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Although not in standard, most DBMS allows using a select clause without a table by pretending that an imaginary table with one row is used. This is mainly used to perform calculations where a table is not needed. The SELECT clause specifies a list of properties (columns) by name, or the wildcard character (“*”) to mean “all properties”.
Microsoft Access: A table named DUAL may be created and the single-row constraint enforced via ADO (Table-less UNION query in MS Access) Microsoft SQL Server: SQL Server does not require a dummy table. Queries like 'select 1 + 1' can be run without a "from" clause/table name. [5] MySQL allows DUAL to be specified as a table in queries that do ...
MySQL Workbench is the first MySQL family of products that offer two different editions - an open source and a proprietary edition. [31] The "Community Edition" is a full featured product that is not crippled in any way.
MySQL ships with many command line tools, from which the main interface is the mysql client. [125] [126] MySQL Utilities is a set of utilities designed to perform common maintenance and administrative tasks. Originally included as part of the MySQL Workbench, the utilities are a stand-alone download available from Oracle.
The following example of a SELECT query returns a list of expensive books. The query retrieves all rows from the Book table in which the price column contains a value greater than 100.00. The result is sorted in ascending order by title. The asterisk (*) in the select list indicates that all columns of the Book table should be included in the ...
Legend of TCP and UDP protocol table cells for port numbers Cell Description Yes Described protocol is assigned by IANA for this port, and is: standardized, specified, or widely used for such. Unofficial Described protocol is not assigned by IANA for this port, but is: standardized, specified, or widely used for such. Assigned
SMILES generation algorithm for ciprofloxacin: break cycles, then write as branches off a main backbone. The Simplified Molecular Input Line Entry System (SMILES) is a specification in the form of a line notation for describing the structure of chemical species using short ASCII strings.
Amiga Workbench 1.0 Workbench 1.3.2 and Extras floppy disks (German version) Workbench 1.0 was released with the first Amiga, the Amiga 1000 , in 1985. The 1.x versions of Workbench used a blue-and-orange color scheme, designed to give high contrast on even the worst of television screens (the colors can be changed by the user).