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我有一个表叫它 scdr_buz 并且每月对它进行分区，我在插入时创建了触发器，它负责 upsert 并创建表，如果不存在则 upsert。我有序列 i_buz_scdr 序列，增量为 1，但它的行为是随机添加行而不是增量 1。这是我的触发器的代码：

CREATE OR REPLACE FUNCTION tbl_scdr_buz_insert_trigger() RETURNS TRIGGER AS $$
BEGIN
    EXECUTE 'UPDATE scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||' sc SET c_total_calls = sc.c_total_calls + ($1).c_total_calls WHERE (sc.c_prefix_id = ($1).c_prefix_id AND sc.v_prefix_id = ($1).v_prefix_id AND sc.start_time = ($1).start_time)'
    USING NEW;
    EXECUTE 'INSERT INTO scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||'(customer_name, ...) Select ($1).* 
 WHERE NOT EXISTS (SELECT * FROM scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||' WHERE (...))'
    USING NEW;
    RETURN NULL;
    EXCEPTION
        WHEN undefined_table THEN
            EXECUTE 'CREATE TABLE IF NOT EXISTS scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||' (CHECK ( start_time >= '''|| to_char(NEW.start_time, 'YYYY-MM-01 00:00') ||''' AND start_time < '''|| to_char(NEW.start_time + INTERVAL '1 month', 'YYYY-MM-01 00:00') ||''' )) INHERITS (scdr_buz)';
            EXECUTE 'CREATE INDEX i_buz_scdr_'|| to_char(NEW.start_time, 'YYYY_MM') ||' ON scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||' (switch_name, customer_name, client_name_id, vendor_name_id, vendor_connection, c_prefix_id, v_prefix_id, start_time, c_billing_prefix, v_billing_prefix)';
            EXECUTE 'CREATE INDEX i_buz_scdr_starttime_'|| to_char(NEW.start_time, 'YYYY_MM') ||' ON scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||' (start_time)';

        EXECUTE 'UPDATE scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||' sc SET c_total_calls = sc.c_total_calls + ($1).c_total_calls WHERE (sc.c_prefix_id = ($1).c_prefix_id AND sc.v_prefix_id = ($1).v_prefix_id AND sc.start_time = ($1).start_time)'
        USING NEW;
        EXECUTE 'INSERT INTO scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||'(customer_name, ...) Select ($1).* 
     WHERE NOT EXISTS (SELECT * FROM scdr_buz_'|| to_char(NEW.start_time, 'YYYY_MM') ||' WHERE (...))'
        USING NEW;
        RETURN NULL;
END
$$
LANGUAGE plpgsql;


CREATE TRIGGER fk_checkTrigger_buz_scdr
BEFORE INSERT ON scdr_buz
FOR EACH ROW
EXECUTE PROCEDURE tbl_scdr_buz_insert_trigger();
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1 回答 1

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它可能会增加 1，但请记住，对任何分区的每次插入都会增加 1。另请注意，回滚不会回滚序列。

于 2013-03-22T06:52:24.260 回答