feat(holders): add is_contract flag on /v1/evm/holders#534
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Adds an is_contract boolean field to /v1/evm/holders and /v1/evm/holders/native, derived from the indexed contracts table. Lets consumers compute accurate concentration metrics without per-address eth_getCode round trips against an external RPC. The SQL pattern materializes top-N balances once into a row array then expands via arrayJoin, reusing the address list to pre-filter the contracts lookup via primary key. Avoids the full-table hash build a plain JOIN would trigger. Closes #523 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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feat/holders-is-contract - token-api PR #534
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Summary
is_contract: booleanto/v1/evm/holdersand/v1/evm/holders/nativeresponses, derived from the existing indexedcontractstable.eth_getCoderound trips. Top-10 holder lists routinely look catastrophic (90%+ concentration) until you discount addresses that are bridges, staking modules, LP pools, or vesting timelocks — this flag closes that gap server-side.SQL pattern
A straightforward
LEFT ANY JOIN contracts AS c ON c.address = b.addresscauses ClickHouse to build a hash from the full contracts table regardless of how few left-side addresses we have. Runtime filter pushdown happens after the read, not at the primary-key index level.To avoid that, the new SQL:
groupArray(tuple(...)).arrayJoin(arrayMap(...))) as a constantINpredicate on the contracts table — small literal set, primary-key index pruning kicks in.arrayJoinin the mainFROM— no secondbalances FINALpass.Result:
balances FINALruns once; the contracts read is bounded by the looked-up addresses.🤖 Generated with Claude Code