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Code to implement CREATE VIEW is in place. A quick smoke test shows that

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it works, but there are probably still many bugs. (CVS 387)

FossilOrigin-Name: 39fed2df11382b9855d518502a6c2ca200fa66b8
This commit is contained in:
drh
2002-02-23 02:32:10 +00:00
parent 17f7193434
commit a76b5dfca6
12 changed files with 357 additions and 204 deletions
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22
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.89 2002/02/21 12:01:27 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.90 2002/02/23 02:32:10 drh Exp $
*/
#include "sqlite.h"
#include "hash.h"
@@ -250,6 +250,7 @@ struct Table {
int iPKey; /* If not less then 0, use aCol[iPKey] as the primary key */
Index *pIndex; /* List of SQL indexes on this table. */
int tnum; /* Root BTree node for this table (see note above) */
Select *pSelect; /* NULL for tables. Points to definition if a view. */
u8 readOnly; /* True if this table should not be written by the user */
u8 isCommit; /* True if creation of this table has been committed */
u8 isTemp; /* True if stored in db->pBeTemp instead of db->pBe */
@@ -442,6 +443,14 @@ struct WhereInfo {
/*
** An instance of the following structure contains all information
** needed to generate code for a single SELECT statement.
**
** The zSelect field is used when the Select structure must be persistent.
** Normally, the expression tree points to tokens in the original input
** string that encodes the select. But if the Select structure must live
** longer than its input string (for example when it is used to describe
** a VIEW) we have to make a copy of the input string so that the nodes
** of the expression tree will have something to point to. zSelect is used
** to hold that copy.
*/
struct Select {
int isDistinct; /* True if the DISTINCT keyword is present */
@@ -454,6 +463,7 @@ struct Select {
int op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
Select *pPrior; /* Prior select in a compound select statement */
int nLimit, nOffset; /* LIMIT and OFFSET values. -1 means not used */
char *zSelect; /* Complete text of the SELECT command */
};
/*
@@ -570,6 +580,7 @@ void sqliteAddPrimaryKey(Parse*, IdList*, int);
void sqliteAddColumnType(Parse*,Token*,Token*);
void sqliteAddDefaultValue(Parse*,Token*,int);
void sqliteEndTable(Parse*,Token*,Select*);
void sqliteCreateView(Parse*,Token*,Token*,Select*);
void sqliteDropTable(Parse*, Token*);
void sqliteDeleteTable(sqlite*, Table*);
void sqliteInsert(Parse*, Token*, ExprList*, Select*, IdList*, int);
@@ -582,6 +593,8 @@ int sqliteSelect(Parse*, Select*, int, int);
Select *sqliteSelectNew(ExprList*,IdList*,Expr*,ExprList*,Expr*,ExprList*,
int,int,int);
void sqliteSelectDelete(Select*);
Table *sqliteTableNameToTable(Parse*, const char*);
IdList *sqliteTableTokenToIdList(Parse*, Token*);
void sqliteDeleteFrom(Parse*, Token*, Expr*);
void sqliteUpdate(Parse*, Token*, ExprList*, Expr*, int);
WhereInfo *sqliteWhereBegin(Parse*, IdList*, Expr*, int);
@@ -589,8 +602,8 @@ void sqliteWhereEnd(WhereInfo*);
void sqliteExprCode(Parse*, Expr*);
void sqliteExprIfTrue(Parse*, Expr*, int);
void sqliteExprIfFalse(Parse*, Expr*, int);
Table *sqliteFindTable(sqlite*,char*);
Index *sqliteFindIndex(sqlite*,char*);
Table *sqliteFindTable(sqlite*,const char*);
Index *sqliteFindIndex(sqlite*,const char*);
void sqliteUnlinkAndDeleteIndex(sqlite*,Index*);
void sqliteCopy(Parse*, Token*, Token*, Token*, int);
void sqliteVacuum(Parse*, Token*);
@@ -618,3 +631,6 @@ void sqliteCompleteInsertion(Parse*, Table*, int, char*, int, int);
void sqliteBeginWriteOperation(Parse*);
void sqliteBeginMultiWriteOperation(Parse*);
void sqliteEndWriteOperation(Parse*);
void sqliteExprMoveStrings(Expr*, int);
void sqliteExprListMoveStrings(ExprList*, int);
void sqliteSelectMoveStrings(Select*, int);