22 lines
1.1 KiB
SQL
22 lines
1.1 KiB
SQL
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-- Target only an explicitly authorized local/dev connection and baiyue_iam.
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-- Preserve existing customer rows and never reset an existing sequence backwards.
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USE baiyue_iam;
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CREATE TABLE IF NOT EXISTS iam_number_sequence (
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sequence_key VARCHAR(64) NOT NULL COMMENT '业务编号类型',
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next_value BIGINT UNSIGNED NOT NULL COMMENT '下一待分配数字',
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updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3) COMMENT '更新时间',
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PRIMARY KEY (sequence_key)
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) ENGINE=InnoDB COMMENT='IAM业务编号序列表';
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START TRANSACTION;
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INSERT IGNORE INTO iam_number_sequence(sequence_key, next_value) VALUES ('CUSTOMER_CODE', 1);
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SELECT next_value FROM iam_number_sequence WHERE sequence_key='CUSTOMER_CODE' FOR UPDATE;
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SET @customer_code_floor = (
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SELECT COALESCE(MAX(CAST(tenant_code AS UNSIGNED)), 0) + 1
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FROM iam_tenant WHERE tenant_code REGEXP '^[0-9]{5}$'
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);
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UPDATE iam_number_sequence SET next_value=GREATEST(next_value,@customer_code_floor)
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WHERE sequence_key='CUSTOMER_CODE';
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COMMIT;
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SHOW CREATE TABLE iam_number_sequence;
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SELECT sequence_key,next_value FROM iam_number_sequence;
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