Performance optimization in sqlite3ViewGetColumnNames().

FossilOrigin-Name: 390717e68800af9b71acd635cf6cb123f9a591276df511f11462b42960f9a70c

1 files changed, 6 insertions, 1 deletions

diff --git a/src/build.c b/src/build.c
index 4b27d5cf8..47aa8bc57 100644
--- a/src/build.c
+++ b/src/build.c
@@ -3042,7 +3042,7 @@ create_view_fail:
 ** the columns of the view in the pTable structure.  Return the number
 ** of errors.  If an error is seen leave an error message in pParse->zErrMsg.
 */
-int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){
+static SQLITE_NOINLINE int viewGetColumnNames(Parse *pParse, Table *pTable){
   Table *pSelTab;   /* A fake table from which we get the result set */
   Select *pSel;     /* Copy of the SELECT that implements the view */
   int nErr = 0;     /* Number of errors encountered */
@@ -3165,6 +3165,11 @@ int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){
 #endif /* SQLITE_OMIT_VIEW */
   return nErr;  
 }
+int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){
+  assert( pTable!=0 );
+  if( !IsVirtual(pTable) && pTable->nCol>0 ) return 0;
+  return viewGetColumnNames(pParse, pTable);
+}
 #endif /* !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) */
 
 #ifndef SQLITE_OMIT_VIEW