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Update the parser so that sub-queries and CTEs may have WITH clauses.

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FossilOrigin-Name: 704d3931b855562a619769955969d439c42ca406
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dan
2014-01-11 19:19:36 +00:00
parent 8b4718636c
commit 7d562dbe02
6 changed files with 98 additions and 32 deletions
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18
src/sqliteInt.h
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@@ -760,6 +760,7 @@ typedef struct VTable VTable;
typedef struct VtabCtx VtabCtx;
typedef struct Walker Walker;
typedef struct WhereInfo WhereInfo;
typedef struct With With;
/*
** Defer sourcing vdbe.h and btree.h until after the "u8" and
@@ -2631,6 +2632,19 @@ int sqlite3WalkSelectFrom(Walker*, Select*);
#define WRC_Prune 1 /* Omit children but continue walking siblings */
#define WRC_Abort 2 /* Abandon the tree walk */
/*
** An instance of this structure represents a set of CTEs (common table
** expressions) created by a single WITH clause.
*/
struct With {
int nCte; /* Number of CTEs */
struct Cte {
const char *zName; /* Name of this CTE */
IdList *pCol; /* List of explicit column names, or NULL */
Select *pSelect; /* The contents of the CTE */
} a[1];
};
/*
** Assuming zIn points to the first byte of a UTF-8 character,
** advance zIn to point to the first byte of the next UTF-8 character.
@@ -3330,8 +3344,8 @@ const char *sqlite3JournalModename(int);
int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int);
#endif
#ifndef SQLITE_OMIT_CTE
void sqlite3CteAdd(Parse*,Token*,ExprList*,Select*);
void sqlite3CteFinish(Parse*,int);
With *sqlite3WithAdd(Parse*,With*,Token*,IdList*,Select*);
void sqlite3WithDelete(sqlite3*,With*);
#endif
/* Declarations for functions in fkey.c. All of these are replaced by