decomp.h

Macros

AGBUFSIZ          X
FIRSTNUM          X
FREEVAR           X
LASTNUM           X
MAXRELN           X
NORESULT          X
NXTTUP            X
OVHDM             X
OVHDP             X
PARGSIZE          X
PBUFSIZE          X
QBUFSIZ           X
SECINDVAR         X
SQSIZ             X

   1: /*
   2: **	This header file contains all the defined constant
   3: **	and special structures used by decomposition. Certain
   4: **	global variables which are referenced by many modules
   5: **	are also included. By convention global names always
   6: **	begin with a capital letter.
   7: **
   8: **	Version:
   9: **		@(#)decomp.h	8.2	2/8/85
  10: */
  11: 
  12: 
  13: # include   <pv.h>
  14: 
  15: 
  16: 
  17: # define OVHDP      2       /*  overhead for a projection  */
  18: # define OVHDM      10      /*  overhead for a modify  */
  19: 
  20: # define MAXRELN    6       /* size of relation descriptor cache */
  21: 
  22: # define QBUFSIZ    2000        /* buffer size (bytes) of original query tree */
  23: # define SQSIZ      10000       /* buffer size for tree copies + sub-queries */
  24: # define AGBUFSIZ   350     /* buffer size for temp agg tree components */
  25: # define PBUFSIZE   500     /* size of parameter buffer area for setp() */
  26: # define PARGSIZE   PV_MAXPC    /* max number of arguments for setp() */
  27: 
  28: /* symbolic values for GETNXT parameter of fcn GET */
  29: # define NXTTUP 1   /* get next tuple after one specified by tid */
  30: 
  31: /* flag for no result relation */
  32: # define    NORESULT    -1
  33: 
  34: /* Range table slot which is always free for aggregate temp rels */
  35: # define    FREEVAR     MAXRANGE    /* free var number for aggs */
  36: 
  37: /* Range table slot which is used for secondary index */
  38: # define    SECINDVAR   MAXRANGE + 1
  39: 
  40: 
  41: 
  42: # define    FIRSTNUM    MAXRANGE + 3
  43: # define    LASTNUM     100