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Another example is the single space that separates a command from the arguments of that command (called ’’cs’’ in the formal MUMPS standard). If the argument is empty, the command is considered to be "argumentless" since the space separating the command from its argument is immediately followed by the space(s) separating this command ...
Block fetch implies that multiple rows are sent together from the server to the client. The client stores a whole block of rows in a local buffer and retrieves the rows from there until that buffer is exhausted.
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 ...
The OFFSET clause specifies the number of rows to skip before starting to return data. The FETCH FIRST clause specifies the number of rows to return. Some SQL databases instead have non-standard alternatives, e.g. LIMIT, TOP or ROWNUM. The clauses of a query have a particular order of execution, [5] which is denoted by the number on the right ...
This prevents records from being overwritten incorrectly, but allows only one record to be processed at a time, locking out other users who need to edit records at the same time. To allow several users to edit a database table at the same time and also prevent inconsistencies created by unrestricted access, a single record can be locked when ...
A command-line interface is a means of interacting with a computer program where the user issues commands to the program by typing in successive lines of text (command lines). MySQL ships with many command line tools, from which the main interface is the mysql client. [123] [124]
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The command-line interface is the main, and most powerful, user interface for a VOS system. Users may be locked into "form" based sub-system by command macro scripts [11] if required, although a skilled user would be able to break out of this and get command-line access. (It is, in fact, possible for a Stratus system administrator to set up a ...