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Add the ability to create indexes 'concurrently', that is, without

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blocking concurrent writes to the table.  Greg Stark, with a little help
from Tom Lane.
This commit is contained in:
Tom Lane
2006-08-25 04:06:58 +00:00
parent 8f91e2b607
commit e093dcdd28
34 changed files with 1025 additions and 138 deletions
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3
src/backend/parser/analyze.c
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@ -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 1.347 2006/08/21 00:57:24 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.348 2006/08/25 04:06:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1488,6 +1488,7 @@ transformIndexConstraints(ParseState *pstate, CreateStmtContext *cxt)
index->tableSpace = constraint->indexspace;
index->indexParams = NIL;
index->whereClause = NULL;
index->concurrent = false;
/*
* Make sure referenced keys exist. If we are making a PRIMARY KEY

36
src/backend/parser/gram.y
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.557 2006/08/21 00:57:25 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.558 2006/08/25 04:06:51 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -364,7 +364,8 @@ static void doNegateFloat(Value *v);
CACHE CALLED CASCADE CASCADED CASE CAST CHAIN CHAR_P
CHARACTER CHARACTERISTICS CHECK CHECKPOINT CLASS CLOSE
CLUSTER COALESCE COLLATE COLUMN COMMENT COMMIT
COMMITTED CONNECTION CONSTRAINT CONSTRAINTS CONVERSION_P CONVERT COPY CREATE CREATEDB
COMMITTED CONCURRENTLY CONNECTION CONSTRAINT CONSTRAINTS
CONVERSION_P CONVERT COPY CREATE CREATEDB
CREATEROLE CREATEUSER CROSS CSV CURRENT_DATE CURRENT_ROLE CURRENT_TIME
CURRENT_TIMESTAMP CURRENT_USER CURSOR CYCLE
@ -3638,20 +3639,22 @@ opt_granted_by: GRANTED BY RoleId { $$ = $3; }
/*****************************************************************************
*
* QUERY:
* create index <indexname> on <relname>
* [ using <access> ] "(" ( <col> [ using <opclass> ] )+ ")"
* [ tablespace <tablespacename> ] [ where <predicate> ]
* QUERY: CREATE INDEX
*
* Note: we can't factor CONCURRENTLY into a separate production without
* making it a reserved word.
*
* Note: we cannot put TABLESPACE clause after WHERE clause unless we are
* willing to make TABLESPACE a fully reserved word.
*****************************************************************************/
IndexStmt: CREATE index_opt_unique INDEX index_name ON qualified_name
access_method_clause '(' index_params ')' opt_definition OptTableSpace where_clause
IndexStmt: CREATE index_opt_unique INDEX index_name
ON qualified_name access_method_clause '(' index_params ')'
opt_definition OptTableSpace where_clause
{
IndexStmt *n = makeNode(IndexStmt);
n->unique = $2;
n->concurrent = false;
n->idxname = $4;
n->relation = $6;
n->accessMethod = $7;
@ -3661,6 +3664,22 @@ IndexStmt: CREATE index_opt_unique INDEX index_name ON qualified_name
n->whereClause = $13;
$$ = (Node *)n;
}
| CREATE index_opt_unique INDEX CONCURRENTLY index_name
ON qualified_name access_method_clause '(' index_params ')'
opt_definition OptTableSpace where_clause
{
IndexStmt *n = makeNode(IndexStmt);
n->unique = $2;
n->concurrent = true;
n->idxname = $5;
n->relation = $7;
n->accessMethod = $8;
n->indexParams = $10;
n->options = $12;
n->tableSpace = $13;
n->whereClause = $14;
$$ = (Node *)n;
}
;
index_opt_unique:
@ -8491,6 +8510,7 @@ unreserved_keyword:
| COMMENT
| COMMIT
| COMMITTED
| CONCURRENTLY
| CONNECTION
| CONSTRAINTS
| CONVERSION_P

3
src/backend/parser/keywords.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.175 2006/08/12 02:52:05 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.176 2006/08/25 04:06:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -84,6 +84,7 @@ static const ScanKeyword ScanKeywords[] = {
{"comment", COMMENT},
{"commit", COMMIT},
{"committed", COMMITTED},
{"concurrently", CONCURRENTLY},
{"connection", CONNECTION},
{"constraint", CONSTRAINT},
{"constraints", CONSTRAINTS},