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953346c18b
Previously, when issued on hypertable, database maintenance commands, like VACUUM and REINDEX, only affected the main table and did not recurse to chunks. This change fixes that issue, allowing database maintainers to issue single commands on hypertables that affect all the data stored in the hypertable. These commands (VACUUM, REINDEX) only work at the table level for hypertables. If issued at other levels, e.g., schema, or database, the behavior is the same as in standard PostgreSQL as all tables are covered by default. REINDEX commands that specify a hypertable index do not recurse as that requires mapping the hypertable index to the corresponding index on the chunk. This might be fixed in a future update.
40 lines
1.5 KiB
SQL
40 lines
1.5 KiB
SQL
\ir include/create_single_db.sql
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CREATE TABLE reindex_test(time timestamp, temp float);
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CREATE UNIQUE INDEX reindex_test_time_unique_idx ON reindex_test(time);
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-- create hypertable with three chunks
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SELECT create_hypertable('reindex_test', 'time', chunk_time_interval => 2628000000000);
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INSERT INTO reindex_test VALUES ('2017-01-20T09:00:01', 17.5),
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('2017-01-21T09:00:01', 19.1),
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('2017-04-20T09:00:01', 89.5),
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('2017-04-21T09:00:01', 17.1),
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('2017-06-20T09:00:01', 18.5),
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('2017-06-21T09:00:01', 11.0);
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\d+ reindex_test
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-- show reindexing
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REINDEX (VERBOSE) TABLE reindex_test;
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\set ON_ERROR_STOP 0
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-- this one currently doesn't recurse to chunks and instead gives an
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-- error
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REINDEX (VERBOSE) INDEX reindex_test_time_unique_idx;
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\set ON_ERROR_STOP 1
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-- show reindexing on a normal table
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CREATE TABLE reindex_norm(time timestamp, temp float);
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CREATE UNIQUE INDEX reindex_norm_time_unique_idx ON reindex_norm(time);
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INSERT INTO reindex_norm VALUES ('2017-01-20T09:00:01', 17.5),
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('2017-01-21T09:00:01', 19.1),
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('2017-04-20T09:00:01', 89.5),
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('2017-04-21T09:00:01', 17.1),
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('2017-06-20T09:00:01', 18.5),
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('2017-06-21T09:00:01', 11.0);
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REINDEX (VERBOSE) TABLE reindex_norm;
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REINDEX (VERBOSE) INDEX reindex_norm_time_unique_idx;
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