mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-01-08 06:12:55 +00:00
ab22bbac84
* feat: impl drop view * fix: metric name * fix: comments * test: add DropViewProcedure test * test: drop view meets a table * test: update sqlness tests by drop view * feat: apply suggestion from AI * chore: apply suggestion Co-authored-by: Jeremyhi <jiachun_feng@proton.me> * chore: apply suggestion Co-authored-by: Jeremyhi <jiachun_feng@proton.me> * chore: apply suggestion Co-authored-by: Jeremyhi <jiachun_feng@proton.me> * fix: TYPE_NAME for DropFlowProcedure --------- Co-authored-by: Jeremyhi <jiachun_feng@proton.me>
133 lines
3.3 KiB
Plaintext
133 lines
3.3 KiB
Plaintext
CREATE TABLE t1(a INT, b STRING, c TIMESTAMP TIME INDEX);
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Affected Rows: 0
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INSERT INTO t1 VALUES (41, "hello", 1), (42, "world", 2), (43, "greptime", 3);
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Affected Rows: 3
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CREATE VIEW v1 AS SELECT a, b FROM t1;
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Affected Rows: 0
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SELECT * FROM v1;
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+----+----------+
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| a | b |
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+----+----------+
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| 41 | hello |
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| 42 | world |
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| 43 | greptime |
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+----+----------+
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SELECT a FROM v1;
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+----+
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| a |
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+----+
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| 41 |
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| 42 |
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| 43 |
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+----+
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INSERT INTO t1 VALUES (44, "greptimedb", 4);
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Affected Rows: 1
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SELECT * FROM v1;
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+----+------------+
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| a | b |
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+----+------------+
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| 41 | hello |
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| 42 | world |
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| 43 | greptime |
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| 44 | greptimedb |
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+----+------------+
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SHOW CREATE VIEW v1;
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+------+---------------------------------------+
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| View | Create View |
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+------+---------------------------------------+
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| v1 | CREATE VIEW v1 AS SELECT a, b FROM t1 |
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+------+---------------------------------------+
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CREATE OR REPLACE VIEW v1 AS SELECT a, b, c FROM t1 WHERE a > 43;
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Affected Rows: 0
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SHOW CREATE VIEW v1;
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+------+------------------------------------------------------------------+
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| View | Create View |
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+------+------------------------------------------------------------------+
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| v1 | CREATE OR REPLACE VIEW v1 AS SELECT a, b, c FROM t1 WHERE a > 43 |
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+------+------------------------------------------------------------------+
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SELECT * FROM v1;
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+----+------------+-------------------------+
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| a | b | c |
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+----+------------+-------------------------+
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| 44 | greptimedb | 1970-01-01T00:00:00.004 |
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+----+------------+-------------------------+
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--- if not exists, so it doesn't change at all ---
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CREATE VIEW IF NOT EXISTS v1 AS SELECT c FROM t1;
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Affected Rows: 0
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SHOW CREATE VIEW v1;
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+------+------------------------------------------------------------------+
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| View | Create View |
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+------+------------------------------------------------------------------+
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| v1 | CREATE OR REPLACE VIEW v1 AS SELECT a, b, c FROM t1 WHERE a > 43 |
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+------+------------------------------------------------------------------+
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SELECT * FROM v1;
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+----+------------+-------------------------+
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| a | b | c |
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+----+------------+-------------------------+
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| 44 | greptimedb | 1970-01-01T00:00:00.004 |
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+----+------------+-------------------------+
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--- if not exists with replace, so it changes ---
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CREATE OR REPLACE VIEW IF NOT EXISTS v1 AS SELECT c FROM t1;
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Affected Rows: 0
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SHOW CREATE VIEW v1;
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+------+-------------------------------------------------------------+
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| View | Create View |
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+------+-------------------------------------------------------------+
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| v1 | CREATE OR REPLACE VIEW IF NOT EXISTS v1 AS SELECT c FROM t1 |
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+------+-------------------------------------------------------------+
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SELECT * FROM v1;
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+-------------------------+
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| c |
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+-------------------------+
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| 1970-01-01T00:00:00.001 |
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| 1970-01-01T00:00:00.002 |
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| 1970-01-01T00:00:00.003 |
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| 1970-01-01T00:00:00.004 |
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+-------------------------+
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DROP VIEW v1;
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Affected Rows: 0
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DROP TABLE t1;
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Affected Rows: 0
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SHOW CREATE VIEW v1;
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Error: 4001(TableNotFound), View not found: v1
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