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Overview
Comment:Small optimization in FK handling.
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SHA1: e0d25913b73a813f5987aa70b364b00f19351663
User & Date: mistachkin 2016-02-25 21:38:28.541
Context
2016-02-25
23:21
Fix an incorrect cost computation for sorting (introduced just a few check-ins ago). Should be NlogN, not NloglogN. (check-in: 2459d32388 user: drh tags: trunk)
21:38
Small optimization in FK handling. (check-in: e0d25913b7 user: mistachkin tags: trunk)
21:27
Change the srcck1.c utility program to use only unsigned characters. (check-in: d64d005eb5 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/fkey.c.
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){
  sqlite3 *db = pParse->db;       /* Database handle */
  int action;                     /* One of OE_None, OE_Cascade etc. */
  Trigger *pTrigger;              /* Trigger definition to return */
  int iAction = (pChanges!=0);    /* 1 for UPDATE, 0 for DELETE */

  action = pFKey->aAction[iAction];
  pTrigger = pFKey->apTrigger[iAction];
  if( (db->flags & SQLITE_DeferFKs) && action==OE_Restrict ){
    return 0;
  }



  if( action!=OE_None && !pTrigger ){
    char const *zFrom;            /* Name of child table */
    int nFrom;                    /* Length in bytes of zFrom */
    Index *pIdx = 0;              /* Parent key index for this FK */
    int *aiCol = 0;               /* child table cols -> parent key cols */
    TriggerStep *pStep = 0;        /* First (only) step of trigger program */








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){
  sqlite3 *db = pParse->db;       /* Database handle */
  int action;                     /* One of OE_None, OE_Cascade etc. */
  Trigger *pTrigger;              /* Trigger definition to return */
  int iAction = (pChanges!=0);    /* 1 for UPDATE, 0 for DELETE */

  action = pFKey->aAction[iAction];

  if( action==OE_Restrict && (db->flags & SQLITE_DeferFKs) ){
    return 0;
  }

  pTrigger = pFKey->apTrigger[iAction];

  if( action!=OE_None && !pTrigger ){
    char const *zFrom;            /* Name of child table */
    int nFrom;                    /* Length in bytes of zFrom */
    Index *pIdx = 0;              /* Parent key index for this FK */
    int *aiCol = 0;               /* child table cols -> parent key cols */
    TriggerStep *pStep = 0;        /* First (only) step of trigger program */
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