登錄到sqlplus爲什麼它總是在linux中打印用戶名? $ 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
我有一個查詢,我想寫出: select busnumber from bus where busnumber in
(select frombusnumber, tobusnumber from transformer where transformernumber = 1 or transformernumber = 1);
然而,「選擇frombusnumber,從變壓器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)
實際上我正在尋找一個sql語句,它刪除我的重複記錄直到刪除0行。 下面的sql語句已經刪除重複的記錄,但我必須執行它幾次,直到刪除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
如果我想從表中刪除photo列的BLOB數據A 我的表,大約由200萬行,因此變得費時執行UPDATE聲明。 我的方法: CREATE DIRECTORY EXT_DIR as '/tmp/TEST/';
CR