database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-07 00:36:50 +03:00
Code Activity

First phase of work on array improvements. ARRAY[x,y,z] constructor

Browse Source 
expressions, ARRAY(sub-SELECT) expressions, some array functions.
Polymorphic functions using ANYARRAY/ANYELEMENT argument and return
types.  Some regression tests in place, documentation is lacking.
Joe Conway, with some kibitzing from Tom Lane.
This commit is contained in:
Tom Lane
2003-04-08 23:20:04 +00:00
parent 6fb5115850
commit 730840c9b6
47 changed files with 2597 additions and 479 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/include/nodes/execnodes.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: execnodes.h,v 1.96 2003/03/09 02:19:13 tgl Exp $
* $Id: execnodes.h,v 1.97 2003/04/08 23:20:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -427,6 +427,10 @@ typedef struct AggrefExprState
/* ----------------
* ArrayRefExprState node
*
* Note: array types can be fixed-length (typlen > 0), but only when the
* element type is itself fixed-length. Otherwise they are varlena structures
* and have typlen = -1. In any case, an array type is never pass-by-value.
* ----------------
*/
typedef struct ArrayRefExprState
@ -436,6 +440,10 @@ typedef struct ArrayRefExprState
List *reflowerindexpr;
ExprState *refexpr;
ExprState *refassgnexpr;
int16 refattrlength; /* typlen of array type */
int16 refelemlength; /* typlen of the array element type */
bool refelembyval; /* is the element type pass-by-value? */
char refelemalign; /* typalign of the element type */
} ArrayRefExprState;
/* ----------------
@ -540,6 +548,22 @@ typedef struct CaseWhenState
ExprState *result; /* substitution result */
} CaseWhenState;
/* ----------------
* ArrayExprState node
*
* Note: ARRAY[] expressions always produce varlena arrays, never fixed-length
* arrays.
* ----------------
*/
typedef struct ArrayExprState
{
ExprState xprstate;
List *elements; /* states for child nodes */
int16 elemlength; /* typlen of the array element type */
bool elembyval; /* is the element type pass-by-value? */
char elemalign; /* typalign of the element type */
} ArrayExprState;
/* ----------------
* CoalesceExprState node
* ----------------