Read or memory-map a variable or kdb+ data file

get x     get[x]

Where x is

• the name of a global variable as a symbol atom
• a file or folder named as a symbol atom or vector

returns its value.

Signals a type error if the file is not a kdb+ data file.

Used to map columns of databases in and out of memory when querying splayed databases, and can be used to read q log files, etc.

q)a:42
q)get `a
42

q)\l trade.q
q)`:NewTrade set trade                  / save trade data to file
`:NewTrade
q)t:get`:NewTrade                       / t is a copy of the table
q)`:SNewTrade/ set .Q.en[`:.;trade]     / save splayed table
`:SNewTrade/
q)s:get`:SNewTrade/                     / s has columns mapped on demand