Change FETCH/MOVE to use int8.

Dhanaraj M

diff --git a/src/backend/commands/portalcmds.c b/src/backend/commands/portalcmds.c
index 47e2829b7b3563e52dc21e9f6c0a75cb552b220e..a5b7370acd287ba77f65eba473514fdc4e24e57c 100644 (file)
--- a/src/backend/commands/portalcmds.c
+++ b/src/backend/commands/portalcmds.c
@@ -14,7 +14,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/commands/portalcmds.c,v 1.51 2006/08/29 02:11:29 momjian Exp $
+ *       $PostgreSQL: pgsql/src/backend/commands/portalcmds.c,v 1.52 2006/09/02 18:17:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -177,7 +177,7 @@ PerformPortalFetch(FetchStmt *stmt,
                                   char *completionTag)
 {
        Portal          portal;
-       long            nprocessed;
+       int64           nprocessed;
 
        /*
         * Disallow empty-string cursor name (conflicts with protocol-level
@@ -210,7 +210,7 @@ PerformPortalFetch(FetchStmt *stmt,
 
        /* Return command status if wanted */
        if (completionTag)
-               snprintf(completionTag, COMPLETION_TAG_BUFSIZE, "%s %ld",
+               snprintf(completionTag, COMPLETION_TAG_BUFSIZE, "%s " INT64_FORMAT,
                                 stmt->ismove ? "MOVE" : "FETCH",
                                 nprocessed);
 }

diff --git a/src/backend/executor/spi.c b/src/backend/executor/spi.c
index 3db05898871fdf581d822b1e767a1cce1ef04eef..e6268da6e543ac7ca316ea703611a7199aca5451 100644 (file)
--- a/src/backend/executor/spi.c
+++ b/src/backend/executor/spi.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.159 2006/08/29 02:11:29 momjian Exp $
+ *       $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.160 2006/09/02 18:17:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -45,7 +45,7 @@ static int    _SPI_pquery(QueryDesc *queryDesc, long tcount);
 
 static void _SPI_error_callback(void *arg);
 
-static void _SPI_cursor_operation(Portal portal, bool forward, long count,
+static void _SPI_cursor_operation(Portal portal, bool forward, int64 count,
                                          DestReceiver *dest);
 
 static _SPI_plan *_SPI_copy_plan(_SPI_plan *plan, int location);
@@ -980,7 +980,7 @@ SPI_cursor_find(const char *name)
  *     Fetch rows in a cursor
  */
 void
-SPI_cursor_fetch(Portal portal, bool forward, long count)
+SPI_cursor_fetch(Portal portal, bool forward, int64 count)
 {
        _SPI_cursor_operation(portal, forward, count,
                                                  CreateDestReceiver(DestSPI, NULL));
@@ -994,7 +994,7 @@ SPI_cursor_fetch(Portal portal, bool forward, long count)
  *     Move in a cursor
  */
 void
-SPI_cursor_move(Portal portal, bool forward, long count)
+SPI_cursor_move(Portal portal, bool forward, int64 count)
 {
        _SPI_cursor_operation(portal, forward, count, None_Receiver);
 }
@@ -1639,10 +1639,10 @@ _SPI_error_callback(void *arg)
  *     Do a FETCH or MOVE in a cursor
  */
 static void
-_SPI_cursor_operation(Portal portal, bool forward, long count,
+_SPI_cursor_operation(Portal portal, bool forward, int64 count,
                                          DestReceiver *dest)
 {
-       long            nfetched;
+       int64           nfetched;
 
        /* Check that the portal is valid */
        if (!PortalIsValid(portal))

diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 4a0ce515b8a74272c6c09c2b2bcf1c54bde88c83..f53ba9ce60d21c1f355366cc14cfeedf481b44dd 100644 (file)
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -11,7 +11,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.559 2006/08/30 23:34:21 tgl Exp $
+ *       $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.560 2006/09/02 18:17:17 momjian Exp $
  *
  * HISTORY
  *       AUTHOR                        DATE                    MAJOR EVENT
@@ -116,6 +116,7 @@ static void doNegateFloat(Value *v);
 %union
 {
        int                                     ival;
+       int64                           i64val; 
        char                            chr;
        char                            *str;
        const char                      *keyword;
@@ -322,6 +323,7 @@ static void doNegateFloat(Value *v);
 %type <boolean> opt_varying opt_timezone
 
 %type <ival>   Iconst SignedIconst
+%type <i64val>  SignedI64const
 %type <str>            Sconst comment_text
 %type <str>            RoleId opt_granted_by opt_boolean ColId_or_Sconst
 %type <list>   var_list var_list_or_default
@@ -446,6 +448,7 @@ static void doNegateFloat(Value *v);
 /* Special token types, not actually keywords - see the "lex" file */
 %token <str>   IDENT FCONST SCONST BCONST XCONST Op
 %token <ival>  ICONST PARAM
+%token <i64val> I64CONST 
 
 /* precedence: lowest to highest */
 %nonassoc      SET                             /* see relation_expr_opt_alias */
@@ -3354,6 +3357,27 @@ fetch_direction:
                                        n->howMany = $1;
                                        $$ = (Node *)n;
                                }
+                       | ABSOLUTE_P SignedI64const
+                               {
+                                               FetchStmt *n = makeNode(FetchStmt);
+                                               n->direction = FETCH_ABSOLUTE;
+                                               n->howMany = $2;
+                                               $$ = (Node *)n;
+                               }
+                       | RELATIVE_P SignedI64const
+                               {
+                                               FetchStmt *n = makeNode(FetchStmt);
+                                               n->direction = FETCH_RELATIVE;
+                                               n->howMany = $2;
+                                               $$ = (Node *)n;
+                               }
+                       | SignedI64const
+                               {
+                                               FetchStmt *n = makeNode(FetchStmt);
+                                               n->direction = FETCH_FORWARD;
+                                               n->howMany = $1;
+                                               $$ = (Node *)n;
+                               }
                        | ALL
                                {
                                        FetchStmt *n = makeNode(FetchStmt);
@@ -3375,6 +3399,13 @@ fetch_direction:
                                        n->howMany = $2;
                                        $$ = (Node *)n;
                                }
+                       | FORWARD SignedI64const
+                               {
+                                               FetchStmt *n = makeNode(FetchStmt);
+                                               n->direction = FETCH_FORWARD;
+                                               n->howMany = $2;
+                                               $$ = (Node *)n;
+                               }
                        | FORWARD ALL
                                {
                                        FetchStmt *n = makeNode(FetchStmt);
@@ -3396,6 +3427,13 @@ fetch_direction:
                                        n->howMany = $2;
                                        $$ = (Node *)n;
                                }
+                       | BACKWARD SignedI64const
+                               {
+                                               FetchStmt *n = makeNode(FetchStmt);
+                                               n->direction = FETCH_BACKWARD;
+                                               n->howMany = $2;
+                                               $$ = (Node *)n;
+                               }
                        | BACKWARD ALL
                                {
                                        FetchStmt *n = makeNode(FetchStmt);
@@ -8441,6 +8479,9 @@ RoleId:           ColId                                                                   { $$ = $1; };
 SignedIconst: ICONST                                                           { $$ = $1; }
                        | '-' ICONST                                                    { $$ = - $2; }
                ;
+SignedI64const: I64CONST                                                       { $$ = $1; }
+                       | '-' I64CONST                                                  { $$ = - $2; }
+               ;
 
 /*
  * Name classification hierarchy.

diff --git a/src/backend/parser/scan.l b/src/backend/parser/scan.l
index 13e9604e38e3f4f90e516755efa35fd9e0dc33fb..2a8ac8de86820b3ae5b4dc101e95db58395cef18 100644 (file)
--- a/src/backend/parser/scan.l
+++ b/src/backend/parser/scan.l
@@ -24,7 +24,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.135 2006/05/21 20:10:42 tgl Exp $
+ *       $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.136 2006/09/02 18:17:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -666,6 +666,22 @@ other                      .
 #endif
                                                )
                                        {
+                                               /* For Fetch/Move stmt, convert the string into int64 value */
+                                               if((strcmp(yylval.keyword, "fetch")==0) || (strcmp(yylval.keyword, "move")==0))
+                                               {
+                                                               int64 int64Val;
+                                                               errno = 0;
+       
+                                                               int64Val =      strtoll(yytext, &endptr, 10);
+                                                               if (*endptr != '\0' || errno == ERANGE)
+                                                               {
+                                                                                       yylval.str = pstrdup(yytext);
+                                                                                       return FCONST;
+                                                               }
+                                                               yylval.i64val = int64Val; 
+                                                               return I64CONST;
+                                               }
+
                                                /* integer too large, treat it as a float */
                                                yylval.str = pstrdup(yytext);
                                                return FCONST;

diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 6552d943431b77d0debade190c636f128377db45..62ad35bc00c2b1b1879c477393af8e51894bf2ff 100644 (file)
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.503 2006/08/30 18:22:02 momjian Exp $
+ *       $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.504 2006/09/02 18:17:17 momjian Exp $
  *
  * NOTES
  *       this is the "main" module of the postgres backend and
@@ -1687,7 +1687,7 @@ exec_bind_message(StringInfo input_message)
  * Process an "Execute" message for a portal
  */
 static void
-exec_execute_message(const char *portal_name, long max_rows)
+exec_execute_message(const char *portal_name, int64 max_rows)
 {
        CommandDest dest;
        DestReceiver *receiver;
@@ -3308,13 +3308,13 @@ PostgresMain(int argc, char *argv[], const char *username)
                        case 'E':                       /* execute */
                                {
                                        const char *portal_name;
-                                       int                     max_rows;
+                                       int64                   max_rows;
 
                                        /* Set statement_timestamp() */
                                        SetCurrentStatementStartTimestamp();
 
                                        portal_name = pq_getmsgstring(&input_message);
-                                       max_rows = pq_getmsgint(&input_message, 4);
+                                       max_rows = pq_getmsgint64(&input_message);
                                        pq_getmsgend(&input_message);
 
                                        exec_execute_message(portal_name, max_rows);

diff --git a/src/backend/tcop/pquery.c b/src/backend/tcop/pquery.c
index 3ede40570ab8e0181abe33cbceb6832544313ffa..257655ddb0f2dd34f7a0118e3ca94351ad2781f8 100644 (file)
--- a/src/backend/tcop/pquery.c
+++ b/src/backend/tcop/pquery.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/tcop/pquery.c,v 1.107 2006/08/14 22:57:15 tgl Exp $
+ *       $PostgreSQL: pgsql/src/backend/tcop/pquery.c,v 1.108 2006/09/02 18:17:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -38,18 +38,18 @@ static void ProcessQuery(Query *parsetree,
                         DestReceiver *dest,
                         char *completionTag);
 static void FillPortalStore(Portal portal);
-static uint32 RunFromStore(Portal portal, ScanDirection direction, long count,
+static uint64 RunFromStore(Portal portal, ScanDirection direction, int64 count,
                         DestReceiver *dest);
-static long PortalRunSelect(Portal portal, bool forward, long count,
+static int64 PortalRunSelect(Portal portal, bool forward, int64 count,
                                DestReceiver *dest);
 static void PortalRunUtility(Portal portal, Query *query,
                                 DestReceiver *dest, char *completionTag);
 static void PortalRunMulti(Portal portal,
                           DestReceiver *dest, DestReceiver *altdest,
                           char *completionTag);
-static long DoPortalRunFetch(Portal portal,
+static int64 DoPortalRunFetch(Portal portal,
                                 FetchDirection fdirection,
-                                long count,
+                                int64 count,
                                 DestReceiver *dest);
 static void DoPortalRewind(Portal portal);
 
@@ -581,7 +581,7 @@ PortalSetResultFormat(Portal portal, int nFormats, int16 *formats)
  * suspended due to exhaustion of the count parameter.
  */
 bool
-PortalRun(Portal portal, long count,
+PortalRun(Portal portal, int64 count,
                  DestReceiver *dest, DestReceiver *altdest,
                  char *completionTag)
 {
@@ -773,15 +773,15 @@ PortalRun(Portal portal, long count,
  *
  * Returns number of rows processed (suitable for use in result tag)
  */
-static long
+static int64
 PortalRunSelect(Portal portal,
                                bool forward,
-                               long count,
+                               int64 count,
                                DestReceiver *dest)
 {
        QueryDesc  *queryDesc;
        ScanDirection direction;
-       uint32          nprocessed;
+       uint64          nprocessed;
 
        /*
         * NB: queryDesc will be NULL if we are fetching from a held cursor or a
@@ -834,12 +834,12 @@ PortalRunSelect(Portal portal,
 
                if (!ScanDirectionIsNoMovement(direction))
                {
-                       long            oldPos;
+                       int64           oldPos;
 
                        if (nprocessed > 0)
                                portal->atStart = false;                /* OK to go backward now */
                        if (count == 0 ||
-                               (unsigned long) nprocessed < (unsigned long) count)
+                               (uint64) nprocessed < (uint64) count)
                                portal->atEnd = true;   /* we retrieved 'em all */
                        oldPos = portal->portalPos;
                        portal->portalPos += nprocessed;
@@ -882,7 +882,7 @@ PortalRunSelect(Portal portal,
                                portal->portalPos++;    /* adjust for endpoint case */
                        }
                        if (count == 0 ||
-                               (unsigned long) nprocessed < (unsigned long) count)
+                               (uint64) nprocessed < (uint64) count)
                        {
                                portal->atStart = true; /* we retrieved 'em all */
                                portal->portalPos = 0;
@@ -890,7 +890,7 @@ PortalRunSelect(Portal portal,
                        }
                        else
                        {
-                               long            oldPos;
+                               int64           oldPos;
 
                                oldPos = portal->portalPos;
                                portal->portalPos -= nprocessed;
@@ -958,11 +958,11 @@ FillPortalStore(Portal portal)
  * are run in the caller's memory context (since we have no estate).  Watch
  * out for memory leaks.
  */
-static uint32
-RunFromStore(Portal portal, ScanDirection direction, long count,
+static uint64
+RunFromStore(Portal portal, ScanDirection direction, int64 count,
                         DestReceiver *dest)
 {
-       long            current_tuple_count = 0;
+       int64           current_tuple_count = 0;
        TupleTableSlot *slot;
 
        slot = MakeSingleTupleTableSlot(portal->tupDesc);
@@ -1010,7 +1010,7 @@ RunFromStore(Portal portal, ScanDirection direction, long count,
 
        ExecDropSingleTupleTableSlot(slot);
 
-       return (uint32) current_tuple_count;
+       return (uint64) current_tuple_count;
 }
 
 /*
@@ -1200,13 +1200,13 @@ PortalRunMulti(Portal portal,
  *
  * Returns number of rows processed (suitable for use in result tag)
  */
-long
+int64
 PortalRunFetch(Portal portal,
                           FetchDirection fdirection,
-                          long count,
+                          int64 count,
                           DestReceiver *dest)
 {
-       long            result;
+       int64           result;
        Portal          saveActivePortal;
        Snapshot        saveActiveSnapshot;
        ResourceOwner saveResourceOwner;
@@ -1307,10 +1307,10 @@ PortalRunFetch(Portal portal,
  *
  * Returns number of rows processed (suitable for use in result tag)
  */
-static long
+static int64
 DoPortalRunFetch(Portal portal,
                                 FetchDirection fdirection,
-                                long count,
+                                int64 count,
                                 DestReceiver *dest)
 {
        bool            forward;
@@ -1347,7 +1347,7 @@ DoPortalRunFetch(Portal portal,
                                 * we are.      In any case, we arrange to fetch the target row
                                 * going forwards.
                                 */
-                               if (portal->posOverflow || portal->portalPos == LONG_MAX ||
+                               if (portal->posOverflow || portal->portalPos == LLONG_MAX ||
                                        count - 1 <= portal->portalPos / 2)
                                {
                                        DoPortalRewind(portal);
@@ -1357,7 +1357,7 @@ DoPortalRunFetch(Portal portal,
                                }
                                else
                                {
-                                       long            pos = portal->portalPos;
+                                       int64           pos = portal->portalPos;
 
                                        if (portal->atEnd)
                                                pos++;  /* need one extra fetch if off end */
@@ -1469,7 +1469,7 @@ DoPortalRunFetch(Portal portal,
         */
        if (!forward && count == FETCH_ALL && dest->mydest == DestNone)
        {
-               long            result = portal->portalPos;
+               int64           result = portal->portalPos;
 
                if (result > 0 && !portal->atEnd)
                        result--;

diff --git a/src/include/executor/spi.h b/src/include/executor/spi.h
index 0d91290968dabe3b8ac6ae228a9a013e8ca9d822..b8833b355a1456f02ef0283d54a4da33db1bc316 100644 (file)
--- a/src/include/executor/spi.h
+++ b/src/include/executor/spi.h
@@ -2,7 +2,7 @@
  *
  * spi.h
  *
- * $PostgreSQL: pgsql/src/include/executor/spi.h,v 1.55 2006/08/27 23:47:58 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/executor/spi.h,v 1.56 2006/09/02 18:17:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -126,8 +126,8 @@ extern void SPI_freetuptable(SPITupleTable *tuptable);
 extern Portal SPI_cursor_open(const char *name, void *plan,
                                Datum *Values, const char *Nulls, bool read_only);
 extern Portal SPI_cursor_find(const char *name);
-extern void SPI_cursor_fetch(Portal portal, bool forward, long count);
-extern void SPI_cursor_move(Portal portal, bool forward, long count);
+extern void SPI_cursor_fetch(Portal portal, bool forward, int64 count);
+extern void SPI_cursor_move(Portal portal, bool forward, int64 count);
 extern void SPI_cursor_close(Portal portal);
 
 extern void AtEOXact_SPI(bool isCommit);

diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 9e808396734416fc69b5d695edd9af8715222700..acdb05ed4fe436b4d402f12a92502a689affd017 100644 (file)
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.326 2006/08/30 23:34:22 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.327 2006/09/02 18:17:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1439,13 +1439,13 @@ typedef enum FetchDirection
        FETCH_RELATIVE
 } FetchDirection;
 
-#define FETCH_ALL      LONG_MAX
+#define FETCH_ALL      LLONG_MAX
 
 typedef struct FetchStmt
 {
        NodeTag         type;
        FetchDirection direction;       /* see above */
-       long            howMany;                /* number of rows, or position argument */
+       int64           howMany;                /* number of rows, or position argument */
        char       *portalname;         /* name of portal (cursor) */
        bool            ismove;                 /* TRUE if MOVE */
 } FetchStmt;

diff --git a/src/include/tcop/pquery.h b/src/include/tcop/pquery.h
index 9a52009d69355939a371ec6da3c3cfa470f22657..eeeaf70a6b179669f158696660671fcbbb642b2f 100644 (file)
--- a/src/include/tcop/pquery.h
+++ b/src/include/tcop/pquery.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/tcop/pquery.h,v 1.37 2006/03/05 15:59:00 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/tcop/pquery.h,v 1.38 2006/09/02 18:17:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -30,13 +30,13 @@ extern void PortalStart(Portal portal, ParamListInfo params,
 extern void PortalSetResultFormat(Portal portal, int nFormats,
                                          int16 *formats);
 
-extern bool PortalRun(Portal portal, long count,
+extern bool PortalRun(Portal portal, int64 count,
                  DestReceiver *dest, DestReceiver *altdest,
                  char *completionTag);
 
-extern long PortalRunFetch(Portal portal,
+extern int64 PortalRunFetch(Portal portal,
                           FetchDirection fdirection,
-                          long count,
+                          int64 count,
                           DestReceiver *dest);
 
 #endif   /* PQUERY_H */

diff --git a/src/include/utils/portal.h b/src/include/utils/portal.h
index bf3d503004cf6dd3354ec06c238a28e4477e91ca..8104edbca8f7d2473204c88a925f1a06559231ff 100644 (file)
--- a/src/include/utils/portal.h
+++ b/src/include/utils/portal.h
@@ -39,7 +39,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/portal.h,v 1.67 2006/08/29 02:11:30 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/utils/portal.h,v 1.68 2006/09/02 18:17:18 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -173,7 +173,7 @@ typedef struct PortalData
        bool            atStart;
        bool            atEnd;
        bool            posOverflow;
-       long            portalPos;
+       int64           portalPos;
 
        /* Presentation data, primarily used by the pg_cursors system view */
        TimestampTz     creation_time;  /* time at which this portal was defined */