我在下面使用此查询示例插入第1行--3000 ++行:
INSERT INTO _tb_email_kirul SELECT * FROM tb_email_1708 WHERE card_no = '4890-8700-5889-4693';
INSERT INTO _tb_email_kirul SELECT * FROM tb_email_1708 WHERE card_no = '4890-8700-5712-0546';
INSERT INTO _tb_email_kirul SELECT * FROM tb_email_1708 WHERE card_no = '4890-8700-5566-8710';
INSERT INTO _tb_email_kirul SELECT * FROM tb_email_1708 WHERE card_no = '4890-8700-5262-5382';
INSERT INTO _tb_email_kirul SELECT * FROM tb_email_1708 WHERE card_no = '4890-8700-5879-5643';
INSERT INTO _tb_email_kirul SELECT * FROM tb_email_1708 WHERE card_no = '4890-8700-5247-8618';
+++++
我已尝试从1 - 3000 ++插入数据,需要1小时才能完成。
此查询可以采用单个查询还是比查询更快?
感谢。
答案 0 :(得分:0)
使用IN
组合查询。
INSERT INTO _tb_email_kirul
SELECT * FROM tb_email_1708
WHERE card_no IN ('4890-8700-5889-4693', '4890-8700-5712-0546',... )