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Add GENERATED column support on distributed hypertables
Add support for deparsing `GENERATED` columns when creating distributed hypertables, including support for generating values "on-the-fly" when a `RETURNING` clause is used with an `INSERT` statement. Previously, using generated columns on a hypertable led to errors or had unpredictible results.
This commit is contained in:
Erik Nordström
Erik Nordström
parent
490e940587
commit
422440a2de
@ -195,7 +195,14 @@ deparse_columns(StringInfo stmt, Relation rel)
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CStringGetTextDatum(attr_def.adbin),
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ObjectIdGetDatum(rel->rd_id)));
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appendStringInfo(stmt, " DEFAULT %s", attr_default);
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#if PG12_GE
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if (attr->attgenerated == ATTRIBUTE_GENERATED_STORED)
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appendStringInfo(stmt, " GENERATED ALWAYS AS %s STORED", attr_default);
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else
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#endif
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{
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appendStringInfo(stmt, " DEFAULT %s", attr_default);
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}
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break;
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}
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}
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@ -11,6 +11,7 @@
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#include <nodes/nodeFuncs.h>
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#include <nodes/plannodes.h>
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#include <executor/executor.h>
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#include <executor/nodeModifyTable.h>
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#include <utils/lsyscache.h>
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#include <utils/builtins.h>
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#include <utils/hsearch.h>
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@ -706,6 +707,19 @@ handle_read(DataNodeDispatchState *sds)
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ListCell *lc;
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bool primary_data_node = true;
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MemoryContext oldcontext;
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#if PG12_GE
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TupleDesc rri_desc = RelationGetDescr(rri->ri_RelationDesc);
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if (NULL != rri->ri_projectReturning && rri_desc->constr &&
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rri_desc->constr->has_generated_stored)
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ExecComputeStoredGenerated(estate,
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slot
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#if PG13_GE
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,
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CMD_INSERT
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#endif
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);
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#endif /* PG12_GE */
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Assert(NULL != cis);
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@ -1063,8 +1077,14 @@ get_insert_attrs(Relation rel)
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{
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Form_pg_attribute attr = TupleDescAttr(tupdesc, i);
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if (!attr->attisdropped)
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attrs = lappend_int(attrs, AttrOffsetGetAttrNumber(i));
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if (attr->attisdropped
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#if PG12_GE
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|| attr->attgenerated != '\0'
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#endif
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)
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continue;
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attrs = lappend_int(attrs, AttrOffsetGetAttrNumber(i));
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}
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return attrs;
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@ -1,133 +0,0 @@
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-- This file and its contents are licensed under the Timescale License.
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-- Please see the included NOTICE for copyright information and
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-- LICENSE-TIMESCALE for a copy of the license.
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-- Need to be super user to create extension and add data nodes
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\c :TEST_DBNAME :ROLE_CLUSTER_SUPERUSER;
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\unset ECHO
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psql:include/remote_exec.sql:5: NOTICE: schema "test" already exists, skipping
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\set DN_DBNAME_1 :TEST_DBNAME _1
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\set DN_DBNAME_2 :TEST_DBNAME _2
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\set DN_DBNAME_3 :TEST_DBNAME _3
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-- Add data nodes using the TimescaleDB node management API
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SELECT * FROM add_data_node('data_node_1', host => 'localhost', database => :'DN_DBNAME_1');
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node_name | host | port | database | node_created | database_created | extension_created
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-------------+-----------+-------+-------------------------+--------------+------------------+-------------------
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data_node_1 | localhost | 55432 | db_dist_hypertable_am_1 | t | t | t
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(1 row)
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SELECT * FROM add_data_node('data_node_2', host => 'localhost', database => :'DN_DBNAME_2');
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node_name | host | port | database | node_created | database_created | extension_created
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-------------+-----------+-------+-------------------------+--------------+------------------+-------------------
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data_node_2 | localhost | 55432 | db_dist_hypertable_am_2 | t | t | t
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(1 row)
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SELECT * FROM add_data_node('data_node_3', host => 'localhost', database => :'DN_DBNAME_3');
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node_name | host | port | database | node_created | database_created | extension_created
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-------------+-----------+-------+-------------------------+--------------+------------------+-------------------
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data_node_3 | localhost | 55432 | db_dist_hypertable_am_3 | t | t | t
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(1 row)
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GRANT USAGE ON FOREIGN SERVER data_node_1, data_node_2, data_node_3 TO PUBLIC;
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-- Create a new table access method by reusing heap handler
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler;
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SELECT * FROM test.remote_exec('{ data_node_1, data_node_2, data_node_3 }', $$
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler;
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$$);
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NOTICE: [data_node_1]:
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler
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NOTICE: [data_node_2]:
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler
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NOTICE: [data_node_3]:
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler
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remote_exec
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-------------
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(1 row)
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-- Create distributed hypertable using non-default access method
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CREATE TABLE disttable(time timestamptz NOT NULL, device int) USING test_am;
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SELECT * FROM create_distributed_hypertable('disttable', 'time', 'device', 3);
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hypertable_id | schema_name | table_name | created
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---------------+-------------+------------+---------
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1 | public | disttable | t
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(1 row)
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-- Make sure that distributed hypertable created on data nodes is
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-- using the correct table access method
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SELECT * FROM test.remote_exec('{ data_node_1, data_node_2, data_node_3 }', $$
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid;
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$$);
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NOTICE: [data_node_1]:
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid
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NOTICE: [data_node_1]:
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hypertable_amname
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-----------------
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test_am
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(1 row)
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NOTICE: [data_node_2]:
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid
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NOTICE: [data_node_2]:
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hypertable_amname
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-----------------
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test_am
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(1 row)
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NOTICE: [data_node_3]:
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid
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NOTICE: [data_node_3]:
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hypertable_amname
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-----------------
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test_am
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(1 row)
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remote_exec
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-------------
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(1 row)
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-- Check that basic operations are working as expected
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INSERT INTO disttable VALUES
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('2017-01-01 06:01', 1),
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('2017-01-01 09:11', 3),
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('2017-01-01 08:01', 1),
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('2017-01-02 08:01', 2),
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('2018-07-02 08:01', 87),
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('2018-07-01 06:01', 13),
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('2018-07-01 09:11', 90),
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('2018-07-01 08:01', 29);
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SELECT * FROM disttable ORDER BY time;
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time | device
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------------------------------+--------
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Sun Jan 01 06:01:00 2017 PST | 1
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Sun Jan 01 08:01:00 2017 PST | 1
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Sun Jan 01 09:11:00 2017 PST | 3
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Mon Jan 02 08:01:00 2017 PST | 2
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Sun Jul 01 06:01:00 2018 PDT | 13
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Sun Jul 01 08:01:00 2018 PDT | 29
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Sun Jul 01 09:11:00 2018 PDT | 90
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Mon Jul 02 08:01:00 2018 PDT | 87
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(8 rows)
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DROP DATABASE :DN_DBNAME_1;
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DROP DATABASE :DN_DBNAME_2;
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DROP DATABASE :DN_DBNAME_3;
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193
tsl/test/expected/dist_hypertable_pg12.out
Normal file
193
tsl/test/expected/dist_hypertable_pg12.out
Normal file
@ -0,0 +1,193 @@
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-- This file and its contents are licensed under the Timescale License.
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-- Please see the included NOTICE for copyright information and
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-- LICENSE-TIMESCALE for a copy of the license.
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-- Tests using features supported in PG12 and greater.
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-- Need to be super user to create extension and add data nodes
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\c :TEST_DBNAME :ROLE_CLUSTER_SUPERUSER;
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\unset ECHO
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psql:include/remote_exec.sql:5: NOTICE: schema "test" already exists, skipping
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\set DN_DBNAME_1 :TEST_DBNAME _1
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\set DN_DBNAME_2 :TEST_DBNAME _2
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\set DN_DBNAME_3 :TEST_DBNAME _3
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-- Add data nodes using the TimescaleDB node management API
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SELECT * FROM add_data_node('data_node_1', host => 'localhost', database => :'DN_DBNAME_1');
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node_name | host | port | database | node_created | database_created | extension_created
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-------------+-----------+-------+---------------------------+--------------+------------------+-------------------
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data_node_1 | localhost | 55432 | db_dist_hypertable_pg12_1 | t | t | t
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(1 row)
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SELECT * FROM add_data_node('data_node_2', host => 'localhost', database => :'DN_DBNAME_2');
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node_name | host | port | database | node_created | database_created | extension_created
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-------------+-----------+-------+---------------------------+--------------+------------------+-------------------
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data_node_2 | localhost | 55432 | db_dist_hypertable_pg12_2 | t | t | t
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(1 row)
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SELECT * FROM add_data_node('data_node_3', host => 'localhost', database => :'DN_DBNAME_3');
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node_name | host | port | database | node_created | database_created | extension_created
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-------------+-----------+-------+---------------------------+--------------+------------------+-------------------
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data_node_3 | localhost | 55432 | db_dist_hypertable_pg12_3 | t | t | t
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(1 row)
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GRANT USAGE ON FOREIGN SERVER data_node_1, data_node_2, data_node_3 TO PUBLIC;
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-- Create a new table access method by reusing heap handler
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler;
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SELECT * FROM test.remote_exec('{ data_node_1, data_node_2, data_node_3 }', $$
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler;
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$$);
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NOTICE: [data_node_1]:
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler
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NOTICE: [data_node_2]:
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler
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NOTICE: [data_node_3]:
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CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler
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remote_exec
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-------------
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(1 row)
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-- Create distributed hypertable using non-default access method
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CREATE TABLE disttable(time timestamptz NOT NULL, device int, temp_c float, temp_f float GENERATED ALWAYS AS (temp_c * 9 / 5 + 32) STORED) USING test_am;
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SELECT * FROM create_distributed_hypertable('disttable', 'time', 'device', 3);
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hypertable_id | schema_name | table_name | created
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---------------+-------------+------------+---------
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1 | public | disttable | t
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(1 row)
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-- Make sure that distributed hypertable created on data nodes is
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-- using the correct table access method
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SELECT * FROM test.remote_exec('{ data_node_1, data_node_2, data_node_3 }', $$
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid;
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$$);
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NOTICE: [data_node_1]:
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid
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NOTICE: [data_node_1]:
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hypertable_amname
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-----------------
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test_am
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(1 row)
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NOTICE: [data_node_2]:
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid
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NOTICE: [data_node_2]:
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hypertable_amname
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-----------------
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test_am
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(1 row)
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NOTICE: [data_node_3]:
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SELECT amname AS hypertable_amname
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FROM pg_class cl, pg_am am
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WHERE cl.oid = 'disttable'::regclass
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AND cl.relam = am.oid
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NOTICE: [data_node_3]:
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hypertable_amname
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-----------------
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test_am
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(1 row)
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remote_exec
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-------------
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(1 row)
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-- Check that basic operations are working as expected
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INSERT INTO disttable VALUES
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('2017-01-01 06:01', 1, -10.0),
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('2017-01-01 09:11', 3, -5.0),
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('2017-01-01 08:01', 1, 1.0),
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('2017-01-02 08:01', 2, 5.0),
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('2018-07-02 08:01', 87, 10.0),
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('2018-07-01 06:01', 13, 15.0),
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('2018-07-01 09:11', 90, 20.0),
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('2018-07-01 08:01', 29, 24.0);
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SELECT * FROM disttable ORDER BY time;
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time | device | temp_c | temp_f
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------------------------------+--------+--------+--------
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Sun Jan 01 06:01:00 2017 PST | 1 | -10 | 14
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Sun Jan 01 08:01:00 2017 PST | 1 | 1 | 33.8
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Sun Jan 01 09:11:00 2017 PST | 3 | -5 | 23
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Mon Jan 02 08:01:00 2017 PST | 2 | 5 | 41
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Sun Jul 01 06:01:00 2018 PDT | 13 | 15 | 59
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Sun Jul 01 08:01:00 2018 PDT | 29 | 24 | 75.2
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Sun Jul 01 09:11:00 2018 PDT | 90 | 20 | 68
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Mon Jul 02 08:01:00 2018 PDT | 87 | 10 | 50
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(8 rows)
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-- Show that GENERATED columns work for INSERT with RETURNING clause
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TRUNCATE disttable;
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EXPLAIN VERBOSE
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INSERT INTO disttable VALUES ('2017-08-01 06:01', 1, 35.0) RETURNING *;
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QUERY PLAN
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Custom Scan (HypertableInsert) (cost=0.00..0.01 rows=1 width=28)
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Output: disttable."time", disttable.device, disttable.temp_c, disttable.temp_f
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Insert on distributed hypertable public.disttable
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Data nodes: data_node_1, data_node_2, data_node_3
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-> Insert on public.disttable (cost=0.00..0.01 rows=1 width=28)
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Output: disttable."time", disttable.device, disttable.temp_c, disttable.temp_f
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-> Custom Scan (DataNodeDispatch) (cost=0.00..0.01 rows=1 width=28)
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Output: 'Tue Aug 01 06:01:00 2017 PDT'::timestamp with time zone, 1, '35'::double precision, NULL::double precision
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Batch size: 1000
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Remote SQL: INSERT INTO public.disttable("time", device, temp_c) VALUES ($1, $2, $3), ..., ($2998, $2999, $3000) RETURNING "time", device, temp_c, temp_f
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-> Custom Scan (ChunkDispatch) (cost=0.00..0.01 rows=1 width=28)
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Output: 'Tue Aug 01 06:01:00 2017 PDT'::timestamp with time zone, 1, '35'::double precision, NULL::double precision
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-> Result (cost=0.00..0.01 rows=1 width=28)
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Output: 'Tue Aug 01 06:01:00 2017 PDT'::timestamp with time zone, 1, '35'::double precision, NULL::double precision
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(14 rows)
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INSERT INTO disttable VALUES ('2017-08-01 06:01', 1, 35.0) RETURNING *;
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time | device | temp_c | temp_f
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------------------------------+--------+--------+--------
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Tue Aug 01 06:01:00 2017 PDT | 1 | 35 | 95
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(1 row)
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-- Same values returned with SELECT:
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SELECT * FROM disttable ORDER BY 1;
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time | device | temp_c | temp_f
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------------------------------+--------+--------+--------
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Tue Aug 01 06:01:00 2017 PDT | 1 | 35 | 95
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(1 row)
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UPDATE disttable SET temp_c=40.0 WHERE device=1;
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SELECT * FROM disttable ORDER BY 1;
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time | device | temp_c | temp_f
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------------------------------+--------+--------+--------
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Tue Aug 01 06:01:00 2017 PDT | 1 | 40 | 104
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(1 row)
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-- Insert another value
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INSERT INTO disttable VALUES ('2017-09-01 06:01', 2, 30.0);
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SELECT * FROM disttable ORDER BY 1;
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time | device | temp_c | temp_f
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------------------------------+--------+--------+--------
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Tue Aug 01 06:01:00 2017 PDT | 1 | 40 | 104
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Fri Sep 01 06:01:00 2017 PDT | 2 | 30 | 86
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(2 rows)
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-- Delete a value based on the generated column
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DELETE FROM disttable WHERE temp_f=104;
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SELECT * FROM disttable ORDER BY 1;
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time | device | temp_c | temp_f
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------------------------------+--------+--------+--------
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Fri Sep 01 06:01:00 2017 PDT | 2 | 30 | 86
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(1 row)
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DROP DATABASE :DN_DBNAME_1;
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DROP DATABASE :DN_DBNAME_2;
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DROP DATABASE :DN_DBNAME_3;
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@ -105,7 +105,7 @@ endif()
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if (${PG_VERSION_MAJOR} GREATER_EQUAL "12")
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list(APPEND TEST_FILES_DEBUG
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dist_hypertable_am.sql
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dist_hypertable_pg12.sql
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continuous_aggs_tableam.sql
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)
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endif()
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@ -2,6 +2,7 @@
|
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-- Please see the included NOTICE for copyright information and
|
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-- LICENSE-TIMESCALE for a copy of the license.
|
||||
|
||||
-- Tests using features supported in PG12 and greater.
|
||||
-- Need to be super user to create extension and add data nodes
|
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\c :TEST_DBNAME :ROLE_CLUSTER_SUPERUSER;
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@ -29,7 +30,7 @@ CREATE ACCESS METHOD test_am TYPE TABLE HANDLER heap_tableam_handler;
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$$);
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-- Create distributed hypertable using non-default access method
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CREATE TABLE disttable(time timestamptz NOT NULL, device int) USING test_am;
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CREATE TABLE disttable(time timestamptz NOT NULL, device int, temp_c float, temp_f float GENERATED ALWAYS AS (temp_c * 9 / 5 + 32) STORED) USING test_am;
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SELECT * FROM create_distributed_hypertable('disttable', 'time', 'device', 3);
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-- Make sure that distributed hypertable created on data nodes is
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@ -44,17 +45,36 @@ $$);
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||||
|
||||
-- Check that basic operations are working as expected
|
||||
INSERT INTO disttable VALUES
|
||||
('2017-01-01 06:01', 1),
|
||||
('2017-01-01 09:11', 3),
|
||||
('2017-01-01 08:01', 1),
|
||||
('2017-01-02 08:01', 2),
|
||||
('2018-07-02 08:01', 87),
|
||||
('2018-07-01 06:01', 13),
|
||||
('2018-07-01 09:11', 90),
|
||||
('2018-07-01 08:01', 29);
|
||||
('2017-01-01 06:01', 1, -10.0),
|
||||
('2017-01-01 09:11', 3, -5.0),
|
||||
('2017-01-01 08:01', 1, 1.0),
|
||||
('2017-01-02 08:01', 2, 5.0),
|
||||
('2018-07-02 08:01', 87, 10.0),
|
||||
('2018-07-01 06:01', 13, 15.0),
|
||||
('2018-07-01 09:11', 90, 20.0),
|
||||
('2018-07-01 08:01', 29, 24.0);
|
||||
|
||||
SELECT * FROM disttable ORDER BY time;
|
||||
|
||||
-- Show that GENERATED columns work for INSERT with RETURNING clause
|
||||
TRUNCATE disttable;
|
||||
EXPLAIN VERBOSE
|
||||
INSERT INTO disttable VALUES ('2017-08-01 06:01', 1, 35.0) RETURNING *;
|
||||
INSERT INTO disttable VALUES ('2017-08-01 06:01', 1, 35.0) RETURNING *;
|
||||
|
||||
-- Same values returned with SELECT:
|
||||
SELECT * FROM disttable ORDER BY 1;
|
||||
|
||||
UPDATE disttable SET temp_c=40.0 WHERE device=1;
|
||||
SELECT * FROM disttable ORDER BY 1;
|
||||
|
||||
-- Insert another value
|
||||
INSERT INTO disttable VALUES ('2017-09-01 06:01', 2, 30.0);
|
||||
SELECT * FROM disttable ORDER BY 1;
|
||||
-- Delete a value based on the generated column
|
||||
DELETE FROM disttable WHERE temp_f=104;
|
||||
SELECT * FROM disttable ORDER BY 1;
|
||||
|
||||
DROP DATABASE :DN_DBNAME_1;
|
||||
DROP DATABASE :DN_DBNAME_2;
|
||||
DROP DATABASE :DN_DBNAME_3;
|
||||
Loading…
x
Reference in New Issue
Block a user