SELECT INSERT UPDATE DELETE CURSOR 用来操纵数据库中的数据的命令如
Tests 6 and 9 in Appendix a showed that loading from a cursor provided almost 20% improvement over the equivalent INSERT... SELECT statement.
附录A中的test 6和9表明,同等效的INSERT…select语句相比,从游标装载几乎可以提高20%的性能。
That is, it copies the character in the same column from the line immediately above the cursor. For example, a CTRL-Y in the following situation would insert an "m" at the cursor.
也就是说,它将从紧挨着游标的上一行中复制同一列中的字符。
Set the cursor on a new line, select Insert -> Link.
将光标定位在新的一行上,并选择 Insert -> Link。
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