NamedExec unable to form bulk insert query

[RajatBanerjee]

in v 1.2.1 while performing a NamedExec with a slice of interface

INSERT INTO foo (foo_nm, ins_user) VALUES (:foo_nm, :ins_user) ON DUPLICATE KEY UPDATE foo_nm = values(foo_nm),upd_user = values(ins_user)

data := []interface{} _, err := sqlx.NamedExec(db, query, data)`

would produce via bindNamedMapper (assume data had 2 values)
INSERT INTO foo (foo_nm, ins_user) VALUES (?, ?).(?,?) ON DUPLICATE KEY UPDATE foo_nm = values(foo_nm),upd_user = values(ins_user)

However in 1.3.1
This becomes
INSERT INTO foo (foo_nm, ins_user) VALUES (?, ?) ON DUPLICATE KEY UPDATE foo_nm = values(foo_nm),upd_user = values(ins_user),(ins_user)

Notice the extra ins_user instead of (?,?) after values

I suspect its due to
https://github.com/jmoiron/sqlx/blob/master/named.go#L227
which was regexp.MustCompile(([^(]?+[^)]))

[Mungrel]

That regex also causes issues when trying to use SQL procedures/functions in a named query #713

[RajatBanerjee]

Reverting back to 1.2.0
However in 1.2.0 there is an issue with []map[string]interface{} , had to use a struct with db fields

[jmoiron]

should be fixed with v1.3.2