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The Index object now has nKeyCol and nColumn. nColumn is the total number

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of columns and nKeyCol is the number of key columns.  Currently these always
differ by one.  Refactor aiColumn[] to be of type i16 instead of int.

FossilOrigin-Name: a106ce86cd4afd1f81603826de77df1fb25e9ab5
This commit is contained in:
drh
2013-10-22 18:01:40 +00:00
parent 77e57dfbc8
commit bbbdc83b52
14 changed files with 128 additions and 124 deletions
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8
src/fkey.c
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@@ -225,7 +225,7 @@ int sqlite3FkLocateIndex(
}
for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){
if( pIdx->nColumn==nCol && pIdx->onError!=OE_None ){
if( pIdx->nKeyCol==nCol && pIdx->onError!=OE_None ){
/* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number
** of columns. If each indexed column corresponds to a foreign key
** column of pFKey, then this index is a winner. */
@@ -248,7 +248,7 @@ int sqlite3FkLocateIndex(
** the default collation sequences for each column. */
int i, j;
for(i=0; i<nCol; i++){
int iCol = pIdx->aiColumn[i]; /* Index of column in parent tbl */
i16 iCol = pIdx->aiColumn[i]; /* Index of column in parent tbl */
char *zDfltColl; /* Def. collation for column */
char *zIdxCol; /* Name of indexed column */
@@ -509,7 +509,7 @@ static void fkScanChildren(
Expr *pLeft; /* Value from parent table row */
Expr *pRight; /* Column ref to child table */
Expr *pEq; /* Expression (pLeft = pRight) */
int iCol; /* Index of column in child table */
i16 iCol; /* Index of column in child table */
const char *zCol; /* Name of column in child table */
pLeft = sqlite3Expr(db, TK_REGISTER, 0);
@@ -966,7 +966,7 @@ u32 sqlite3FkOldmask(
Index *pIdx = 0;
sqlite3FkLocateIndex(pParse, pTab, p, &pIdx, 0);
if( pIdx ){
for(i=0; i<pIdx->nColumn; i++) mask |= COLUMN_MASK(pIdx->aiColumn[i]);
for(i=0; i<pIdx->nKeyCol; i++) mask |= COLUMN_MASK(pIdx->aiColumn[i]);
}
}
}