mirror of https://github.com/citusdata/citus.git
159 lines
4.9 KiB
PL/PgSQL
159 lines
4.9 KiB
PL/PgSQL
\c - - - :master_port
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CREATE TABLE the_table (a int, b int, z bigserial);
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SELECT create_distributed_table('the_table', 'a');
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SELECT 1 FROM master_add_node('localhost', :master_port, groupid => 0);
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CREATE TABLE reference_table (a int, b int, z bigserial);
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SELECT create_reference_table('reference_table');
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CREATE TABLE citus_local_table (a int, b int, z bigserial);
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SELECT citus_add_local_table_to_metadata('citus_local_table');
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CREATE TABLE local (a int, b int);
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\c - - - :follower_master_port
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-- inserts normally do not work on a standby coordinator
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INSERT INTO the_table (a, b, z) VALUES (1, 2, 2);
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INSERT INTO reference_table (a, b, z) VALUES (1, 2, 2);
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INSERT INTO citus_local_table (a, b, z) VALUES (1, 2, 2);
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-- We can allow DML on a writable standby coordinator.
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-- Note that it doesn't help to enable writes for citus local tables
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-- and coordinator replicated reference tables. This is because, the
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-- data is in the coordinator and will hit read-only tranaction checks
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-- on Postgres
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SET citus.writable_standby_coordinator TO on;
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INSERT INTO the_table (a, b, z) VALUES (1, 2, 2);
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SELECT * FROM the_table;
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INSERT INTO reference_table (a, b, z) VALUES (1, 2, 2);
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SELECT * FROM reference_table;
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INSERT INTO citus_local_table (a, b, z) VALUES (1, 2, 2);
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SELECT * FROM citus_local_table;
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UPDATE the_table SET z = 3 WHERE a = 1;
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UPDATE reference_table SET z = 3 WHERE a = 1;
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UPDATE citus_local_table SET z = 3 WHERE a = 1;
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SELECT * FROM the_table;
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SELECT * FROM reference_table;
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SELECT * FROM citus_local_table;
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DELETE FROM the_table WHERE a = 1;
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DELETE FROM reference_table WHERE a = 1;
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DELETE FROM citus_local_table WHERE a = 1;
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SELECT * FROM the_table;
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SELECT * FROM reference_table;
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SELECT * FROM citus_local_table;
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-- drawing from a sequence is not possible
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INSERT INTO the_table (a, b) VALUES (1, 2);
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INSERT INTO reference_table (a, b) VALUES (1, 2);
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INSERT INTO citus_local_table (a, b) VALUES (1, 2);
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-- 2PC is not possible
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INSERT INTO the_table (a, b, z) VALUES (2, 3, 4), (5, 6, 7);
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INSERT INTO reference_table (a, b, z) VALUES (2, 3, 4), (5, 6, 7);
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INSERT INTO citus_local_table (a, b, z) VALUES (2, 3, 4), (5, 6, 7);
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-- COPY is not possible in 2PC mode
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COPY the_table (a, b, z) FROM STDIN WITH CSV;
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10,10,10
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11,11,11
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\.
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COPY reference_table (a, b, z) FROM STDIN WITH CSV;
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10,10,10
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11,11,11
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\.
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COPY citus_local_table (a, b, z) FROM STDIN WITH CSV;
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10,10,10
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11,11,11
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\.
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-- 1PC is possible
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SET citus.multi_shard_commit_protocol TO '1pc';
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INSERT INTO the_table (a, b, z) VALUES (2, 3, 4), (5, 6, 7);
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SELECT * FROM the_table ORDER BY a;
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INSERT INTO reference_table (a, b, z) VALUES (2, 3, 4), (5, 6, 7);
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SELECT * FROM reference_table ORDER BY a;
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INSERT INTO citus_local_table (a, b, z) VALUES (2, 3, 4), (5, 6, 7);
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SELECT * FROM citus_local_table ORDER BY a;
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-- modifying CTEs are possible
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WITH del AS (DELETE FROM the_table RETURNING *)
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SELECT * FROM del ORDER BY a;
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WITH del AS (DELETE FROM reference_table RETURNING *)
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SELECT * FROM del ORDER BY a;
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WITH del AS (DELETE FROM citus_local_table RETURNING *)
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SELECT * FROM del ORDER BY a;
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-- COPY is possible in 1PC mode
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COPY the_table (a, b, z) FROM STDIN WITH CSV;
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10,10,10
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11,11,11
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\.
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COPY reference_table (a, b, z) FROM STDIN WITH CSV;
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10,10,10
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11,11,11
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\.
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COPY citus_local_table (a, b, z) FROM STDIN WITH CSV;
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10,10,10
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11,11,11
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\.
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SELECT * FROM the_table ORDER BY a;
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SELECT * FROM reference_table ORDER BY a;
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SELECT * FROM citus_local_table ORDER BY a;
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DELETE FROM the_table;
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DELETE FROM reference_table;
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DELETE FROM citus_local_table;
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-- DDL is not possible
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TRUNCATE the_table;
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TRUNCATE reference_table;
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TRUNCATE citus_local_table;
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ALTER TABLE the_table ADD COLUMN c int;
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ALTER TABLE reference_table ADD COLUMN c int;
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ALTER TABLE citus_local_table ADD COLUMN c int;
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-- rollback is possible
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BEGIN;
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INSERT INTO the_table (a, b, z) VALUES (1, 2, 2);
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ROLLBACK;
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BEGIN;
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INSERT INTO reference_table (a, b, z) VALUES (1, 2, 2);
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ROLLBACK;
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BEGIN;
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INSERT INTO citus_local_table (a, b, z) VALUES (1, 2, 2);
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ROLLBACK;
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SELECT * FROM the_table ORDER BY a;
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SELECT * FROM reference_table ORDER BY a;
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SELECT * FROM citus_local_table ORDER BY a;
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-- we should still disallow writes to local tables
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INSERT INTO local VALUES (1, 1);
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INSERT INTO local SELECT a, b FROM the_table;
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-- we shouldn't be able to create local tables
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CREATE TEMP TABLE local_copy_of_the_table AS SELECT * FROM the_table;
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\c "port=9070 dbname=regression options='-c\ citus.use_secondary_nodes=always\ -c\ citus.cluster_name=second-cluster'"
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-- separate follower formations currently cannot do writes
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SET citus.writable_standby_coordinator TO on;
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INSERT INTO the_table (a, b, z) VALUES (1, 2, 3);
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SELECT * FROM the_table ORDER BY a;
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INSERT INTO reference_table (a, b, z) VALUES (1, 2, 3);
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SELECT * FROM reference_table ORDER BY a;
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INSERT INTO citus_local_table (a, b, z) VALUES (1, 2, 3);
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SELECT * FROM citus_local_table ORDER BY a;
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\c -reuse-previous=off regression - - :master_port
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DROP TABLE the_table;
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DROP TABLE reference_table;
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DROP TABLE citus_local_table;
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SELECT master_remove_node('localhost', :master_port);
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