[sqlite] Is rowid the fastest?

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[sqlite] Is rowid the fastest?

14. Dezember 2015 13:54 >An: sqlite-users at mailinglists.sqlite.org >Betreff: [sqlite] Is rowid the fastest? > >hi, > create a table using the following sql. > CREATE TABLE t(x INTEGER PRIMARY KEY ASC, y, z); > So the x is the alias of the rowid. Retrieving records by rowid aroun

[sqlite] Is rowid the fastest?

hi, create a table using the following sql. CREATE TABLE t(x INTEGER PRIMARY KEY ASC, y, z); So the x is the alias of the rowid. Retrieving records by rowid around twice as fast as other indexs values. Because of the x is the alias of rowid, so retrieving records by x is also as

[sqlite] Is rowid the fastest?

??? wrote: > CREATE TABLE t(x INTEGER PRIMARY KEY ASC, y, z); > > In order to testing the efficiency. After I create index on t(x). > And this give me a suprise, now I retrieve by x , I found that its is > faster than its before. An index entry is smaller than a table row, so if you

[sqlite] Is rowid the fastest?

An: SQLite mailing list Betreff: [sqlite] Is rowid the fastest? You said that "You are probably falling into the cache effect trap again. There is no point in indexing on the primary key, it only wastes space and CPU cycles ". I do not agree with you. let me tell you why. Before I ret

[sqlite] Is rowid the fastest?

Auftrag von ??? Gesendet: Montag, 14. Dezember 2015 13:54 An: sqlite-users at mailinglists.sqlite.org Betreff: [sqlite] Is rowid the fastest? hi, create a table using the following sql. CREATE TABLE t(x INTEGER PRIMARY KEY ASC, y, z); So the x is the alias of the rowid. Retrieving records