[sqlite] Why SQLite take lower performanceinmulti-threadSELECTing?

@sanhua> If you can, just for testing, use the SQLite backup mechanism to copy the database to memory, then run your transactions off the memory version. This will get rid of disk IO with the exclusion of the OS swapping to memory. This will tell you if you're running into some kind of thread loc

[sqlite] FTS5 explicitly set delimiter

On 11/01/2015 06:39 PM, chromedout64 at yahoo.com wrote: > Is there an easy way to set an FTS5 table so that the only > delimiter/separator is a space and everything else, including all > punctuation, is a token? Some searching revealed that there is an > undocumented feature as a part of FTS3

[sqlite] FTS5 explicitly set delimiter

Thanks, I figured that this might be the case. What is the best way to specify all characters except whitespace as part of a CREATE VIRTUAL TABLE statement? Should you simply list each of the literal ascii characters such as tokenchars '!@#$%' and so on. Or is it possible or would it be better t

[sqlite] factbook.sql World Factbook Country Profiles in SQL (Incl. factbook.db - Single-File SQLite Distro)

Hello, I've started a new project, that is, /factbook.sql [1] that offers an SQL schema for the World Factbook and also includes a pre-built single-file SQLite database, that is, factbook.db [2] for download. What's the World Factbook? The World Factbook [3] published by the Central Intell

[sqlite] two memory leaks in shell

These were found by valgrind and verified by hand. I do not think they are serious. I'm sorry for not including line numbers, but I doubt they would be the same as in your actual source files anyway. 1. string returned from find_home_dir() not freed in process_sqliterc(). The find_home_dir() func

[sqlite] FTS5 explicitly set delimiter

Is there an easy way to set an FTS5 table so that the only delimiter/separator is a space and everything else, including all punctuation,?is a token? Some searching revealed that there is an undocumented?feature as a part of FTS3/4 that allows the actual delimiter to be specified as part of tab

[sqlite] The problem of inserting data too slow with index

On 10/30/15, aa wrote: >But recently I meet a problem about inserting data into table.It is > too slow whit index. >The first I create a table like this: > CREATE TABLE mac_tb (mac BIGINT PRIMARY KEY? > If I insert into mac_tb with mac ordey by num desc or asc , th