yanghuanglin
e2e5939810
新增 Sequences 增加 updateTime 新增 增加查询序号是否锁定的方法 locked 新增 增加将序号设为未使用的方法 unused 新增 增加 SequencesUnlock find(SequencesUnlock sequencesUnlock) 和 SequencesUnused find(SequencesUnused sequencesUnused)
32 lines
1.0 KiB
PL/PgSQL
32 lines
1.0 KiB
PL/PgSQL
CREATE TABLE IF NOT EXISTS "sequences"
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(
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"key" VARCHAR(64) NOT NULL,
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"type" VARCHAR(64) NOT NULL,
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"seq" INT8 NOT NULL,
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"update_time" TIMESTAMP,
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PRIMARY KEY ("key", "type")
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);
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COMMENT ON TABLE "sequences" IS '当前序号表';
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COMMENT ON COLUMN "sequences"."key" IS '序号英文名称';
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COMMENT ON COLUMN "sequences"."type" IS '序号类型';
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COMMENT ON COLUMN "sequences"."seq" IS '已使用到的序号';
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COMMENT ON COLUMN "sequences"."update_time" IS '最后使用时间';
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/*
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触发器函数，用户更新update_time字段
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*/
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CREATE OR REPLACE FUNCTION SEQUENCES_UPDATE_TIME() RETURNS TRIGGER AS $$
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BEGIN
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NEW."update_time" := current_timestamp;
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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/*
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@触发器设置，功能：自动记录更新时间
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@触发器名为 SEQUENCES_UPDATE_TIME
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@触发器执行范围为每行生效
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*/
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DROP TRIGGER IF EXISTS SEQUENCES_UPDATE_TIME ON "sequences" CASCADE;
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CREATE TRIGGER SEQUENCES_UPDATE_TIME BEFORE UPDATE ON "sequences" FOR EACH ROW EXECUTE FUNCTION SEQUENCES_UPDATE_TIME(); |