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Rename SQLITE_FUNC_VARYING to SQLITE_FUNC_SLOCHNG - a more descriptive name

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for what that bit means.

FossilOrigin-Name: ff5137a6dd8cb2a9b629b3a244f52665e9c9ebce
This commit is contained in:
drh
2015-09-01 13:17:17 +00:00
parent 7d3d9daea2
commit a7f910b549
4 changed files with 18 additions and 16 deletions
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7
src/resolve.c
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@@ -729,15 +729,16 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
return WRC_Prune;
}
#endif
if( pDef->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_VARYING) ){
if( pDef->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG) ){
/* For the purposes of the EP_ConstFunc flag, date and time
** functions and other functions that change slowly are considered
** constant because they are constant for the duration of one query */
ExprSetProperty(pExpr,EP_ConstFunc);
}
if( (pDef->funcFlags & SQLITE_FUNC_CONSTANT)==0 ){
/* DATETIME functions are considered non-deterministic because of
** the 'now' capability */
/* Date/time functions that use 'now', and other functions like
** sqlite_version() that might change over time cannot be used
** in an index. */
notValid(pParse, pNC, "non-deterministic functions", NC_IdxExpr);
}
}