大约有 40,000 项符合查询结果（耗时：0.0404秒） [XML]
What is the equivalent of 'describe table' in SQL Server?
...
You can use the sp_columns stored procedure:
exec sp_columns MyTable
share
|
improve this answer
|
follow
|
...
Generate class from database table
How can I generate a class from a SQL Server table object?
26 Answers
26
...
Avoid duplicates in INSERT INTO SELECT query in SQL Server
I have the following two tables:
8 Answers
8
...
Select random row from a sqlite table
I have a sqlite table with the following schema:
7 Answers
7
...
Can you create nested WITH clauses for Common Table Expressions?
...
While not strictly nested, you can use common table expressions to reuse previous queries in subsequent ones.
To do this, the form of the statement you are looking for would be
WITH x AS
(
SELECT * FROM MyTable
),
y AS
(
SELECT * FROM x
)
SELECT * FROM y
...
PHP: exceptions vs errors?
... ul.code li.line {
color : red;
}
table.trace {
width : 100%;
border-collapse : collapse;
border : solid 1px black;
}
table.thead tr {
background : rgb(240,240,240);
...
Storing time-series data, relational or non?
... clause, it is very fast, and the query does not depend on the size of the table (grabbing 1,000 rows from a 16 billion row table is instantaneous).
Your table has one serious impediment. Given your description, the actual PK is (Device, Metric, DateTime). (Please don't call it TimeStamp, that mea...
SQL WHERE.. IN clause multiple columns
...
You can make a derived table from the subquery, and join table1 to this derived table:
select * from table1 LEFT JOIN
(
Select CM_PLAN_ID, Individual_ID
From CRM_VCM_CURRENT_LEAD_STATUS
Where Lead_Key = :_Lead_Key
) table2
ON
table1....
How do I see what character set a MySQL database / table / column is?
... FROM information_schema.SCHEMATA
WHERE schema_name = "schemaname";
For Tables:
SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
WHERE CCSA.collation_name = T.table_collation
AND T.table_schema = "schemana...
Does order of where clauses matter in SQL?
Let's say I have a table called PEOPLE having 3 columns ID, LastName, FirstName , none of these columns are indexed.
LastName is more unique, and FirstName is less unique.
...