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9de2e60d74
ha_innobase::open(): Always ignore problems with FOREIGN KEY constraints (pass DICT_ERR_IGNORE_FK_NOKEY), no matter whether foreign_key_checks is enabled. Instead, we must report errors when enforcing the FOREIGN KEY constraints. As a result of ignoring these errors, the tables will be loaded with dict_foreign_t objects whose foreign_index or referenced_index will be NULL. Also, pass DICT_ERR_IGNORE_FK_NOKEY instead of DICT_ERR_IGNORE_NONE to dict_table_open_on_id_low() in many other cases. Notably, on CREATE TABLE and ALTER TABLE, we will keep validating the FOREIGN KEY constraints as before. dict_table_open_on_name(): If no other flags than DICT_ERR_IGNORE_FK_NOKEY are set, refuse access to unreadable tables. Some encryption tests rely on this code path. For the DML code path, we used to have the problem that when one of the indexes was missing in dict_foreign_t, we would ignore the FOREIGN KEY constraint altogether. The following changes address that. row_ins_check_foreign_constraints(): Add the parameter pk. For the primary key, consider also foreign key constraints for which foreign->foreign_index=NULL (no underlying index is available). row_ins_check_foreign_constraint(): Report errors also for !check_ref. Remove a redundant check for srv_read_only_mode. row_ins_foreign_report_add_err(): Tolerate foreign->foreign_index=NULL.
36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
set global innodb_file_per_table=1;
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CREATE TABLE ref_table1 (id int(11) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB;
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CREATE TABLE ref_table2 (id int(11) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB;
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CREATE TABLE `main` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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`ref_id1` int(11) NOT NULL,
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`ref_id2` int(11) NOT NULL,
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PRIMARY KEY (`id`),
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UNIQUE KEY `idx_1` (`ref_id1`,`ref_id2`),
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KEY `FK_set_out_analysis_route_id` (`ref_id2`),
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CONSTRAINT `FK_1` FOREIGN KEY (`ref_id1`) REFERENCES `ref_table1` (`id`) ,
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CONSTRAINT `FK_2` FOREIGN KEY (`ref_id2`) REFERENCES `ref_table2` (`id`)
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) ENGINE=InnoDB;
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SET FOREIGN_KEY_CHECKS=0;
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DROP INDEX `idx_1` ON `main`;
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SHOW TABLES;
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Tables_in_test
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main
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ref_table1
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ref_table2
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# restart and see if we can still access the main table
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ALTER TABLE `main` ADD INDEX `idx_1` (`ref_id1`);
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SHOW CREATE TABLE `main`;
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Table Create Table
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main CREATE TABLE `main` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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`ref_id1` int(11) NOT NULL,
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`ref_id2` int(11) NOT NULL,
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PRIMARY KEY (`id`),
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KEY `FK_set_out_analysis_route_id` (`ref_id2`),
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KEY `idx_1` (`ref_id1`),
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CONSTRAINT `FK_1` FOREIGN KEY (`ref_id1`) REFERENCES `ref_table1` (`id`),
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CONSTRAINT `FK_2` FOREIGN KEY (`ref_id2`) REFERENCES `ref_table2` (`id`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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DROP TABLE main, ref_table1, ref_table2;
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