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19 lines
683 B
SQL
19 lines
683 B
SQL
CREATE TABLE wallets
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(
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user_id BIGINT PRIMARY KEY,
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balance DECIMAL(12, 2) NOT NULL DEFAULT 0.00, -- 可用余额
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frozen_balance DECIMAL(12, 2) NOT NULL DEFAULT 0.00, -- 冻结余额
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version INT NOT NULL DEFAULT 1, -- 必须使用乐观锁
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updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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CONSTRAINT chk_balance_non_negative CHECK (balance >= 0),
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CONSTRAINT chk_frozen_non_negative CHECK (frozen_balance >= 0)
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);
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CREATE INDEX idx_wallets_updated ON wallets (updated_at DESC);
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CREATE TRIGGER trigger_wallets_updated_at
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BEFORE UPDATE
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ON wallets
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FOR EACH ROW
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EXECUTE FUNCTION update_updated_at_column(); |