On 3/22/17, Domingo Alvarez Duarte <mingo...@gmail.com> wrote: > Hello Richard ! > > I noticed that sqlite do not use any memoization in json1 functions. > > For example jsonExtractFunc and others parse the json string every time > it's called even when the json string is the same. > > minimal example : "select json_extract(json, '$.name') name, > json_extract(json, '$.address') name from some_table;" > > Could be possible to have some kind of memoization as a general option > for any sqlite functions ?'
In paragraph 3.0 of https://www.sqlite.org/json1.html: "All json1 functions currently throw an error if any of their arguments are BLOBs because BLOBs are reserved for a future enhancement in which BLOBs will store the binary encoding for JSON." But let me ask this: Have you actually measured a performance problem? Or are you just assuming that because the implementation parses the JSON anew each time it see it that it must therefore be inefficient? -- D. Richard Hipp d...@sqlite.org _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
