filter() expects you to use the raw PostgREST syntax for the filter values.
.filter("id", operator: "in", value: "(5,6,7)") // Use `()` for `in` filter
.filter("arraycol", operator: "cs", value: #"\{"a","b"\}"#) // Use `cs` for `contains()`, `\{\}` for array values
try await supabase
.from("instruments")
.select()
.filter("name", operator: "in", value: #"("cello","guzheng")"#)
try await supabase
.from("orchestral_sections")
.select(
"""
name,
instruments!inner (
name
)
"""
)
.filter("instruments.name", operator: "eq", value: "flute")