如何将table1中的数据插入table2？

Question

表table1已有500,000行。我想从table2只向table1插入200,000个，我该怎么做？

Answer 1

INSERT
INTO    table2
SELECT  *
FROM    table1
ORDER BY
        id -- or whatever
LIMIT 200000

Answer 2

INSERT INTO table2
SELECT **TOP 200000** * FROM table1 ORDER BY *<primary key>*