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Avoid storing redundant fields in sorter records when the sort-key and data have

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fields in common (as in "SELECT a FROM t1 ORDER BY 1").

FossilOrigin-Name: 0af62fdbd8e2aab14718ff8bcb5934f05463c176
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dan
2016-11-10 20:14:06 +00:00
parent 58282f68d8
commit 257c13fa00
5 changed files with 54 additions and 21 deletions
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src/sqliteInt.h
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@@ -3706,6 +3706,7 @@ int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8);
#define SQLITE_ECEL_DUP 0x01 /* Deep, not shallow copies */
#define SQLITE_ECEL_FACTOR 0x02 /* Factor out constant terms */
#define SQLITE_ECEL_REF 0x04 /* Use ExprList.u.x.iOrderByCol */
#define SQLITE_ECEL_OMITREF 0x08 /* Omit if ExprList.u.x.iOrderByCol */
void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
void sqlite3ExprIfFalseDup(Parse*, Expr*, int, int);