裏面我用子查詢的CASE聲明,並在子查詢我們希望與自動序列值或計數器值一起一列。例如 CASE聲明裏面查詢就是這樣的,我們通過一列col1在WHERE的條件下&得到輸出col2以及CNT。 (CASE WHEN (SELECT COL2, ROWNUM AS CNT FROM TAB1 WHERE COL1 = COL1) THEN ....)
每當任何值col1將匹配,則col2的輸出將被與
假設我有一個包含用戶輸入參數的過程。 Create procedure Match_Record(v_match_ID)
Cursor match is
Select *
From table A
Where not exists(select ‘bbb’ from table B
Where a. v_match_ID = b. v_match_ID);
它
有沒有辦法在SQL語句中遍歷「IN」子句而無需實現某種循環? 我的例子是: SELECT *
FROM store_table
WHERE store_a IN (1,2,3,4,5,6,7,8,9,10);
而不必列出所有的門店中,有沒有辦法列出寫某種代碼,它看起來就像這樣: SELECT *
FROM store_table
WHERE store_a IN (1,2,...10)
我想要計算具有特定SKU的商店(商店1-10)的不同數量。這裏是我的代碼: SELECT distinct COUNT(*) as total_store
FROM(
select distinct st.*
from (select st.*
from store_table st
)st
WHERE st.store between 1 and 10
create or replace trigger BAND_T BEFORE insert or update OF average_song_time, number_of_songs on BAND
for each row
declare
average_song_time number;
number_of_songs number;
begin
if
我有一個SQL Server數據庫的查詢獲取存儲這樣的程序參數: SELECT
parameter.name,
types.name,
types.is_nullable
FROM
sys.parameters AS parameter
INNER JOIN
sys.procedures AS procedures ON parameter.o