里面我用子查询的CASE声明,并在子查询我们希望与自动序列值或计数器值一起一列。例如 CASE声明里面查询就是这样的,我们通过一列col1在WHERE的条件下&得到输出col2以及CNT。 (CASE WHEN (SELECT COL2, ROWNUM AS CNT FROM TAB1 WHERE COL1 = COL1) THEN ....)
每当任何值col1将匹配,则col2的输出将被与
假设我有一个包含用户输入参数的过程。 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
有没有办法在SQL语句中遍历“IN”子句而无需实现某种循环? 我的例子是: SELECT *
FROM store_table
WHERE store_a IN (1,2,3,4,5,6,7,8,9,10);
而不必列出所有的门店中,有没有办法列出写某种代码,它看起来就像这样: SELECT *
FROM store_table
WHERE store_a IN (1,2,...10)
我想要计算具有特定SKU的商店(商店1-10)的不同数量。这里是我的代码: 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
我有一个SQL Server数据库的查询获取存储这样的程序参数: SELECT
parameter.name,
types.name,
types.is_nullable
FROM
sys.parameters AS parameter
INNER JOIN
sys.procedures AS procedures ON parameter.o