Showing entries 8121 to 8130 of 44045
« 10 Newer Entries | 10 Older Entries »
Example of unionAll in Query Builder Laravel

Sometimes you need to bind multimple query then you can use unionAll in laravel If you use union all then laravel query builder provide unionAll method for mysql union when you are doing big project or ERP level project then mostly you require to use union for getting data from database with multi

Laravel Join with Subquery in Query Builder Example

In this post i want to show you how to use subquery with join in laravel query builder Whenever you need to use subquery in your laravel project you can use following example and learn hot to use subquery In bellow example you can see we add subquery using DBraw DBraw throught we can sele

Example of unionAll in Query Builder Laravel 5

Sometimes you need to bind multimple query then you can use unionAll in laravel If you use union all then laravel query builder provide unionAll method for mysql union when you are doing big project or ERP level project then mostly you require to use union for getting data from database with multi

Log Buffer #463: A Carnival of the Vanities for DBAs

As the winter in the Northern hemisphere is giving way to spring, slowly but surely, blog posts are blooming in the gardens of Oracle, SQL Server and MySQL. This Log Buffer plucks some of them for your reading pleasure.

Oracle:

Providing A Persistent Data Volume to EMC XtremIO Using ClusterHQ Flocker, Docker And Marathon

There is sliced bread in SQL.

Oracle Cloud – Your service is suspended due to exceeding resource quota !

EM12c Compliance ‘Required Data Available’ flag – Understanding and Troubleshooting

[Read more]
In Brief #003: MySQL Backups On Forge

(Update: Forge auto-magically redirects cron job output to a job specific file, which means my cronjob below doesn't quite do what is expected. I've written a new post about how this affects this strategy because it made more sense than trying to correct/update this one.)

Shifting gears for a second, let’s chat about backups. I’m using Laravel Forge to run deployments on top of Linode servers. Both are ah-may-zing!

Now that I’ve got some data piling up in my MySQL databases, I thought it wise to start backing up my few machines. Linode has a terrific, no-frills backup service

[Read more]
Newly Updated “MySQL Load Balancing with HAProxy” Tutorial

We are glad to announce that one of our most popular tutorials has just been updated and is available here. In this tutorial, we cover how HAProxy works, and how to deploy, configure and manage HAProxy in conjunction with MySQL using ClusterControl.

Applications typically connect to a database cluster or replicated setup by opening connections on one of the database nodes in order to run transactions. If the database node fails, the client would need to reconnect to another database node before it can continue to serve requests. There are database drive that supports connection pooling, load balancing and failover e.g. Connector/J and PHP MySQL native driver for master slave. However, in other clustering setup like Galera Cluster for MySQL or MariaDB, the JDBC and PHP drivers are not aware of internal Galera state information, and …

[Read more]
How to scrolling table with fixed header in HTML

Sometimes you require to create scroll table and header must be fixed in your website or project You can do it easily I show you two example of scrolling table with fixed header and you can see and implement in your website Lets see first example strongExample 1strongpre classcode lan

Comment on How To Access MySQL from Oracle With ODBC and SQL by Michael D

Hello, I followed your instruction step by step; but I am getting the following error
select “col5” from “demo”@MySQL;
*
ERROR at line 1:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
ORA-02063: preceding line from MYSQL

My environment : Centos 7, Oracle xe 11.2.0,
I created a public database link;

[root@localhost trace]# isql -v demo
+—————————————+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+—————————————+
SQL>

Any help would be greatly appreciated.
Thank you

Comments in SQL Statements

First I will say what the comment syntax is for various vendors' dialects. Then I will get specific about some matters that specifically affect MySQL or MariaDB.

Syntax Table

Standard YES YES NO YES NO
Oracle 12c YES YES NO NO YES
DB2 YES YES NO
[Read more]
EXPLAIN FORMAT=JSON: nested_loop makes JOIN hierarchy transparent

Once again it’s time for another EXPLAIN FORMAT=JSON is cool! post. This post will discuss how EXPLAIN FORMAT=JSON allows the nested_loop command to make the JOIN operation hierarchy transparent.

The regular

EXPLAIN

  command lists each table that participates in a 

JOIN

  operation on a single row. This works perfectly for simple queries:

mysql> explain select * from employees join titles join salariesG
*************************** 1. row ***************************
           id: 1
  select_type: SIMPLE
        table: employees
   partitions: NULL
         type: ALL
possible_keys: NULL
          key: NULL
      key_len: …
[Read more]
Showing entries 8121 to 8130 of 44045
« 10 Newer Entries | 10 Older Entries »