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Add CINE option for CREATE TABLE AS and CREATE MATERIALIZED VIEW

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Fabrízio de Royes Mello reviewed by Rushabh Lathia.
This commit is contained in:
Andrew Dunstan
2014-12-13 13:56:09 -05:00
parent e311cd6ded
commit e39b6f953e
11 changed files with 90 additions and 2 deletions
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17
src/backend/commands/createas.c
View File

@ -28,6 +28,7 @@
#include "access/sysattr.h"
#include "access/xact.h"
#include "access/xlog.h"
#include "catalog/namespace.h"
#include "catalog/toasting.h"
#include "commands/createas.h"
#include "commands/matview.h"
@ -86,6 +87,22 @@ ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
QueryDesc *queryDesc;
ScanDirection dir;
if (stmt->if_not_exists)
{
Oid nspid;
nspid = RangeVarGetCreationNamespace(stmt->into->rel);
if (get_relname_relid(stmt->into->rel->relname, nspid))
{
ereport(NOTICE,
(errcode(ERRCODE_DUPLICATE_TABLE),
errmsg("relation \"%s\" already exists, skipping",
stmt->into->rel->relname)));
return InvalidOid;
}
}
/*
* Create the tuple receiver object and insert info it will need
*/

1
src/backend/nodes/copyfuncs.c
View File

@ -3317,6 +3317,7 @@ _copyCreateTableAsStmt(const CreateTableAsStmt *from)
COPY_NODE_FIELD(into);
COPY_SCALAR_FIELD(relkind);
COPY_SCALAR_FIELD(is_select_into);
COPY_SCALAR_FIELD(if_not_exists);
return newnode;
}

1
src/backend/nodes/equalfuncs.c
View File

@ -1530,6 +1530,7 @@ _equalCreateTableAsStmt(const CreateTableAsStmt *a, const CreateTableAsStmt *b)
COMPARE_NODE_FIELD(into);
COMPARE_SCALAR_FIELD(relkind);
COMPARE_SCALAR_FIELD(is_select_into);
COMPARE_SCALAR_FIELD(if_not_exists);
return true;
}

28
src/backend/parser/gram.y
View File

@ -3401,11 +3401,25 @@ CreateAsStmt:
ctas->into = $4;
ctas->relkind = OBJECT_TABLE;
ctas->is_select_into = false;
ctas->if_not_exists = false;
/* cram additional flags into the IntoClause */
$4->rel->relpersistence = $2;
$4->skipData = !($7);
$$ = (Node *) ctas;
}
| CREATE OptTemp TABLE IF_P NOT EXISTS create_as_target AS SelectStmt opt_with_data
{
CreateTableAsStmt *ctas = makeNode(CreateTableAsStmt);
ctas->query = $9;
ctas->into = $7;
ctas->relkind = OBJECT_TABLE;
ctas->is_select_into = false;
ctas->if_not_exists = true;
/* cram additional flags into the IntoClause */
$7->rel->relpersistence = $2;
$7->skipData = !($10);
$$ = (Node *) ctas;
}
;
create_as_target:
@ -3444,11 +3458,25 @@ CreateMatViewStmt:
ctas->into = $5;
ctas->relkind = OBJECT_MATVIEW;
ctas->is_select_into = false;
ctas->if_not_exists = false;
/* cram additional flags into the IntoClause */
$5->rel->relpersistence = $2;
$5->skipData = !($8);
$$ = (Node *) ctas;
}
| CREATE OptNoLog MATERIALIZED VIEW IF_P NOT EXISTS create_mv_target AS SelectStmt opt_with_data
{
CreateTableAsStmt *ctas = makeNode(CreateTableAsStmt);
ctas->query = $10;
ctas->into = $8;
ctas->relkind = OBJECT_MATVIEW;
ctas->is_select_into = false;
ctas->if_not_exists = true;
/* cram additional flags into the IntoClause */
$8->rel->relpersistence = $2;
$8->skipData = !($11);
$$ = (Node *) ctas;
}
;
create_mv_target: