mirror of
https://github.com/postgres/postgres.git
synced 2025-11-16 15:02:33 +03:00
Change my-function-name-- to my_function_name, and optimizer renames.
This commit is contained in:
@@ -1,6 +1,6 @@
|
||||
/*-------------------------------------------------------------------------
|
||||
*
|
||||
* xfunc.c--
|
||||
* xfunc.c
|
||||
* Utility routines to handle expensive function optimization.
|
||||
* Includes xfunc_trypullup(), which attempts early pullup of predicates
|
||||
* to allow for maximal pruning.
|
||||
@@ -9,7 +9,7 @@
|
||||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/xfunc.c,v 1.27 1999/02/12 17:24:50 momjian Exp $
|
||||
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/xfunc.c,v 1.28 1999/02/13 23:16:24 momjian Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@@ -49,7 +49,7 @@ static int xfunc_card_unreferenced(Query *queryInfo,
|
||||
*/
|
||||
|
||||
/*
|
||||
** xfunc_trypullup --
|
||||
** xfunc_trypullup
|
||||
** Preliminary pullup of predicates, to allow for maximal pruning.
|
||||
** Given a relation, check each of its paths and see if you can
|
||||
** pullup clauses from its inner and outer.
|
||||
@@ -127,7 +127,7 @@ xfunc_trypullup(RelOptInfo rel)
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_shouldpull --
|
||||
** xfunc_shouldpull
|
||||
** find clause with highest rank, and decide whether to pull it up
|
||||
** from child to parent. Currently we only pullup secondary join clauses
|
||||
** that are in the pathrestrictinfo. Secondary hash and sort clauses are
|
||||
@@ -144,7 +144,7 @@ xfunc_shouldpull(Query *queryInfo,
|
||||
Path childpath,
|
||||
JoinPath parentpath,
|
||||
int whichchild,
|
||||
RestrictInfo * maxcinfopt) /* Out: pointer to clause
|
||||
RestrictInfo *maxcinfopt) /* Out: pointer to clause
|
||||
* to pullup */
|
||||
{
|
||||
LispValue clauselist,
|
||||
@@ -250,7 +250,7 @@ xfunc_shouldpull(Query *queryInfo,
|
||||
|
||||
|
||||
/*
|
||||
** xfunc_pullup --
|
||||
** xfunc_pullup
|
||||
** move clause from child pathnode to parent pathnode. This operation
|
||||
** makes the child pathnode produce a larger relation than it used to.
|
||||
** This means that we must construct a new RelOptInfo just for the childpath,
|
||||
@@ -386,7 +386,7 @@ LispValue clause;
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_join_expense --
|
||||
** xfunc_join_expense
|
||||
** Find global expense of a join clause
|
||||
*/
|
||||
Cost
|
||||
@@ -457,7 +457,7 @@ xfunc_local_expense(LispValue clause)
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_func_expense --
|
||||
** xfunc_func_expense
|
||||
** given a Func or Oper and its args, find its expense.
|
||||
** Note: in Stonebraker's SIGMOD '91 paper, he uses a more complicated metric
|
||||
** than the one here. We can ignore the expected number of tuples for
|
||||
@@ -581,7 +581,7 @@ xfunc_func_expense(LispValue node, LispValue args)
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_width --
|
||||
** xfunc_width
|
||||
** recursively find the width of a expression
|
||||
*/
|
||||
|
||||
@@ -1071,7 +1071,7 @@ xfunc_total_path_cost(JoinPath pathnode)
|
||||
|
||||
|
||||
/*
|
||||
** xfunc_expense_per_tuple --
|
||||
** xfunc_expense_per_tuple
|
||||
** return the expense of the join *per-tuple* of the input relation.
|
||||
** The cost model here is that a join costs
|
||||
** k*card(outer)*card(inner) + l*card(outer) + m*card(inner) + n
|
||||
@@ -1124,7 +1124,7 @@ xfunc_expense_per_tuple(JoinPath joinnode, int whichchild)
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_fixvars --
|
||||
** xfunc_fixvars
|
||||
** After pulling up a clause, we must walk its expression tree, fixing Var
|
||||
** nodes to point to the correct varno (either INNER or OUTER, depending
|
||||
** on which child the clause was pulled from), and the right varattno in the
|
||||
@@ -1154,7 +1154,7 @@ xfunc_fixvars(LispValue clause, /* clause being pulled up */
|
||||
* have to add it. *
|
||||
*
|
||||
*/
|
||||
add_tl_element(rel, (Var) clause);
|
||||
add_var_to_tlist(rel, (Var) clause);
|
||||
tle = tlistentry_member((Var) clause, get_targetlist(rel));
|
||||
}
|
||||
set_varno(((Var) clause), varno);
|
||||
@@ -1223,7 +1223,7 @@ xfunc_clause_compare(void *arg1, void *arg2)
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_disjunct_sort --
|
||||
** xfunc_disjunct_sort
|
||||
** given a list of clauses, for each clause sort the disjuncts by cost
|
||||
** (this assumes the predicates have been converted to Conjunctive NF)
|
||||
** Modifies the clause list!
|
||||
@@ -1287,7 +1287,7 @@ xfunc_disjunct_compare(Query *queryInfo, void *arg1, void *arg2)
|
||||
|
||||
/* ------------------------ UTILITY FUNCTIONS ------------------------------- */
|
||||
/*
|
||||
** xfunc_func_width --
|
||||
** xfunc_func_width
|
||||
** Given a function OID and operands, find the width of the return value.
|
||||
*/
|
||||
int
|
||||
@@ -1349,7 +1349,7 @@ exit:
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_tuple_width --
|
||||
** xfunc_tuple_width
|
||||
** Return the sum of the lengths of all the attributes of a given relation
|
||||
*/
|
||||
int
|
||||
@@ -1371,7 +1371,7 @@ xfunc_tuple_width(Relation rd)
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_num_join_clauses --
|
||||
** xfunc_num_join_clauses
|
||||
** Find the number of join clauses associated with this join path
|
||||
*/
|
||||
int
|
||||
@@ -1388,7 +1388,7 @@ xfunc_num_join_clauses(JoinPath path)
|
||||
}
|
||||
|
||||
/*
|
||||
** xfunc_LispRemove --
|
||||
** xfunc_LispRemove
|
||||
** Just like LispRemove, but it whines if the item to be removed ain't there
|
||||
*/
|
||||
LispValue
|
||||
@@ -1419,7 +1419,7 @@ do { \
|
||||
} while(0)
|
||||
|
||||
/*
|
||||
** xfunc_copyrel --
|
||||
** xfunc_copyrel
|
||||
** Just like _copyRel, but doesn't copy the paths
|
||||
*/
|
||||
bool
|
||||
|
||||
Reference in New Issue
Block a user