diff options
Diffstat (limited to 'chromium/third_party/sqlite/patched/src/whereInt.h')
| -rw-r--r-- | chromium/third_party/sqlite/patched/src/whereInt.h | 55 |
1 files changed, 36 insertions, 19 deletions
diff --git a/chromium/third_party/sqlite/patched/src/whereInt.h b/chromium/third_party/sqlite/patched/src/whereInt.h index 1bfbe08bf23..63a48b569c9 100644 --- a/chromium/third_party/sqlite/patched/src/whereInt.h +++ b/chromium/third_party/sqlite/patched/src/whereInt.h @@ -274,24 +274,23 @@ struct WhereTerm { /* ** Allowed values of WhereTerm.wtFlags */ -#define TERM_DYNAMIC 0x01 /* Need to call sqlite3ExprDelete(db, pExpr) */ -#define TERM_VIRTUAL 0x02 /* Added by the optimizer. Do not code */ -#define TERM_CODED 0x04 /* This term is already coded */ -#define TERM_COPIED 0x08 /* Has a child */ -#define TERM_ORINFO 0x10 /* Need to free the WhereTerm.u.pOrInfo object */ -#define TERM_ANDINFO 0x20 /* Need to free the WhereTerm.u.pAndInfo obj */ -#define TERM_OR_OK 0x40 /* Used during OR-clause processing */ +#define TERM_DYNAMIC 0x0001 /* Need to call sqlite3ExprDelete(db, pExpr) */ +#define TERM_VIRTUAL 0x0002 /* Added by the optimizer. Do not code */ +#define TERM_CODED 0x0004 /* This term is already coded */ +#define TERM_COPIED 0x0008 /* Has a child */ +#define TERM_ORINFO 0x0010 /* Need to free the WhereTerm.u.pOrInfo object */ +#define TERM_ANDINFO 0x0020 /* Need to free the WhereTerm.u.pAndInfo obj */ +#define TERM_OR_OK 0x0040 /* Used during OR-clause processing */ #ifdef SQLITE_ENABLE_STAT4 -# define TERM_VNULL 0x80 /* Manufactured x>NULL or x<=NULL term */ +# define TERM_VNULL 0x0080 /* Manufactured x>NULL or x<=NULL term */ #else -# define TERM_VNULL 0x00 /* Disabled if not using stat4 */ +# define TERM_VNULL 0x0000 /* Disabled if not using stat4 */ #endif -#define TERM_LIKEOPT 0x100 /* Virtual terms from the LIKE optimization */ -#define TERM_LIKECOND 0x200 /* Conditionally this LIKE operator term */ -#define TERM_LIKE 0x400 /* The original LIKE operator */ -#define TERM_IS 0x800 /* Term.pExpr is an IS operator */ +#define TERM_LIKEOPT 0x0100 /* Virtual terms from the LIKE optimization */ +#define TERM_LIKECOND 0x0200 /* Conditionally this LIKE operator term */ +#define TERM_LIKE 0x0400 /* The original LIKE operator */ +#define TERM_IS 0x0800 /* Term.pExpr is an IS operator */ #define TERM_VARSELECT 0x1000 /* Term.pExpr contains a correlated sub-query */ -#define TERM_NOPARTIDX 0x2000 /* Not for use to enable a partial index */ /* ** An instance of the WhereScan object is used as an iterator for locating @@ -435,6 +434,20 @@ struct WhereLoopBuilder { #endif /* +** Each instance of this object records a change to a single node +** in an expression tree to cause that node to point to a column +** of an index rather than an expression or a virtual column. All +** such transformations need to be undone at the end of WHERE clause +** processing. +*/ +typedef struct WhereExprMod WhereExprMod; +struct WhereExprMod { + WhereExprMod *pNext; /* Next translation on a list of them all */ + Expr *pExpr; /* The Expr node that was transformed */ + Expr orig; /* Original value of the Expr node */ +}; + +/* ** The WHERE clause processing routine has two halves. The ** first part does the start of the WHERE loop and the second ** half does the tail of the WHERE loop. An instance of @@ -450,23 +463,25 @@ struct WhereInfo { ExprList *pOrderBy; /* The ORDER BY clause or NULL */ ExprList *pResultSet; /* Result set of the query */ Expr *pWhere; /* The complete WHERE clause */ - LogEst iLimit; /* LIMIT if wctrlFlags has WHERE_USE_LIMIT */ int aiCurOnePass[2]; /* OP_OpenWrite cursors for the ONEPASS opt */ int iContinue; /* Jump here to continue with next record */ int iBreak; /* Jump here to break out of the loop */ int savedNQueryLoop; /* pParse->nQueryLoop outside the WHERE loop */ u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */ + LogEst iLimit; /* LIMIT if wctrlFlags has WHERE_USE_LIMIT */ u8 nLevel; /* Number of nested loop */ i8 nOBSat; /* Number of ORDER BY terms satisfied by indices */ - u8 sorted; /* True if really sorted (not just grouped) */ u8 eOnePass; /* ONEPASS_OFF, or _SINGLE, or _MULTI */ - u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */ u8 eDistinct; /* One of the WHERE_DISTINCT_* values */ - u8 bOrderedInnerLoop; /* True if only the inner-most loop is ordered */ + unsigned bDeferredSeek :1; /* Uses OP_DeferredSeek */ + unsigned untestedTerms :1; /* Not all WHERE terms resolved by outer loop */ + unsigned bOrderedInnerLoop:1;/* True if only the inner-most loop is ordered */ + unsigned sorted :1; /* True if really sorted (not just grouped) */ + LogEst nRowOut; /* Estimated number of output rows */ int iTop; /* The very beginning of the WHERE loop */ WhereLoop *pLoops; /* List of all WhereLoop objects */ + WhereExprMod *pExprMods; /* Expression modifications */ Bitmask revMask; /* Mask of ORDER BY terms that need reversing */ - LogEst nRowOut; /* Estimated number of output rows */ WhereClause sWC; /* Decomposition of the WHERE clause */ WhereMaskSet sMaskSet; /* Map cursor numbers to bitmasks */ WhereLevel a[1]; /* Information about each nest loop in WHERE */ @@ -480,6 +495,8 @@ struct WhereInfo { Bitmask sqlite3WhereGetMask(WhereMaskSet*,int); #ifdef WHERETRACE_ENABLED void sqlite3WhereClausePrint(WhereClause *pWC); +void sqlite3WhereTermPrint(WhereTerm *pTerm, int iTerm); +void sqlite3WhereLoopPrint(WhereLoop *p, WhereClause *pWC); #endif WhereTerm *sqlite3WhereFindTerm( WhereClause *pWC, /* The WHERE clause to be searched */ |