# `Ash.Query.Function.StringPosition`
[🔗](https://github.com/ash-project/ash/blob/v3.27.8/lib/ash/query/function/string_position.ex#L5)

Returns the zero-based position of a substring within a string, nil if the string does not contain the substring.

Case insensitive strings are accounted for on either side.

   string_position("foo", "fo")
   0

   string_position(%Ash.CiString{string: "foo"}, "FoO")
   0

   string_position("foo", %Ash.CiString{string: "FOO"})
   0

# `args`

# `has_partial_evaluate?`

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*Consult [api-reference.md](api-reference.md) for complete listing*