Refactor pools schema with state tables and VIEW pattern

[Copilot]

Refactors the pools schema to use separate state tables for initialization and fees, combined through a unified VIEW. Extends support to all DEX protocols (Uniswap V1-V4, SunPump, CurveFi, Balancer, Bancor).

Schema Refactoring

state_pools_initialize (renamed from pools)

• Tracks pool initialization events for all protocols
• Uses Array(String) for tokens with materialized columns for token0, token1, token2, token3
• Supports multi-token pools (e.g., Balancer with 4+ tokens)
• Removed fee column (moved to state_pools_fees)

state_pools_fees (renamed from pools_fees)

• Tracks both initial fees (from initialize events) and fee updates
• Uses ReplacingMergeTree(block_num) to maintain latest fee per pool
• Includes MVs for:
  • Initialize events: Uniswap V1-V4, CurveFi (PlainPoolDeployed, MetaPoolDeployed)
  • Fee updates: Balancer (SwapFeePercentage, AggregateSwapFeePercentage), Bancor (ConversionFeeUpdate), CurveFi (CommitNewFee, NewFee), SunPump (PurchaseFeeSet, SaleFeeSet)

pools VIEW

• Combines state_pools_initialize with latest fees from state_pools_fees
• Uses LEFT JOIN to include pools even without tracked fees
• Provides unified interface for querying complete pool information

Pool Creation MVs

• Uniswap V1: mv_uniswap_v1_new_exchange - Zero address + token pair
• Uniswap V2: mv_uniswap_v2_pair_created - Token pair array
• Uniswap V3: mv_uniswap_v3_pool_created - Token pair array
• Uniswap V4: mv_uniswap_v4_initialize - Currency pair array
• SunPump: mv_sunpump_token_create, mv_sunpump_token_create_legacy - Zero address + token pair
• CurveFi: mv_curvefi_plain_pool_deployed, mv_curvefi_meta_pool_deployed - Multi-token support via splitByChar
• Balancer: mv_balancer_pool_registered - Empty array (variable tokens)
• Bancor: mv_bancor_activation - Empty array (variable reserve tokens)

Implementation Notes

• Single-pair protocols (Uniswap V1, SunPump) use zero address for native currency as first token in array
• Multi-token pools (Balancer, Bancor) use empty array, tokens populated separately
• CurveFi uses splitByChar(',', coins) to convert comma-separated coins to array
• Balancer fee conversion: 1e18 fixed-point → basis points via division by 1e14
• Protocol naming uses hyphens (uniswap-v1) matching existing convention in swaps table
• CoW Protocol excluded (order-based DEX, no liquidity pools)

-- Example: CurveFi pool initialization with tokens array
CREATE MATERIALIZED VIEW mv_curvefi_plain_pool_deployed TO state_pools_initialize AS
SELECT block_num, block_hash, timestamp, minute, tx_hash,
       log_address AS factory,
       address AS pool,
       splitByChar(',', coins) AS tokens,
       'curvefi' AS protocol
FROM curvefi_plain_pool_deployed
WHERE length(splitByChar(',', coins)) >= 2
  AND arrayElement(splitByChar(',', coins), 1) != ''
  AND arrayElement(splitByChar(',', coins), 2) != '';

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add other protocols to pools MV</issue_title>
<issue_description>To your best ability, add all other missing protocols to pools MV in clickhouse-evm-dex

If there are no fees for certain protocols, use Nullable(UInt32) as current place holder.

For protocols that have changing fees, create a new table pools_fees to track latest updates using ReplacingMergeTree(block_num)</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add other protocols to pools MV #53

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[DenisCarriere]

@copilot Rename pools to state_pools_initialize, remove "fees" from this table

Additionally to state_pools_initialize, update the schema to make tokens as Array(String), like this:

Rename pools_fees to state_pools_fees and also include initialize events to determine initial fees.

Then create a schema.3.view.pools a pool VIEW which combines both tables together

[Copilot]

@copilot Rename pools to state_pools_initialize, remove "fees" from this table

Additionally to state_pools_initialize, update the schema to make tokens as Array(String), like this:...

Done in c9e3987.

Changes made:

• Renamed pools to state_pools_initialize with tokens as Array(String) and materialized columns for token0-token3
• Renamed pools_fees to state_pools_fees and added initialize event MVs for initial fees (Uniswap V1-V4, CurveFi)
• Created schema.3.view.pools VIEW combining both tables with LEFT JOIN to get latest fees