Function with_agg_build_key

src/cypher/cypher.c:3835–3849

Build a group key from non-aggregate WITH items */

/* Build a group key from non-aggregate WITH items */
static int with_agg_build_key(cbm_return_clause_t *wc, binding_t *b, char *key, size_t key_sz) {
    int kl = 0;
    for (int ci = 0; ci < wc->count; ci++) {
        if (is_aggregate_func(wc->items[ci].func)) {
            continue;
        }
        char vbuf[CBM_SZ_512];
        const char *v = project_item(b, &wc->items[ci], vbuf, sizeof(vbuf));
        kl += snprintf(key + kl, key_sz - (size_t)kl, "%s|", v);
        if (kl >= (int)key_sz) {
            kl = (int)key_sz - SKIP_ONE;
        }
    }
    return kl;
}

/* Find or create an aggregation group. Returns index. */
static int with_agg_find_or_create(with_agg_t **aggs, int *agg_cnt, int *agg_cap,