29 lines
1.3 KiB
SQL
29 lines
1.3 KiB
SQL
-- W14 回合2（B09）：任务范围与实际消费的不可变上下文快照。
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-- 快照身份由载荷确定性派生，同一输入重复冻结幂等为一行；历史快照只读不改写。
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DO $migration$
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DECLARE
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namespace text;
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BEGIN
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FOREACH namespace IN ARRAY ARRAY['public', 'evaluation'] LOOP
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EXECUTE format($ddl$
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CREATE TABLE %1$I.muse_context_snapshot (
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snapshot_id uuid PRIMARY KEY,
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run_purpose public.muse_purpose NOT NULL,
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task_id uuid NOT NULL REFERENCES %1$I.muse_task(task_id),
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work_id text NOT NULL,
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input_hash text NOT NULL,
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frozen_scope jsonb NOT NULL,
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assembly jsonb NOT NULL,
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source_bindings jsonb NOT NULL,
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created_by text NOT NULL,
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created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
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UNIQUE (run_purpose, task_id, input_hash),
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CHECK (assembly ? ALL (ARRAY['入选','省略','字节数','文本哈希','文本'])),
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CHECK (jsonb_typeof(source_bindings) = 'array')
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);
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CREATE INDEX ON %1$I.muse_context_snapshot (task_id, created_at);
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$ddl$, namespace);
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END LOOP;
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END
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$migration$;
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