mirror of
https://github.com/postgres/postgres.git
synced 2025-04-22 23:02:54 +03:00
Extend COPY to support COPY (SELECT ...) TO ...
Bernd Helmle
This commit is contained in:
Tom Lane
parent
0d5065781d
commit
85188ab883
@ -1,5 +1,5 @@
|
||||
<!--
|
||||
$PostgreSQL: pgsql/doc/src/sgml/ref/copy.sgml,v 1.74 2006/04/22 03:03:11 momjian Exp $
|
||||
$PostgreSQL: pgsql/doc/src/sgml/ref/copy.sgml,v 1.75 2006/08/30 23:34:20 tgl Exp $
|
||||
PostgreSQL documentation
|
||||
-->
|
||||
|
||||
@ -33,7 +33,7 @@ COPY <replaceable class="parameter">tablename</replaceable> [ ( <replaceable cla
|
||||
[ ESCAPE [ AS ] '<replaceable class="parameter">escape</replaceable>' ]
|
||||
[ FORCE NOT NULL <replaceable class="parameter">column</replaceable> [, ...] ]
|
||||
|
||||
COPY <replaceable class="parameter">tablename</replaceable> [ ( <replaceable class="parameter">column</replaceable> [, ...] ) ]
|
||||
COPY { <replaceable class="parameter">tablename</replaceable> [ ( <replaceable class="parameter">column</replaceable> [, ...] ) ] | ( <replaceable class="parameter">query</replaceable> ) }
|
||||
TO { '<replaceable class="parameter">filename</replaceable>' | STDOUT }
|
||||
[ [ WITH ]
|
||||
[ BINARY ]
|
||||
@ -57,7 +57,8 @@ COPY <replaceable class="parameter">tablename</replaceable> [ ( <replaceable cla
|
||||
files. <command>COPY TO</command> copies the contents of a table
|
||||
<emphasis>to</> a file, while <command>COPY FROM</command> copies
|
||||
data <emphasis>from</> a file to a table (appending the data to
|
||||
whatever is in the table already).
|
||||
whatever is in the table already). <command>COPY TO</command>
|
||||
can also copy the results of a <command>SELECT</> query.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
@ -97,7 +98,17 @@ COPY <replaceable class="parameter">tablename</replaceable> [ ( <replaceable cla
|
||||
<listitem>
|
||||
<para>
|
||||
An optional list of columns to be copied. If no column list is
|
||||
specified, all columns will be used.
|
||||
specified, all columns of the table will be copied.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term><replaceable class="parameter">query</replaceable></term>
|
||||
<listitem>
|
||||
<para>
|
||||
A <command>SELECT</> query whose results are to be copied.
|
||||
Note that parentheses are required around the query.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
@ -148,7 +159,8 @@ COPY <replaceable class="parameter">tablename</replaceable> [ ( <replaceable cla
|
||||
<para>
|
||||
Specifies copying the OID for each row. (An error is raised if
|
||||
<literal>OIDS</literal> is specified for a table that does not
|
||||
have OIDs.)
|
||||
have OIDs, or in the case of copying a <replaceable
|
||||
class="parameter">query</replaceable>.)
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
@ -265,7 +277,7 @@ COPY <replaceable class="parameter">tablename</replaceable> [ ( <replaceable cla
|
||||
COPY <replaceable class="parameter">count</replaceable>
|
||||
</screen>
|
||||
The <replaceable class="parameter">count</replaceable> is the number
|
||||
of rows inserted into or copied from the table.
|
||||
of rows copied.
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
@ -274,7 +286,8 @@ COPY <replaceable class="parameter">count</replaceable>
|
||||
|
||||
<para>
|
||||
<command>COPY</command> can only be used with plain tables, not
|
||||
with views.
|
||||
with views. However, you can write <literal>COPY (SELECT * FROM
|
||||
<replaceable class="parameter">viewname</replaceable>) TO ...</literal>.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
@ -320,8 +333,8 @@ COPY <replaceable class="parameter">count</replaceable>
|
||||
server in the case of <command>COPY TO</command>, but for
|
||||
<command>COPY FROM</command> you do have the option of reading from
|
||||
a file specified by a relative path. The path will be interpreted
|
||||
relative to the working directory of the server process (somewhere below
|
||||
the data directory), not the client's working directory.
|
||||
relative to the working directory of the server process (normally
|
||||
the cluster's data directory), not the client's working directory.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
@ -737,14 +750,9 @@ COPY country FROM '/usr1/proj/bray/sql/country_data';
|
||||
</para>
|
||||
|
||||
<para>
|
||||
To copy into a file just the countries whose names start with 'A'
|
||||
using a temporary table which is automatically deleted:
|
||||
To copy into a file just the countries whose names start with 'A':
|
||||
<programlisting>
|
||||
BEGIN;
|
||||
CREATE TEMP TABLE a_list_countries AS
|
||||
SELECT * FROM country WHERE country_name LIKE 'A%';
|
||||
COPY a_list_countries TO '/usr1/proj/bray/sql/a_list_countries.copy';
|
||||
ROLLBACK;
|
||||
COPY (SELECT * FROM country WHERE country_name LIKE 'A%') TO '/usr1/proj/bray/sql/a_list_countries.copy';
|
||||
</programlisting>
|
||||
</para>
|
||||
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
<!--
|
||||
$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.167 2006/08/29 22:25:04 tgl Exp $
|
||||
$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.168 2006/08/30 23:34:21 tgl Exp $
|
||||
PostgreSQL documentation
|
||||
-->
|
||||
|
||||
@ -739,8 +739,7 @@ testdb=>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term><literal>\copy <replaceable class="parameter">table</replaceable>
|
||||
[ ( <replaceable class="parameter">column_list</replaceable> ) ]
|
||||
<term><literal>\copy { <replaceable class="parameter">table</replaceable> [ ( <replaceable class="parameter">column_list</replaceable> ) ] | ( <replaceable class="parameter">query</replaceable> ) }
|
||||
{ <literal>from</literal> | <literal>to</literal> }
|
||||
{ <replaceable class="parameter">filename</replaceable> | stdin | stdout | pstdin | pstdout }
|
||||
[ with ]
|
||||
@ -779,9 +778,7 @@ testdb=>
|
||||
</para>
|
||||
|
||||
<para>
|
||||
<literal>\copy <replaceable
|
||||
class="parameter">table</replaceable> from <replaceable
|
||||
class="parameter">stdin | stdout</replaceable></literal>
|
||||
<literal>\copy ... from stdin | to stdout</literal>
|
||||
reads/writes based on the command input and output respectively.
|
||||
All rows are read from the same source that issued the command,
|
||||
continuing until <literal>\.</literal> is read or the stream
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -15,7 +15,7 @@
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.349 2006/08/25 04:06:49 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.350 2006/08/30 23:34:21 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -1934,6 +1934,7 @@ _copyCopyStmt(CopyStmt *from)
|
||||
CopyStmt *newnode = makeNode(CopyStmt);
|
||||
|
||||
COPY_NODE_FIELD(relation);
|
||||
COPY_NODE_FIELD(query);
|
||||
COPY_NODE_FIELD(attlist);
|
||||
COPY_SCALAR_FIELD(is_from);
|
||||
COPY_STRING_FIELD(filename);
|
||||
|
||||
@ -18,7 +18,7 @@
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.283 2006/08/25 04:06:49 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.284 2006/08/30 23:34:21 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -863,6 +863,7 @@ static bool
|
||||
_equalCopyStmt(CopyStmt *a, CopyStmt *b)
|
||||
{
|
||||
COMPARE_NODE_FIELD(relation);
|
||||
COMPARE_NODE_FIELD(query);
|
||||
COMPARE_NODE_FIELD(attlist);
|
||||
COMPARE_SCALAR_FIELD(is_from);
|
||||
COMPARE_STRING_FIELD(filename);
|
||||
|
||||
@ -6,7 +6,7 @@
|
||||
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.348 2006/08/25 04:06:51 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.349 2006/08/30 23:34:21 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -341,6 +341,19 @@ transformStmt(ParseState *pstate, Node *parseTree,
|
||||
}
|
||||
break;
|
||||
|
||||
case T_CopyStmt:
|
||||
{
|
||||
CopyStmt *n = (CopyStmt *) parseTree;
|
||||
|
||||
result = makeNode(Query);
|
||||
result->commandType = CMD_UTILITY;
|
||||
if (n->query)
|
||||
n->query = transformStmt(pstate, (Node *) n->query,
|
||||
extras_before, extras_after);
|
||||
result->utilityStmt = (Node *) parseTree;
|
||||
}
|
||||
break;
|
||||
|
||||
case T_AlterTableStmt:
|
||||
result = transformAlterTableStmt(pstate,
|
||||
(AlterTableStmt *) parseTree,
|
||||
|
||||
@ -11,7 +11,7 @@
|
||||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.558 2006/08/25 04:06:51 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.559 2006/08/30 23:34:21 tgl Exp $
|
||||
*
|
||||
* HISTORY
|
||||
* AUTHOR DATE MAJOR EVENT
|
||||
@ -1614,11 +1614,15 @@ ClosePortalStmt:
|
||||
/*****************************************************************************
|
||||
*
|
||||
* QUERY :
|
||||
* COPY <relname> ['(' columnList ')'] FROM/TO [WITH options]
|
||||
* COPY relname ['(' columnList ')'] FROM/TO file [WITH options]
|
||||
*
|
||||
* BINARY, OIDS, and DELIMITERS kept in old locations
|
||||
* for backward compatibility. 2002-06-18
|
||||
*
|
||||
* COPY ( SELECT ... ) TO file [WITH options]
|
||||
* This form doesn't have the backwards-compatible option
|
||||
* syntax.
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
CopyStmt: COPY opt_binary qualified_name opt_column_list opt_oids
|
||||
@ -1626,6 +1630,7 @@ CopyStmt: COPY opt_binary qualified_name opt_column_list opt_oids
|
||||
{
|
||||
CopyStmt *n = makeNode(CopyStmt);
|
||||
n->relation = $3;
|
||||
n->query = NULL;
|
||||
n->attlist = $4;
|
||||
n->is_from = $6;
|
||||
n->filename = $7;
|
||||
@ -1642,6 +1647,18 @@ CopyStmt: COPY opt_binary qualified_name opt_column_list opt_oids
|
||||
n->options = list_concat(n->options, $10);
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| COPY select_with_parens TO copy_file_name opt_with
|
||||
copy_opt_list
|
||||
{
|
||||
CopyStmt *n = makeNode(CopyStmt);
|
||||
n->relation = NULL;
|
||||
n->query = (Query *) $2;
|
||||
n->attlist = NIL;
|
||||
n->is_from = false;
|
||||
n->filename = $4;
|
||||
n->options = $6;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
;
|
||||
|
||||
copy_from:
|
||||
@ -1652,7 +1669,7 @@ copy_from:
|
||||
/*
|
||||
* copy_file_name NULL indicates stdio is used. Whether stdin or stdout is
|
||||
* used depends on the direction. (It really doesn't make sense to copy from
|
||||
* stdout. We silently correct the "typo". - AY 9/94
|
||||
* stdout. We silently correct the "typo".) - AY 9/94
|
||||
*/
|
||||
copy_file_name:
|
||||
Sconst { $$ = $1; }
|
||||
|
||||
@ -8,7 +8,7 @@
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/tcop/dest.c,v 1.69 2006/08/12 02:52:05 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/tcop/dest.c,v 1.70 2006/08/30 23:34:21 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -30,6 +30,7 @@
|
||||
|
||||
#include "access/printtup.h"
|
||||
#include "access/xact.h"
|
||||
#include "commands/copy.h"
|
||||
#include "executor/executor.h"
|
||||
#include "executor/tstoreReceiver.h"
|
||||
#include "libpq/libpq.h"
|
||||
@ -128,6 +129,9 @@ CreateDestReceiver(CommandDest dest, Portal portal)
|
||||
|
||||
case DestIntoRel:
|
||||
return CreateIntoRelDestReceiver();
|
||||
|
||||
case DestCopyOut:
|
||||
return CreateCopyDestReceiver();
|
||||
}
|
||||
|
||||
/* should never get here */
|
||||
@ -153,6 +157,7 @@ EndCommand(const char *commandTag, CommandDest dest)
|
||||
case DestSPI:
|
||||
case DestTuplestore:
|
||||
case DestIntoRel:
|
||||
case DestCopyOut:
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -192,6 +197,7 @@ NullCommand(CommandDest dest)
|
||||
case DestSPI:
|
||||
case DestTuplestore:
|
||||
case DestIntoRel:
|
||||
case DestCopyOut:
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -233,6 +239,7 @@ ReadyForQuery(CommandDest dest)
|
||||
case DestSPI:
|
||||
case DestTuplestore:
|
||||
case DestIntoRel:
|
||||
case DestCopyOut:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
@ -3,7 +3,7 @@
|
||||
*
|
||||
* Copyright (c) 2000-2006, PostgreSQL Global Development Group
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/bin/psql/copy.c,v 1.67 2006/08/29 15:19:50 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/bin/psql/copy.c,v 1.68 2006/08/30 23:34:22 tgl Exp $
|
||||
*/
|
||||
#include "postgres_fe.h"
|
||||
#include "copy.h"
|
||||
@ -39,6 +39,9 @@
|
||||
* \copy tablename [(columnlist)] from|to filename
|
||||
* [ with ] [ binary ] [ oids ] [ delimiter [as] char ] [ null [as] string ]
|
||||
*
|
||||
* \copy ( select stmt ) to filename
|
||||
* [ with ] [ binary ] [ delimiter [as] char ] [ null [as] string ]
|
||||
*
|
||||
* The pre-7.3 syntax was:
|
||||
* \copy [ binary ] tablename [(columnlist)] [with oids] from|to filename
|
||||
* [ [using] delimiters char ] [ with null as string ]
|
||||
@ -142,6 +145,26 @@ parse_slash_copy(const char *args)
|
||||
|
||||
result->table = pg_strdup(token);
|
||||
|
||||
/* Handle COPY (SELECT) case */
|
||||
if (token[0] == '(')
|
||||
{
|
||||
int parens = 1;
|
||||
|
||||
while (parens > 0)
|
||||
{
|
||||
token = strtokx(NULL, whitespace, ".,()", "\"'",
|
||||
nonstd_backslash, true, false, pset.encoding);
|
||||
if (!token)
|
||||
goto error;
|
||||
if (token[0] == '(')
|
||||
parens++;
|
||||
else if (token[0] == ')')
|
||||
parens--;
|
||||
xstrcat(&result->table, " ");
|
||||
xstrcat(&result->table, token);
|
||||
}
|
||||
}
|
||||
|
||||
token = strtokx(NULL, whitespace, ".,()", "\"",
|
||||
0, false, false, pset.encoding);
|
||||
if (!token)
|
||||
|
||||
@ -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/commands/copy.h,v 1.27 2006/03/05 15:58:55 momjian Exp $
|
||||
* $PostgreSQL: pgsql/src/include/commands/copy.h,v 1.28 2006/08/30 23:34:22 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -15,8 +15,11 @@
|
||||
#define COPY_H
|
||||
|
||||
#include "nodes/parsenodes.h"
|
||||
#include "tcop/dest.h"
|
||||
|
||||
|
||||
extern uint64 DoCopy(const CopyStmt *stmt);
|
||||
|
||||
extern DestReceiver *CreateCopyDestReceiver(void);
|
||||
|
||||
#endif /* COPY_H */
|
||||
|
||||
@ -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;
|
||||
|
||||
|
||||
@ -54,7 +54,7 @@
|
||||
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/tcop/dest.h,v 1.51 2006/08/12 02:52:06 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/include/tcop/dest.h,v 1.52 2006/08/30 23:34:22 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -85,7 +85,8 @@ typedef enum
|
||||
DestRemoteExecute, /* sent to frontend, in Execute command */
|
||||
DestSPI, /* results sent to SPI manager */
|
||||
DestTuplestore, /* results sent to Tuplestore */
|
||||
DestIntoRel /* results sent to relation (SELECT INTO) */
|
||||
DestIntoRel, /* results sent to relation (SELECT INTO) */
|
||||
DestCopyOut /* results sent to COPY TO code */
|
||||
} CommandDest;
|
||||
|
||||
/* ----------------
|
||||
|
||||
126
src/test/regress/expected/copyselect.out
Normal file
126
src/test/regress/expected/copyselect.out
Normal file
@ -0,0 +1,126 @@
|
||||
--
|
||||
-- Test cases for COPY (select) TO
|
||||
--
|
||||
create table test1 (id serial, t text);
|
||||
NOTICE: CREATE TABLE will create implicit sequence "test1_id_seq" for serial column "test1.id"
|
||||
insert into test1 (t) values ('a');
|
||||
insert into test1 (t) values ('b');
|
||||
insert into test1 (t) values ('c');
|
||||
insert into test1 (t) values ('d');
|
||||
insert into test1 (t) values ('e');
|
||||
create table test2 (id serial, t text);
|
||||
NOTICE: CREATE TABLE will create implicit sequence "test2_id_seq" for serial column "test2.id"
|
||||
insert into test2 (t) values ('A');
|
||||
insert into test2 (t) values ('B');
|
||||
insert into test2 (t) values ('C');
|
||||
insert into test2 (t) values ('D');
|
||||
insert into test2 (t) values ('E');
|
||||
create view v_test1
|
||||
as select 'v_'||t from test1;
|
||||
--
|
||||
-- Test COPY table TO
|
||||
--
|
||||
copy test1 to stdout;
|
||||
1 a
|
||||
2 b
|
||||
3 c
|
||||
4 d
|
||||
5 e
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy v_test1 to stdout;
|
||||
ERROR: cannot copy from view "v_test1"
|
||||
HINT: Try the COPY (SELECT ...) TO variant.
|
||||
--
|
||||
-- Test COPY (select) TO
|
||||
--
|
||||
copy (select t from test1 where id=1) to stdout;
|
||||
a
|
||||
--
|
||||
-- Test COPY (select for update) TO
|
||||
--
|
||||
copy (select t from test1 where id=3 for update) to stdout;
|
||||
c
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy (select t into temp test3 from test1 where id=3) to stdout;
|
||||
ERROR: COPY (SELECT INTO) is not supported
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy (select * from test1) from stdin;
|
||||
ERROR: syntax error at or near "from"
|
||||
LINE 1: copy (select * from test1) from stdin;
|
||||
^
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy (select * from test1) (t,id) to stdout;
|
||||
ERROR: syntax error at or near "("
|
||||
LINE 1: copy (select * from test1) (t,id) to stdout;
|
||||
^
|
||||
--
|
||||
-- Test JOIN
|
||||
--
|
||||
copy (select * from test1 join test2 using (id)) to stdout;
|
||||
1 a A
|
||||
2 b B
|
||||
3 c C
|
||||
4 d D
|
||||
5 e E
|
||||
--
|
||||
-- Test UNION SELECT
|
||||
--
|
||||
copy (select t from test1 where id = 1 UNION select * from v_test1) to stdout;
|
||||
a
|
||||
v_a
|
||||
v_b
|
||||
v_c
|
||||
v_d
|
||||
v_e
|
||||
--
|
||||
-- Test subselect
|
||||
--
|
||||
copy (select * from (select t from test1 where id = 1 UNION select * from v_test1) t1) to stdout;
|
||||
a
|
||||
v_a
|
||||
v_b
|
||||
v_c
|
||||
v_d
|
||||
v_e
|
||||
--
|
||||
-- Test headers, CSV and quotes
|
||||
--
|
||||
copy (select t from test1 where id = 1) to stdout csv header force quote t;
|
||||
t
|
||||
"a"
|
||||
--
|
||||
-- Test psql builtins, plain table
|
||||
--
|
||||
\copy test1 to stdout
|
||||
1 a
|
||||
2 b
|
||||
3 c
|
||||
4 d
|
||||
5 e
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
\copy v_test1 to stdout
|
||||
ERROR: cannot copy from view "v_test1"
|
||||
HINT: Try the COPY (SELECT ...) TO variant.
|
||||
\copy: ERROR: cannot copy from view "v_test1"
|
||||
HINT: Try the COPY (SELECT ...) TO variant.
|
||||
--
|
||||
-- Test \copy (select ...)
|
||||
--
|
||||
\copy (select "id",'id','id""'||t,(id + 1)*id,t,"test1"."t" from test1 where id=3) to stdout
|
||||
3 id id""c 12 c c
|
||||
--
|
||||
-- Drop everything
|
||||
--
|
||||
drop table test2;
|
||||
drop view v_test1;
|
||||
drop table test1;
|
||||
@ -1,6 +1,6 @@
|
||||
# ----------
|
||||
# The first group of parallel test
|
||||
# $PostgreSQL: pgsql/src/test/regress/parallel_schedule,v 1.34 2006/08/12 02:52:06 tgl Exp $
|
||||
# $PostgreSQL: pgsql/src/test/regress/parallel_schedule,v 1.35 2006/08/30 23:34:22 tgl Exp $
|
||||
# ----------
|
||||
test: boolean char name varchar text int2 int4 int8 oid float4 float8 bit numeric
|
||||
|
||||
@ -34,7 +34,7 @@ test: create_function_2
|
||||
# execute two copy tests parallel, to check that copy itself
|
||||
# is concurrent safe.
|
||||
# ----------
|
||||
test: copy
|
||||
test: copy copyselect
|
||||
|
||||
# ----------
|
||||
# The third group of parallel test
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
# $PostgreSQL: pgsql/src/test/regress/serial_schedule,v 1.32 2006/08/12 02:52:06 tgl Exp $
|
||||
# $PostgreSQL: pgsql/src/test/regress/serial_schedule,v 1.33 2006/08/30 23:34:22 tgl Exp $
|
||||
# This should probably be in an order similar to parallel_schedule.
|
||||
test: boolean
|
||||
test: char
|
||||
@ -43,6 +43,7 @@ test: create_type
|
||||
test: create_table
|
||||
test: create_function_2
|
||||
test: copy
|
||||
test: copyselect
|
||||
test: constraints
|
||||
test: triggers
|
||||
test: create_misc
|
||||
|
||||
82
src/test/regress/sql/copyselect.sql
Normal file
82
src/test/regress/sql/copyselect.sql
Normal file
@ -0,0 +1,82 @@
|
||||
--
|
||||
-- Test cases for COPY (select) TO
|
||||
--
|
||||
create table test1 (id serial, t text);
|
||||
insert into test1 (t) values ('a');
|
||||
insert into test1 (t) values ('b');
|
||||
insert into test1 (t) values ('c');
|
||||
insert into test1 (t) values ('d');
|
||||
insert into test1 (t) values ('e');
|
||||
|
||||
create table test2 (id serial, t text);
|
||||
insert into test2 (t) values ('A');
|
||||
insert into test2 (t) values ('B');
|
||||
insert into test2 (t) values ('C');
|
||||
insert into test2 (t) values ('D');
|
||||
insert into test2 (t) values ('E');
|
||||
|
||||
create view v_test1
|
||||
as select 'v_'||t from test1;
|
||||
|
||||
--
|
||||
-- Test COPY table TO
|
||||
--
|
||||
copy test1 to stdout;
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy v_test1 to stdout;
|
||||
--
|
||||
-- Test COPY (select) TO
|
||||
--
|
||||
copy (select t from test1 where id=1) to stdout;
|
||||
--
|
||||
-- Test COPY (select for update) TO
|
||||
--
|
||||
copy (select t from test1 where id=3 for update) to stdout;
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy (select t into temp test3 from test1 where id=3) to stdout;
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy (select * from test1) from stdin;
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
copy (select * from test1) (t,id) to stdout;
|
||||
--
|
||||
-- Test JOIN
|
||||
--
|
||||
copy (select * from test1 join test2 using (id)) to stdout;
|
||||
--
|
||||
-- Test UNION SELECT
|
||||
--
|
||||
copy (select t from test1 where id = 1 UNION select * from v_test1) to stdout;
|
||||
--
|
||||
-- Test subselect
|
||||
--
|
||||
copy (select * from (select t from test1 where id = 1 UNION select * from v_test1) t1) to stdout;
|
||||
--
|
||||
-- Test headers, CSV and quotes
|
||||
--
|
||||
copy (select t from test1 where id = 1) to stdout csv header force quote t;
|
||||
--
|
||||
-- Test psql builtins, plain table
|
||||
--
|
||||
\copy test1 to stdout
|
||||
--
|
||||
-- This should fail
|
||||
--
|
||||
\copy v_test1 to stdout
|
||||
--
|
||||
-- Test \copy (select ...)
|
||||
--
|
||||
\copy (select "id",'id','id""'||t,(id + 1)*id,t,"test1"."t" from test1 where id=3) to stdout
|
||||
--
|
||||
-- Drop everything
|
||||
--
|
||||
drop table test2;
|
||||
drop view v_test1;
|
||||
drop table test1;
|
||||
Loading…
x
Reference in New Issue
Block a user