大约有 6,000 项符合查询结果（耗时：0.0160秒） [XML]
Fragment is not being replaced but put on top of the previous one
... your explanation. youtube.com/watch?v=EbcdMxAIr54
– SQL and Java Learner
Oct 17 '18 at 18:48
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The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
...question on stackoverflow dealing with how to insert a list of ids into an SQL statement.
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How to load json into my angular.js ng-model?
...s a list of Customer details, from an online copy of Microsoft's Northwind SQL Server database.
http://www.iNorthwind.com/Service1.svc/getAllCustomers
It returns some JSON data which looks like this:
{
"GetAllCustomersResult" :
[
{
"CompanyName": "Alfreds ...
Using LINQ to concatenate strings
...t takes a collection of values and returns a scalar value. Examples from T-SQL include min, max, and sum. Both VB and C# have support for aggregates. Both VB and C# support aggregates as extension methods. Using the dot-notation, one simply calls a method on an IEnumerable object.
Remember that agg...
How to load db:seed data into test database automatically?
...est:load is not executed if you have config.active_record.schema_format = :sql (db:test:clone_structure is)
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IsNothing versus Is Nothing
...d to use the Is Nothing version partially from using it as much as I do in SQL.
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Include constant in string without concatenating
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This is the one I use most, when I have a bunch of crazy SQL strings to compose. Also... passive-aggressive much? ;-)
– Beejor
Jun 5 '15 at 3:23
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Spring Data: “delete by” is supported?
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@Modifying annotation to the rescue. You will need to provide your custom SQL behaviour though.
public interface UserRepository extends JpaRepository<User, Long> {
@Modifying
@Query("delete from User u where u.firstName = ?1")
void deleteUsersByFirstName(String firstName);
}
Up...
Is there a JSON equivalent of XQuery/XPath?
...ipes. The jq FAQ has pointers to tutorials and the like.
jq is also like SQL in that it supports CRUD operations, though the jq processor never overwrites its input. jq can also handle streams of JSON entities.
Two other criteria you might wish to consider in assessing a JSON-oriented query langu...
Java JDBC - How to connect to Oracle using Service Name instead of SID
...give back and help others with a complete example. Here goes:
import java.sql.*;
public class MyDBConnect {
public static void main(String[] args) throws SQLException {
try {
String dbURL = "jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=whatE...