Function rewrite_cosine_distance

nodedb-sql/src/parser/preprocess/vector_ops.rs:91–93

Rewrite all occurrences of `expr <=> expr` to `vector_cosine_distance(expr, expr)`. Handles: `column_name <=> ARRAY[...]`, `column <=> $param`, etc. Returns `None` if no valid `<=>` patterns are found outside string literals, quoted identifiers, or comments.

(sql: &str)

/// Returns `None` if no valid `<=>` patterns are found outside string
/// literals, quoted identifiers, or comments.
pub(super) fn rewrite_cosine_distance(sql: &str) -> Option<String> {
    rewrite_binary_op(sql, "<=>", "vector_cosine_distance")
}

/// Rewrite all occurrences of `expr <#> expr` to `vector_neg_inner_product(expr, expr)`.
///