Merge pull request #33 from cowprotocol/add-schema

Add schema

src/sql/schema.sql

@@ -0,0 +1,35 @@
+-- Database Schema for Token Imbalances and Slippage
+
+-- Table: raw_token_imbalances (for storing raw token imbalances)
+CREATE TABLE raw_token_imbalances (
+    auction_id BIGINT NOT NULL,
+    chain_name VARCHAR(50) NOT NULL,
+    block_number BIGINT NOT NULL,
+    tx_hash BYTEA NOT NULL,
+    token_address BYTEA NOT NULL,
+    imbalance NUMERIC(78,0)
+);
+
+-- Table: slippage_prices (for storing per unit token prices in ETH)
+CREATE TABLE slippage_prices (
+    chain_name VARCHAR(50) NOT NULL,
+    source VARCHAR(50) NOT NULL,
+    block_number BIGINT NOT NULL,
+    tx_hash BYTEA NOT NULL,
+    token_address BYTEA NOT NULL,
+    price NUMERIC(42,18),
+    PRIMARY KEY (tx_hash, token_address)
+);
+
+-- Table: Stores fees (i.e. protocol fee, network fee on per token basis)
+CREATE TABLE fees (
+    chain_name VARCHAR(50) NOT NULL,
+    auction_id BIGINT NOT NULL,
+    block_number BIGINT NOT NULL,
+    tx_hash BYTEA NOT NULL,
+    token_address BYTEA NOT NULL,
+    fee_amount NUMERIC(78,0) NOT NULL,
+    fee_type VARCHAR(50) NOT NULL, -- e.g. "protocol" or "network"
+    PRIMARY KEY (tx_hash, token_address)
+);
+