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https://github.com/MariaDB/server.git
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ebfc4e6ad0
copy of
commit 86587affafe77ef555f7c3839839de44f0f203f3
Author: Tian Xia <tianx@fb.com>
Date: Tue Oct 4 10:01:52 2016 -0700
Allow filtering of show commands through admission control
166 lines
2.4 KiB
Text
166 lines
2.4 KiB
Text
DROP TABLE IF EXISTS t1,t2;
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CREATE TABLE t1 (a INT, b CHAR(8), pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=rocksdb;
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INSERT INTO t1 (a,b) VALUES (10000,'foobar'),(1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e');
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INSERT INTO t1 (a,b) SELECT a, b FROM t1;
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DELETE FROM t1 WHERE b IN ('c');
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SELECT a,b FROM t1;
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a b
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1 a
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1 a
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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4 d
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5 e
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5 e
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DELETE FROM t1 WHERE a < 0 OR b = 'a';
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SELECT a,b FROM t1;
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a b
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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4 d
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5 e
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5 e
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DELETE FROM t1 WHERE a <= 4 ORDER BY b DESC LIMIT 1;
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SELECT a,b FROM t1;
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a b
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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5 e
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5 e
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CREATE TABLE t2 (c CHAR(8), d INT, pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=rocksdb;
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INSERT INTO t2 (c,d) SELECT b, a FROM t1;
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SELECT c,d FROM t2;
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c d
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b 2
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b 2
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d 4
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e 5
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e 5
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foobar 10000
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foobar 10000
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DELETE t2.* FROM t1, t2 WHERE c < b AND a + d != 1;
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SELECT a,b FROM t1;
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a b
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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5 e
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5 e
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SELECT c,d FROM t2;
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c d
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foobar 10000
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foobar 10000
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DELETE FROM t2, t1.* USING t2, t1 WHERE c = 'foobar' and b = c;
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SELECT a,b FROM t1;
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a b
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2 b
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2 b
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4 d
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5 e
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5 e
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SELECT c,d FROM t2;
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c d
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DELETE FROM t1;
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SELECT a,b FROM t1;
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a b
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DROP TABLE t1, t2;
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CREATE TABLE t1 (a INT, b CHAR(8), pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=rocksdb;
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INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e'),(6,'f'),(7,'g'),(8,'h'),(10000,'foobar');
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INSERT INTO t1 (a,b) SELECT a, b FROM t1;
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BEGIN;
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DELETE FROM t1 WHERE b IN ('c');
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SELECT a,b FROM t1;
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a b
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1 a
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1 a
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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4 d
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5 e
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5 e
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6 f
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6 f
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7 g
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7 g
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8 h
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8 h
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DELETE FROM t1 WHERE a < 0 OR b = 'a';
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COMMIT;
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SELECT a,b FROM t1;
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a b
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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4 d
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5 e
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5 e
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6 f
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6 f
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7 g
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7 g
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8 h
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8 h
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BEGIN;
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DELETE FROM t1 WHERE a <= 4 ORDER BY b DESC LIMIT 1;
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SAVEPOINT spt1;
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DELETE FROM t1;
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RELEASE SAVEPOINT spt1;
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ROLLBACK;
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SELECT a,b FROM t1;
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a b
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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4 d
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5 e
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5 e
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6 f
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6 f
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7 g
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7 g
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8 h
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8 h
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BEGIN;
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DELETE FROM t1 WHERE a <= 4 ORDER BY b DESC LIMIT 1;
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SAVEPOINT spt1;
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DELETE FROM t1;
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INSERT INTO t1 (a,b) VALUES (1,'a');
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ROLLBACK TO SAVEPOINT spt1;
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ERROR HY000: MyRocks currently does not support ROLLBACK TO SAVEPOINT if modifying rows.
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COMMIT;
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ERROR HY000: This transaction was rolled back and cannot be committed. Only supported operation is to roll it back, so all pending changes will be discarded. Please restart another transaction.
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SELECT a,b FROM t1;
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a b
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10000 foobar
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10000 foobar
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2 b
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2 b
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4 d
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4 d
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5 e
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5 e
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6 f
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6 f
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7 g
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7 g
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8 h
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8 h
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DROP TABLE t1;
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