diff options
Diffstat (limited to 'src/sqliteInt.h')
| -rw-r--r-- | src/sqliteInt.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h index 9492da17a..a4a33cc93 100644 --- a/src/sqliteInt.h +++ b/src/sqliteInt.h @@ -2138,10 +2138,13 @@ struct KeyInfo { u16 nKeyField; /* Number of key columns in the index */ u16 nAllField; /* Total columns, including key plus others */ sqlite3 *db; /* The database connection */ - u8 *aSortOrder; /* Sort order for each column. */ + u8 *aSortFlags; /* Sort order for each column. */ CollSeq *aColl[1]; /* Collating sequence for each term of the key */ }; +#define KEYINFO_ORDER_DESC 0x01 +#define KEYINFO_ORDER_BIGNULL 0x02 + /* ** This object holds a record which has been parsed out into individual ** fields, for the purposes of doing a comparison. @@ -2603,11 +2606,12 @@ struct ExprList { Expr *pExpr; /* The parse tree for this expression */ char *zName; /* Token associated with this expression */ char *zSpan; /* Original text of the expression */ - u8 sortOrder; /* 1 for DESC or 0 for ASC */ + u8 sortFlags; /* Mask of KEYINFO_ORDER_* flags */ unsigned done :1; /* A flag to indicate when processing is finished */ unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */ unsigned reusable :1; /* Constant expression is reusable */ unsigned bSorterRef :1; /* Defer evaluation until after sorting */ + unsigned bNulls: 1; /* True if explicit "NULLS FIRST/LAST" */ union { struct { u16 iOrderByCol; /* For ORDER BY, column number in result set */ @@ -3888,7 +3892,7 @@ void sqlite3ExprDelete(sqlite3*, Expr*); void sqlite3ExprUnmapAndDelete(Parse*, Expr*); ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*); ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*); -void sqlite3ExprListSetSortOrder(ExprList*,int); +void sqlite3ExprListSetSortOrder(ExprList*,int,int); void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int); void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*); void sqlite3ExprListDelete(sqlite3*, ExprList*); @@ -4365,6 +4369,7 @@ void sqlite3KeyInfoUnref(KeyInfo*); KeyInfo *sqlite3KeyInfoRef(KeyInfo*); KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*); KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int); +int sqlite3HasExplicitNulls(Parse*, ExprList*); #ifdef SQLITE_DEBUG int sqlite3KeyInfoIsWriteable(KeyInfo*); |