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How do I use a custom Serializer with Jackson?
...er should be something like this:
import java.io.IOException;
import java.sql.Timestamp;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.Serialize...
Hibernate: Automatically creating/updating the db tables based on entity classes
...ve.autodetection" value="class"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hbm2ddl.auto" value="create-drop"/>
<!-- without below table was not created -->
<property name=...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
...
//Create a query and fill the data table with the data from the DB
string sql = "SELECT Whatever FROM MyDBTable;";
OleDbCommand cmd = new OleDbCommand(sql, con);
OleDbDataAdapter adptr = new OleDbDataAdapter();
adptr.SelectCommand = cmd;
adptr.Fill(dt);
con.Close();
//Add the table to the data se...
How to find a table having a specific column in postgresql
I'm using PostgreSQL 9.1. I have the column name of a table. Is it possible to find the table(s) that has/have this column? If so, how?
...
How to add “on delete cascade” constraints?
In PostgreSQL 8 is it possible to add ON DELETE CASCADES to the both foreign keys in the following table without dropping the latter?
...
What's the difference between JPA and Hibernate? [closed]
...P (Java Community Process)
Hibernate (in 2003) provided a way to abstract SQL and allow developers to think more in terms of persisting objects (ORM). You notify hibernate about your Entity objects and it automatically generates the strategy to persist them. Hibernate provided an implementation to ...
mysql :: insert into table, data from another table?
I was wondering if there is a way to do this purely in sql:
5 Answers
5
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Does Dispose still get called when exception is thrown inside of a using statement?
...an exception inside IDisposable.Dispose
What is the proper way to ensure a SQL connection is closed when an exception is thrown?
C# "Using" Syntax
C# USING keyword - when and when not to use it?
'using' statement vs 'try finally'
What is the C# Using block and why should I use it?
Disposable Using P...
PostgreSQL: Difference between text and varchar (character varying)
...atabase they could use constraints. See blog.jonanin.com/2013/11/20/postgresql-char-varchar which includes "an example of using TEXT and constraints to create fields with more flexibility than VARCHAR".
– Ethan
Dec 14 '15 at 13:03
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SQLite UPSERT / UPDATE OR INSERT
I need to perform UPSERT / INSERT OR UPDATE against a SQLite Database.
7 Answers
7
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