登录到sqlplus为什么它总是在linux中打印用户名? $ sqlplus
SQL*Plus: Release 11.2.0.4.0 Production on Fri Apr 7 06:32:57 2017
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Enter user-name: scott
Enter p
我有一个查询,我想写出: select busnumber from bus where busnumber in
(select frombusnumber, tobusnumber from transformer where transformernumber = 1 or transformernumber = 1);
然而,“选择frombusnumber,从变压器tobusnum
select (select SUM(t.fees_amount)from unit u, payment p, type_of_fees t WHERE u.unit_id = p.unit_id AND p.stof = t.stof AND u.unit_id LIKE '%U1001%'
AND p.stat = 'not payed') "BLOCK 1(Not Payed)
实际上我正在寻找一个sql语句,它删除我的重复记录直到删除0行。 下面的sql语句已经删除重复的记录,但我必须执行它几次,直到删除0行。 delete from results_table where rowid in
(select min(rowID) from results_table
group by u_name||u_date
having
例子: 表-A id | not null | number(10)
name | not null | varchar(50)
photo | not null | blob
如果我想从表中删除photo列的BLOB数据A 我的表,大约由200万行,因此变得费时执行UPDATE声明。 我的方法: CREATE DIRECTORY EXT_DIR as '/tmp/TEST/';
CR