is in both str1 and str2.

SELECT str1 ~ ( '[' || str2 || ']');

See
http://www.postgresql.org/docs/curre...tching.html#FU
NCTIONS-POSIX-REGEXP

Yours,
Laurenz Albe

---------------------------(end of broadcast)---------------------------
TIP 6: explain analyze is your friend