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Import package.* vs import package.SpecificType [duplicate]
...me name in different packages.
For example:
java.lang.reflect.Array
java.sql.Array
So, if you import java.lang.reflect.* and java.sql.* you'll have a collision on the Array type, and have to fully qualify them in your code.
Importing specific classes instead will save you this hassle.
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MySql - Way to update portion of a string?
I'm looking for a way to update just a portion of a string via MySQL query.
4 Answers
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Location of my.cnf file on macOS
I'm trying to follow along this tutorial to enable remote access to MySQL. The problem is, where should my.cnf file be located? I'm using Mac OS X Lion.
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Database Design for Tagging
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Mark: This one looks good: simple-talk.com/sql/t-sql-programming/… It's probably a re-published version of the one I referred to.
– Troels Arvin
Oct 31 '10 at 13:34
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What is the yield keyword used for in C#?
... is a real-life example:
public IEnumerable<T> Read<T>(string sql, Func<IDataReader, T> make, params object[] parms)
{
using (var connection = CreateConnection())
{
using (var command = CreateCommand(CommandType.Text, sql, connection, parms))
{
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select into in mysql
I am a MSSQL user and now I am converting my database to MySQL. I am writing the following query in MySQL:
2 Answers
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Can we use join for two different database tables?
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SQL Server allows you to join tables from different databases as long as those databases are on the same server. The join syntax is the same; the only difference is that you must fully specify table names.
Let's suppose you ...
Do I need elements in persistence.xml?
...hbm2ddl.auto" value="validate" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
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find vs find_by vs where
...ROM "kits" WHERE
("kits"."number" = '3456' AND "kits"."id" != 1) LIMIT 1 SQL (0.5ms)
UPDATE "kits" SET "job_id" = $1, "updated_at" = $2 WHERE "kits"."id" =
1 [["job_id", 2], ["updated_at", Tue, 12 May 2015 07:16:58 UTC +00:00]]
(0.6ms) COMMIT => true
but if you use where then you can ...
Can I bind an array to an IN() condition?
...in a table, and it is still not implemented yet - see this record in the MYSQL bug tracker. Thanks to @BillKarwin for the notice.
You can't use a string with comma inside as a value of the array for search. It is impossible to parse such string in the right way after implode since you use comma symb...