Search results
Results From The WOW.Com Content Network
CUBRID supports MERGE INTO [10] statement. And supports the use of INSERT... ON DUPLICATE KEY UPDATE syntax. [11] It also supports REPLACE INTO for compatibility with MySQL. [12] Apache Phoenix supports UPSERT VALUES [13] and UPSERT SELECT [14] syntax. Spark SQL supports UPDATE SET * and INSERT * clauses in actions. [15] Apache Impala supports ...
The sort-merge join (also known as merge join) is a join algorithm and is used in the implementation of a relational database management system. The basic problem of a join algorithm is to find, for each distinct value of the join attribute, the set of tuples in each relation which display that value. The key idea of the sort-merge algorithm is ...
A surrogate key is frequently a sequential number (e.g. a Sybase or SQL Server "identity column", a PostgreSQL or Informix serial, an Oracle or SQL Server SEQUENCE or a column defined with AUTO_INCREMENT in MySQL). Some databases provide UUID/GUID as a possible data type for surrogate keys (e.g. PostgreSQL UUID [3] or SQL Server ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
HCL Notes (formerly Lotus Notes then IBM Notes [2] [3]) is a proprietary collaborative software platform for Unix (), IBM i, Windows, Linux, and macOS, sold by HCLTech. [4] The client application is called Notes while the server component is branded HCL Domino.
A bulleted list can be placed into a reference using the standard syntax with asterisks (*) without any template. For a more streamlined look without bullets that complies with the accessibility guidelines, use template {} or {}. Dont use the HTML line break tag (<br>) as this will create problems for screen readers.
Duplicate images – tool to show duplicate files between Wikipedia and Commons (at the toolserver) Push-for-commons – tool to show a set of images from a wikipedia, helping to find license problems, {} candidates, and images that should be copied/moved to the commons (at the toolserver) RSS feeds: