Differences From Artifact [d6c61b808f]:

• File src/update.c — part of check-in [61ca4141cc] at 2010-08-18 17:27:25 on branch trunk — Allow a checkout of the very first (empty) version of a project. (user: drh size: 13971)

To Artifact [02a15151cd]:

• File src/update.c — part of check-in [4980b9a796] at 2010-09-09 13:57:50 on branch trunk — Allow checkout of versions that have neither ancestors nor children. (user: drh size: 13897) [more...]

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#include "update.h"
#include <assert.h>

/*
** Return true if artifact rid is a version
*/
int is_a_version(int rid){
  return db_exists("SELECT 1 FROM plink WHERE cid=%d "
  return db_exists("SELECT 1 FROM event WHERE objid=%d AND type='ci'", rid);
                   "UNION ALL SELECT 1 FROM plink WHERE pid=%d",
                    rid, rid);
}

/*
** COMMAND: update
**
** Usage: %fossil update ?VERSION? ?FILES...?
**