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Array mega-patch.

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Joe Conway
This commit is contained in:
Bruce Momjian
2003-06-24 23:14:49 +00:00
parent 50e53236af
commit 46bf651480
42 changed files with 2617 additions and 678 deletions
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24
src/include/nodes/primnodes.h
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@@ -10,7 +10,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: primnodes.h,v 1.83 2003/06/06 15:04:03 tgl Exp $
* $Id: primnodes.h,v 1.84 2003/06/24 23:14:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -226,6 +226,7 @@ typedef struct Aggref
Index agglevelsup; /* > 0 if agg belongs to outer query */
bool aggstar; /* TRUE if argument was really '*' */
bool aggdistinct; /* TRUE if it's agg(DISTINCT ...) */
List *args; /* arguments to the aggregate */
} Aggref;
/* ----------------
@@ -358,15 +359,19 @@ typedef struct BoolExpr
/* ----------------
* SubLink
*
* A SubLink represents a subselect appearing in an expression, and in some
* cases also the combining operator(s) just above it. The subLinkType
* indicates the form of the expression represented:
* A SubLink represents a subselect, or an expression, appearing in an
* expression, and in some cases also the combining operator(s) just above
* it. The subLinkType indicates the form of the expression represented:
* EXISTS_SUBLINK EXISTS(SELECT ...)
* ALL_SUBLINK (lefthand) op ALL (SELECT ...)
* ANY_SUBLINK (lefthand) op ANY (SELECT ...)
* MULTIEXPR_SUBLINK (lefthand) op (SELECT ...)
* EXPR_SUBLINK (SELECT with single targetlist item ...)
* ARRAY_SUBLINK ARRAY(SELECT with single targetlist item ...)
* If an expression is used in place of the subselect, it is transformed
* into a simple "(SELECT expr)" in gram.y. This is to allow arrays to be
* used as if they were the result of a single column subselect. If the
* expression is scalar, it is treated as a one element array.
* For ALL, ANY, and MULTIEXPR, the lefthand is a list of expressions of the
* same length as the subselect's targetlist. MULTIEXPR will *always* have
* a list with more than one entry; if the subselect has just one target
@@ -415,6 +420,8 @@ typedef struct SubLink
SubLinkType subLinkType; /* EXISTS, ALL, ANY, MULTIEXPR, EXPR */
bool useOr; /* TRUE to combine column results with
* "OR" not "AND" */
bool isExpr; /* TRUE if the subselect is really derived
* from a single expression */
List *lefthand; /* list of outer-query expressions on the
* left */
List *operName; /* originally specified operator name */
@@ -456,6 +463,15 @@ typedef struct SubPlan
SubLinkType subLinkType; /* EXISTS, ALL, ANY, MULTIEXPR, EXPR */
bool useOr; /* TRUE to combine column results with
* "OR" not "AND" */
bool isExpr; /* TRUE if the subselect is really derived
* from a single expression */
/* runtime cache for single array expressions */
Oid exprtype; /* array and element type, and other info
* needed deconstruct the array */
Oid elemtype;
int16 elmlen;
bool elmbyval;
char elmalign;
/* The combining operators, transformed to executable expressions: */
List *exprs; /* list of OpExpr expression trees */
List *paramIds; /* IDs of Params embedded in the above */