大约有 3,549 项符合查询结果(耗时:0.0172秒) [XML]
How to write UPDATE SQL with Table alias in SQL Server 2008?
I have a very basic UPDATE SQL -
2 Answers
2
...
Is the SQL WHERE clause short-circuit evaluated?
Are boolean expressions in SQL WHERE clauses short-circuit evaluated
?
14 Answers
1...
Difference between View and table in sql
What is the main difference between view and table in SQL. Is there any advantage of using views instead of tables.
7 Answe...
SQL Server dynamic PIVOT query?
...
Dynamic SQL PIVOT:
create table temp
(
date datetime,
category varchar(3),
amount money
)
insert into temp values ('1/1/2012', 'ABC', 1000.00)
insert into temp values ('2/1/2012', 'DEF', 500.00)
insert into temp values ...
SQL Joins Vs SQL Subqueries (Performance)?
... and an explicit JOIN. In my experience IN is a very slow operator, since SQL normally evaluates it as a series of WHERE clauses separated by "OR" (WHERE x=Y OR x=Z OR...).
As with ALL THINGS SQL though, your mileage may vary. The speed will depend a lot on indexes (do you have indexes on both I...
SQL - Query to get server's IP address
Is there a query in SQL Server 2005 I can use to get the server's IP or name?
10 Answers
...
How do I view the SQL generated by the Entity Framework?
How do I view the SQL generated by entity framework ?
22 Answers
22
...
Search for one value in any column of any table inside a database
...a UID of the type char(64) ) inside any column of any table inside one MS SQL Server database?
7 Answers
...
SQL left join vs multiple tables on FROM line?
Most SQL dialects accept both the following queries:
11 Answers
11
...
Is there any difference between “!=” and “” in Oracle Sql?
...r all other DBMS - most of them support both styles):
Here is the current SQL reference: https://docs.oracle.com/database/121/SQLRF/conditions002.htm#CJAGAABC
The SQL standard only defines a single operator for "not equals" and that is <>
...