had a good way to edit the written SQL statements to re-query, now we can do this, see the following example://1. Create compiled queryNorthwindDataContext db =NewNorthwindDataContext ();varfn =Compiledquery.compile (northwinddatacontext DB2,stringCity) = fromCinchDB2. CustomerswhereC.city = = CitySelectc);//2. Query the city for the London consumer, represented by the Loncusts collection, which can be bound with the data controlvarloncusts = FN (db,"London");//3. Query the city for
CustomerID are within the set. That is in. You can also place the definition of an array in a LINQ to SQL statement. Like what:var q = (From O in Db. OrdersWhere (New string[] {"Arout", "Bolid", "Fissa"}). Contains (O.customerid)Select O). ToList ();The not contains is reversed:var q = (From O in Db. OrdersWhere! (New string[] {"Arout", "Bolid", "Fissa"}). Contains (O.customerid)Select O). ToList ();1. Contains an object:var order = (from O in db. Orderswhere O.orderid = = 10248Select O). First
View Details:
5. synchronous processing
GGSCI (gc2) 6>Start RORA_1
Sending START request to MANAGER...
REPLICAT RORA_1 starting
GGSCI (gc2) 7>Info all
Program Status Group Lag Time Since Chkpt
MANAGER RUNNING
Extract running EORA_1 00:00:00 00:00:05
Extract running PORA_1 00:00:00 00:00:03
Replicat running RORA_1 00:00:00 00:00:01
Verify that gc1 and gc2 have been synchronized as follows:
Gc1:
SQL>Select * from TCUSTMER;
CUST NAME CITY ST
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Http://docwiki.embarcadero.com/Libraries/Seattle/en/System.Threading.TTaskHttp://docwiki.embarcadero.com/Libraries/Seattle/en/System.Threading.TTaskStatusThe Parallel programming Library (PPL) provides a Ttask class to run one task or multiple tasks in Paral Lel. A Task is a unit of work you need to get done. The PPL does the association between the task and the thread that performs the task so can run seve
example uses Contain to find the customer who contains an order with OrderID 10248.2. contains multiple values:
string[] cities = new string[] { "Seattle", "London", "Vancouver", "Paris" };var q = db.Customers.Where(p=>cities.Contains(p.City)).ToList();
Statement Description: This example uses Contains to find customers in the cities of Seattle, London, Paris, or Vancouver.
To sum up, we illustrate the
anonymous arrays
@ Data_points = ([5, 12], [20,-3],
[2, 2], [13, 20]);
@ Y_gt_x = grep {$ _-> [0] Foreach $ xy (@ y_gt_x) {print "$ xy-> [0], $ xy-> [1] \ n "}
Output result:
5, 12
13, 20
Search for restaurants in a simple database
In this example, the database implementation method is not used in actual applications, but it shows that when you use the grep function, as long as you have enough memory, there is basically no limit on the complexity of BLOCK blocks.
# @ Dat
Gordonlhemton is a hacker and designer in Seattle. He spent several months researching and comparing 12 popular JavaScriptMVC frameworks, and summarized the advantages and disadvantages of each framework in his blog, the final result is that Emberjs won. This comparison is targeted
Gordon L. hemton is a hacker and designer in Seattle. He spent several months researching and comparing 12 popular JavaScript M
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: (titleofcourtesy serves as the row and city serves as the column)
Titleofcourtesy
Londoncity
Redmondcity
Seattlecity
Dr.
Mr.
12
Mrs.
2
Ms.
5
4
Before discussing this issue, let's first take a look at how to create a static cross table, that is, a fixed cross table with a fixed number of columns. In fact, this can be done with a simple SELECT query:
Select
. contains multiple values:
String [] cities = new string [] {"Seattle", "London", "Vancouver", "Paris"}; var q = dB. MERs. where (P => cities. contains (P. city )). tolist ();
Statement Description: This example uses contains to find customers in the cities of Seattle, London, Paris, or Vancouver.
To sum up, we illustrate the following statements:
Group by/havingGroup data; Delay
AnyUsed to determi
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1. join queries include the following types:
Inner join/Outer Join/full join/cross joinThe following describes the usage of these join statements.
2. About Data Tables
The premise of this discussion is based on the following two data tables●Northwind. Employees
Employeeid lastname firstname city country reportsto----------------------------------------------------------------------------------1 davolio Nancy Seattle USA 22 fuller Andrew Tacoma U
hundreds of Java technical references in the Java technology zone.
About the author Dennis sosnoski is the founder and Chief Consultant of sosnoski software solutions, Inc., a Java consulting firm in Seattle. He is an expert in J2EE, XML, and Web service support. He has more than 30 years of professional software development experience and has concentrated on the Java technology of the server in rec
Will update ------
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After a long period of collection, you can find these high-price keywords. Let friends who have a website or who want to be a station can refer to the reference. If you have any other posts, please let me know. Thank you.
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