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Extend COPY to support COPY (SELECT ...) TO ...

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Bernd Helmle
This commit is contained in:
Tom Lane
2006-08-30 23:34:22 +00:00
parent 0d5065781d
commit 85188ab883
16 changed files with 854 additions and 339 deletions
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10
src/include/nodes/parsenodes.h
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@@ -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 1.325 2006/08/25 04:06:56 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.326 2006/08/30 23:34:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1012,16 +1012,22 @@ typedef struct GrantRoleStmt
/* ----------------------
* Copy Statement
*
* We support "COPY relation FROM file", "COPY relation TO file", and
* "COPY (query) TO file". In any given CopyStmt, exactly one of "relation"
* and "query" must be non-NULL. Note: "query" is a SelectStmt before
* parse analysis, and a Query afterwards.
* ----------------------
*/
typedef struct CopyStmt
{
NodeTag type;
RangeVar *relation; /* the relation to copy */
Query *query; /* the query to copy */
List *attlist; /* List of column names (as Strings), or NIL
* for all columns */
bool is_from; /* TO or FROM */
char *filename; /* if NULL, use stdin/stdout */
char *filename; /* filename, or NULL for STDIN/STDOUT */
List *options; /* List of DefElem nodes */
} CopyStmt;