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Recover a some of the performance lost by window function alias fix two

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check-ins back.

FossilOrigin-Name: 965cbcea117835d2c6d2ec58c8025b227f491c35805e282cb31228436bc6bec1
This commit is contained in:
drh
2019-03-29 01:15:11 +00:00
parent f72a97925d
commit d137f4e6e5
4 changed files with 23 additions and 19 deletions
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15
src/sqliteInt.h
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@@ -2496,12 +2496,16 @@ struct Expr {
/*
** The following are the meanings of bits in the Expr.flags field.
** Value restrictions:
**
** EP_Agg == NC_HasAgg == SF_HasAgg
** EP_Win == NC_HasWin
*/
#define EP_FromJoin 0x000001 /* Originates in ON/USING clause of outer join */
#define EP_Agg 0x000002 /* Contains one or more aggregate functions */
#define EP_Distinct 0x000002 /* Aggregate function with DISTINCT keyword */
#define EP_HasFunc 0x000004 /* Contains one or more functions of any kind */
#define EP_FixedCol 0x000008 /* TK_Column with a known fixed value */
#define EP_Distinct 0x000010 /* Aggregate function with DISTINCT keyword */
#define EP_Agg 0x000010 /* Contains one or more aggregate functions */
#define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */
#define EP_DblQuoted 0x000040 /* token.z was originally in "..." */
#define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */
@@ -2512,7 +2516,7 @@ struct Expr {
#define EP_Skip 0x001000 /* COLLATE, AS, or UNLIKELY */
#define EP_Reduced 0x002000 /* Expr struct EXPR_REDUCEDSIZE bytes only */
#define EP_TokenOnly 0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */
#define EP_Static 0x008000 /* Held in memory not obtained from malloc() */
#define EP_Win 0x008000 /* Contains window functions */
#define EP_MemToken 0x010000 /* Need to sqlite3DbFree() Expr.zToken */
#define EP_NoReduce 0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
#define EP_Unlikely 0x040000 /* unlikely() or likelihood() function */
@@ -2524,7 +2528,7 @@ struct Expr {
#define EP_WinFunc 0x1000000 /* TK_FUNCTION with Expr.y.pWin set */
#define EP_Subrtn 0x2000000 /* Uses Expr.y.sub. TK_IN, _SELECT, or _EXISTS */
#define EP_Quoted 0x4000000 /* TK_ID was originally quoted */
#define EP_Win 0x8000000 /* Contains window functions */
#define EP_Static 0x8000000 /* Held in memory not obtained from malloc() */
/*
** The EP_Propagate mask is a set of properties that automatically propagate
@@ -2764,8 +2768,9 @@ struct NameContext {
** Allowed values for the NameContext, ncFlags field.
**
** Value constraints (all checked via assert()):
** NC_HasAgg == SF_HasAgg
** NC_HasAgg == SF_HasAgg == EP_Agg
** NC_MinMaxAgg == SF_MinMaxAgg == SQLITE_FUNC_MINMAX
** NC_HasWin == EP_Win
**
*/
#define NC_AllowAgg 0x0001 /* Aggregate functions are allowed here */