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1
by brian
clean slate |
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DROP TABLE IF EXISTS t1,t2,t3;
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CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB;
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CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id, id),
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FOREIGN KEY (t1_id) REFERENCES t1(id) ON DELETE CASCADE,
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FOREIGN KEY (t1_id) REFERENCES t1(id) ON UPDATE CASCADE) ENGINE=INNODB;
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CREATE TABLE t3 (id INT PRIMARY KEY, t2_id INT, INDEX par_ind (t2_id),
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FOREIGN KEY (id, t2_id) REFERENCES t2(t1_id, id) ON DELETE CASCADE) ENGINE=INNODB;
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1273.19.6
by Brian Aker
This remove the original info_schema system for the server. More still to |
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select * from data_dictionary.indexes where TABLE_SCHEMA= "test";
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1309.4.4
by Brian Aker
Column changing. |
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TABLE_SCHEMA TABLE_NAME INDEX_NAME IS_USED_IN_PRIMARY IS_UNIQUE IS_NULLABLE KEY_LENGTH INDEX_TYPE INDEX_COMMENT
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1732.3.1
by Monty Taylor
Subtract one - and then remove the extra binary character. This will keep |
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test t1 PRIMARY YES YES NO 4 UNKNOWN NULL
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test t2 PRIMARY YES YES NO 4 UNKNOWN NULL
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test t2 par_ind NO NO YES 8 UNKNOWN NULL
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test t3 PRIMARY YES YES NO 4 UNKNOWN NULL
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test t3 id NO NO YES 8 UNKNOWN NULL
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test t3 par_ind NO NO YES 4 UNKNOWN NULL
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1
by brian
clean slate |
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drop table t3, t2, t1;
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CREATE TABLE t1(a1 INT NOT NULL, a2 INT NOT NULL,
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PRIMARY KEY(a1, a2)) ENGINE=INNODB;
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CREATE TABLE t2(b1 INT, b2 INT, INDEX (b1, b2),
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CONSTRAINT A1
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FOREIGN KEY (b1, b2) REFERENCES t1(a1, a2)
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ON UPDATE CASCADE ON DELETE NO ACTION) ENGINE=INNODB;
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CREATE TABLE t3(b1 INT, b2 INT, INDEX t3_indx (b1, b2),
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CONSTRAINT A2
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FOREIGN KEY (b1, b2) REFERENCES t2(b1, b2)
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ON UPDATE SET NULL ON DELETE RESTRICT) ENGINE=INNODB;
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CREATE TABLE t4(b1 INT, b2 INT, UNIQUE KEY t4_ukey (b1, b2),
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CONSTRAINT A3
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FOREIGN KEY (b1, b2) REFERENCES t3(b1, b2)
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ON UPDATE NO ACTION ON DELETE SET NULL) ENGINE=INNODB;
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CREATE TABLE t5(b1 INT, b2 INT, INDEX (b1, b2),
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CONSTRAINT A4
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FOREIGN KEY (b1, b2) REFERENCES t4(b1, b2)
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ON UPDATE RESTRICT ON DELETE CASCADE) ENGINE=INNODB;
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drop tables t5, t4, t3, t2, t1;
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create database `db-1`;
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use `db-1`;
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create table `t-2` (
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765
by Brian Aker
Fix information_schema_chmod test. |
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id int not null auto_increment,
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1
by brian
clean slate |
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primary key (id)
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) engine=innodb;
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create table `t-1` (
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765
by Brian Aker
Fix information_schema_chmod test. |
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id int not null auto_increment,
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idtype int not null,
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1
by brian
clean slate |
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primary key (id),
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key fk_t1_1 (idtype),
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constraint fk_t1_1 foreign key (idtype) references `t-2` (id)
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) engine=innodb;
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use test;
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drop database `db-1`;
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create table t1(id int primary key) engine = Innodb;
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create table t2(pid int, foreign key (pid) references t1(id)) engine = Innodb;
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set foreign_key_checks = 0;
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drop table t1;
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drop table t2;
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set foreign_key_checks = 1;
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