Fix #144 by not requiring value dicts to only have named parameters. … (#191)

* Fix #144 by not requiring value dicts to only have named parameters. If the values dict doesn't have a named parameter, throw a helpful error

* fix

Author: quinnj

src/SQLite.jl

@@ -124,13 +124,13 @@ function bind!(stmt::Stmt, values::Vector)
 end
 function bind!(stmt::Stmt, values::Dict{Symbol, V}) where {V}
     nparams = sqlite3_bind_parameter_count(stmt.handle)
-    @assert nparams == length(values) "you must provide values for all query placeholders"
     for i in 1:nparams
         name = unsafe_string(sqlite3_bind_parameter_name(stmt.handle, i))
         @assert !isempty(name) "nameless parameters should be passed as a Vector"
         # name is returned with the ':', '@' or '$' at the start
-        name = name[2:end]
-        bind!(stmt, i, values[Symbol(name)])
+        sym = Symbol(name[2:end])
+        haskey(values, sym) || throw(SQLiteException("`$name` not found in values Dict to bind to sql statement"))
+        bind!(stmt, i, values[sym])
     end
 end
 # Binding parameters to SQL statements