Could not create unique index. MY_TABL' and the index name 'idxReqId'.

Apr 28, 2019 · Talked to @AndriySvyryd in person and agreed that this should be two 1:* relationships and so the correct fix (i. Applies to: Oracle Database - Enterprise Edition - Version 8. exports = {. UPDATE. See the example below. ADD CONSTRAINT test_constraint UNIQUE (product_id, business_id); OR. Please see the following example. Relevant logs and/or screenshots Output of checks Results of GitLab environment info Expand for output related to GitLab environment info (For installations with omnibus-gitlab Feb 13, 2019 · 17. also all of the null values will be located under one branch in the index , so make sure Jun 20, 2019 · Getting django. I could create the unique index. table_constraints; Then if you find one, you should be able to drop it like: ALTER TABLE <my_table> DROP CONSTRAINT <constraint_name>. There is a workaround, however, if you can afford a small change to the table's structure. Such questions arose only with the Credit model. Unfortunately we (product management) cannot fix technical issues over a forum topic. Aug 8, 2023 · This issue is a database issue and affects all Masking Versions. #t’) > 0 DROP TABLE #t CREATE TABLE #t ( c1 INT ) INSERT INTO #t SELECT 1 INSERT INTO #t SELECT 1. The key field (s) for the index are specified as column names, or alternatively Could not create unique index - claims to have duplicate values but it doesn't. Apparently, because there is already data in this table Jul 8, 2015 · Attempt 2: If I create the index on an empty table or make a combined private key and then put the data into the table, the table contains only 27 of 51 Mio. IntegrityError: duplicate key value violates unique constraint But value does not exists Load 7 more related questions Show fewer related questions Dec 28, 2019 · Solution. Bilal Shahid 2024年2月15日. In the Indexes/Keys dialog box, click Add. 7. Apr 8, 2020 · The CREATE UNIQUE INDEX statement terminated because a duplicate key was found for the object name 'dbo. CREATE UNIQUE INDEX <index-name> ON <schema>. IntegrityError: could not create unique index "baseapp_organization_organization_destination_ptr_id_key" DETAIL: Key (organization_destination_ptr_id)=(1) is duplicated. rows (!). return queryInterface. Id }) . For example, you can create indexes for every year based on the date column Description. Dec 13, 2021 · psycopg2. Indexes are primarily used to enhance database performance (though inappropriate use can result in slower performance). I suggest you google a little for indexes to learn how they work. Someone will need to remove or fix the duplicate entries. SQL> select * from (select col1, col2, count(*) cnt from erpapp. 7 to 11. If I do not place the unique indexes on the partition scheme, the DDL operation succeeds, but as one would expect it places the indexes on the specified file group directly. How to Use amcheck to Check PostgreSQL Index Integrity (Corruption)might help. But after creating an index of name IX_MyIndex you can run the same query. I'm trying to create a unique constraint on multiple columns in my postgres DB using sequelize. BasicDBObject Sep 8, 2021 · could not create unique index, key is duplicated django postgres 4 django. 1, docker container of gitlab running on ec2-instance I am blocked due to the index creation failed for "index_sent_notifications_on_id_convert_to CREATE UNIQUE INDEX terminated because a duplicate key was found for index ID 1. Example(s): USE tempdb; IF OBJECT_ID(‘tempdb. That's the link with the UNIQUE index : without an index, the engine couldn't find fast enough if a new record would conflict with the constraint. Mar 13, 2018 · Column 'TenantId' is partitioning column of the index 'UQ_Tenant_TenantName'. Unique index cannot be applied if records are not unique. You will need 2 unique indices. ) After performing the in-place OS upgrade of the Red Hat Satellite 6. " I added this line to crawler/Publisher: Nov 1, 2021 · 1. What is the expected correct behavior? Migration applies. Aug 23, 2019 · ERROR: could not create unique index "my_view_id_idx" DETAIL: Key (id)=(20477871) is duplicated. A CREATE UNIQUE INDEX statement specified one or more columns that currently contained duplicate values. Partition columns for a unique index must be a subset of the index key. SELECT DISTINCT ON (id) *. Name, i. Generally, you would have a guid or integer as PK, then a unique index on the field or fields that should be unique. Jul 26, 2019 · Again introduced 1; 1. utils. FROM test_user; ALTER TABLE test_user_new PRIMARY KEY (personid); Then replace the original table: DROP TABLE test_user; ALTER TABLE test_user_new RENAME TO test_user; Jan 19, 2013 · You can get it done with two partial UNIQUE indexes and a CHECK constraint: a int. In version 6. HasIndex(i => new { i. If it still does not work then ideally the ids of both the players are same. Aug 17, 2010 · In general, a unique constraint is violated when there are two or more rows in the table where the values of all of the columns included in the constraint are equal. where (path: "/m/search") It should return an array with two or more records. Dec 3, 2020 · 1. Partitionened indexes are created alongside the table partitions and need to be partitioned within those same partitions. Observed Behavior. Suppose that you want COL1 and COL2 to form a unique key, we use Oracle group function COUNT to find duplicate keys. If you decide to prevent The CREATE UNIQUE INDEX command creates a unique index on a table (no duplicate values allowed) Indexes are used to retrieve data from the database very fast. Index can be created during table creation as well as at later time after table is created. Jun 26, 2023 · ORA-01452: Cannot Create Unique Index; Duplicate Keys Found (Doc ID 332494. Jun 24, 2024 · ORA-01452. If you create a non-unique index on a column and subsequently create a unique constraint, you can also use that Dec 6, 2016 · Msg 1908, Level 16, State 1, Line 1 Column 'FILE_UPLOADED_DATE' is partitioning column of the index 'PK_File'. Versions: All versions of SQL Server. py", line 15, in execute_from_command_line(sys. – Sep 9, 2020 · 6. edited May 16, 2020 at 18:40. DETAIL: Table contains duplicated values. If your index is a primary key index, you will need to remove the old primary key constraint and recreate it using the new index you just created. If a problem arises while scanning the table, such as a deadlock or a uniqueness violation in a unique index, the CREATE INDEX command will fail but leave behind an “invalid” index. Apr 24, 2020 · Column 'Customers. 0. Solution: Find the duplicate rows in the table and delete them. May 5, 2023 · Expand the Tables folder. django. Just split it in 2 parts - one ChangeSet with the table creation and one ChangeSet with the Index and UniqueConstraint creation: I want to create primary key for RouteId in Route table, but i got an exception: The CREATE UNIQUE INDEX statement terminated because a duplicate key was found for the object name 'dbo. State, p. Feb 12, 2020 · 2. Below is a query which you can try in AdvanceSQL element to get the duplicated Nov 10, 2015 · SQL error: ERROR: could not create unique index "service_import_checksum_key" DETAIL: Key (checksum)=() is duplicated. ORA Error: ORA-01452 cannot CREATE UNIQUE INDEX duplicate keys found. Therefore, as Carl suggested, I deleted the entity and re-create it. SQL state: 23505 So I deleted the rows from the table and refreshed the view again. Sep 14, 2022 · As you have rightly pointed out, the issue is thrown as your OrderProduct entity has multiple records with the same OrderId,ProductId combination so unable to add unique index. The statement has been terminated. Included properties will not work. If there is no clustered index defined then the primary key will be the clustered index. Jan 14, 2020 · Restore fails - could not create unique index. Cities' and the index name 'IX_Cities_CountryId'. Apr 16, 2023 · You signed in with another tab or window. Command was: ALTER TABLE ONLY _bezittingtype_id. Jun 21, 2016 · UNIQUE Constraint is preferred over UNIQUE Index. Feb 19, 2018 · Collection has a relationship to Users. 2. If the entries must be unique, as in a primary key, then remove duplicate values before creating the UNIQUE index. Alternatively, perhaps you need create a non-unique index. 8. argv) Dec 31, 2019 · public string State {get;set;} The above will make the columns non nullable. Route' and the index name 'PK_Route'. The duplicate key value is (0). Looks like it is telling you that there are duplicate values in the checksum column and you're trying to enforce uniqueness on that column with your constraint. All values in the indexed columns must be unique by row to create a UNIQUE INDEX. Jun 10, 2020 · In this case, we can have multiple NULL values because a unique Index will be created for non-null values We can also define a foreign key that reference a unique key index Conclusion. Msg 1750, Level 16, State 0, Line 1 Could not create constraint. createTable('scores', {. Unique Indexes can have where clauses. [MyTable] ([Field1],[Field2]) INCLUDE (Fields3, Fields4, Fields5) It is trying to search index with name - IX_MyIndex which is not available. On the Table Designer menu, select Indexes/Keys. IntegrityError: could not create unique index "credits_credit_pkey" DETAIL: Key (abstractbaseproduct_ptr_id) = (1) is duplicated. Jan 2, 2023 · psycopg2. Constraint is also another type of index. The PostgreSQL unique index enforces the uniqueness of values in one or multiple columns. I describe how I fixed it in Oct 10, 2021 · Create a copy of the table eliminating duplicates: CREATE TABLE test_user_new (LIKE test_user); INSERT INTO test_user_new. Double check the Object you insert into database. The duplicate keys must be removed, or the index must be created as not unique index. Jun 14, 2020 · I am trying to create an index with multiple fields, one of the field is a foriegn key to another table. INSERT INTO foo VALUES (NULL,2,3,4); -- error! I declared c and d as NOT NULL, to prevent further complications. UNIQUE 约束保证一行中的数据在该列中是唯一的。. Steps to reproduce the behavior, please provide code snippets or a repository: In the SQL editor, run the raw SQL command. Id navigation property. Name ). 3 [Release 8. CREATE INDEX `PRIMARY` ON 'elements' (`id`) USING BTREE 4. The users cannot see the indexes, they are just used to speed up searches/queries. CREATE NONCLUSTERED INDEX [IX_MyIndex] ON [dbo]. For instance, let's have a unique shopping cart per user: ERROR: could not create unique index "application_settings_pkey" Key (id)=(1) is duplicated. CREATE INDEX 'PRIMARY' ON `elements` (`id`) USING BTREE 3. The key field (s) for the index are specified as column names, or alternatively A primary key implies a unique index. To do that, create the index using CREATE INDEX CONCURRENTLY, and then install it as an official constraint using this syntax. 根据索引名找到表名，删除表中重复数据，执行reindx table 表名 参考sql： create unique index <index_name> on <table_name>(<col1>, <col2>, <col3>) Action. Entity<Country>(). That means even in the presence of a unique constraint it is possible to store duplicate rows that contain a SQL> create unique index TEST_IDX on TEST5 (EMPNO); create unique index TEST_IDX on TEST5 (EMPNO) *. We get a unique index as well if you create a unique constraint. A deferrable unique constraint, for example, is enforced using a non-unique index. 5. Most time, it is because you insert the same primary key twice. MY_TABL' and the index name 'idxReqId'. There are three options available to it: create a UNIQUE index with duplicate rows (invalid, as it's not unique any more) Nov 1, 2014 · Note: Adding a constraint using an existing index can be helpful in situations where a new constraint needs to be added without blocking table updates for a long time. postgresql. 11 server from RHEL 7 to 8, the attempt of reindexing all the databases as per the upgrade guide, runs into one or both of the following errors: reindexdb: reindexing database "foreman" reindexdb: error: reindexing of database "foreman" failed: ERROR: could not create unique index "index_fact_names_on_name_and_type" DETAIL Apr 24, 2020 · At first, I did not think that I put some data into the entity yet, but I did it. 0 to 11. This means that the index needs to be sorted in a way that it is first sorted along the partition column (ContractDate). Cannot create a unique index on the projects table of the runners_token field because some records in the table share the same value What is the expected correct behavior? Relevant logs and/or screenshots Output of checks Possible fixes The merge request to add the unique token followed on from another !81991 (merged) which removed the duplicates. CREATE UNIQUE INDEX index_name ON table_name(column1, column2); 例えば、customer_ordersテーブルのcustomer_idとorder_dateに対して複合ユニークインデックスを作成する場合は、次のようになります。 CREATE UNIQUE INDEX unique_customer_order ON customer_orders(customer_id, order_date); 使用例 You may be able to remove the unique CONSTRAINT, and not the INDEX itself. Right-click the table on which you want to create a unique index and select Design. MyTable ON [PRIMARY] GO This option won't time out, but may struggle if you don't have enough memory. Our customer support team is equipped with the tools and the right training to analyze log file packages from our products. Decide whether you want to allow or prevent duplicate keys in the table where the index will be created. Masking Step: This issue can appear in different steps depending on the version and if manually created. – Neil 3. You switched accounts on another tab or window. You signed out in another tab or window. billings group by col1, col2 ) where cnt > 1 order by cnt desc; COL1 COL2 CNT. Copy link Contributor. EDIT: I was wrong after Lieven's comment: When you create a PRIMARY KEY constraint, a unique clustered index on the column or columns is automatically created if a clustered index on the table does not already exist and you do not specify a unique nonclustered index. See previous errors. However i get the following error: Error: Index "player_id_UNIQUE" contains column that is missing in the entity (Earning): player_id. not just to avoid a breaking change) is to make the FK not unique. REM This is an example SQL*Plus Script to detect May 14, 2021 · Try using player__id in unique_together instead of player since its a ForeignKey so using just the id makes more sense. Index is used for faster access. The use of indexes to enforce unique constraints could be considered an implementation detail that should not be accessed directly. It could be a bug in PostgreSQL's indexing code (vanishingly unlikely), it could be hardware problems that PostgreSQL failed to detect (possible, but not common) or it could be that you are mistaken. glaucocustodio opened this issue May 13, 2013 · 1 comment Comments. Select the new index in the Selected Primary/Unique Key or Index text box. Try running the following command from the Rails console and let us know what it returns: IncomingReferer. Expected Behavior. The script fails on this line Aug 10, 2009 · Yes, just to add. With the help of a uniquifier column you can create a unique index that would effectively allow you to have unique Values only for rows with FLAG = 1. IsUnique(); If you also want to prevent multiple cities in the same country to have the same names, assuming that you have a country id (or code) in the Cities table See full list on dev. Upgrade runs fine or renamed objects. 4 to 16. *Option 3. Check your CONSTRAINTS via select * from information_schema. ADD CONSTRAINT _bezittingtype_id_pkey PRIMARY KEY (id); pg_restore: [archiver (db)] could not execute query: ERROR: relation "public. ALTER TABLE sub_product ADD UNIQUE (product_id, business_id); Aug 13, 2015 · I created a unique index for a table and got the following error: SQL error: ERROR: could not create unique index "unique_product" DETAIL: Key (mastercode)=() is duplicated So i run a query to check for duplicated records and really found some duplicates: May 13, 2020 · You should then see a prompt that looks similar to this: [1] pry (main)>. members. Server: Msg 3902, Level 16, State 1, Line 1 Jan 19, 2016 · psycopg2. abstract = True but then I can't have a foreign key. For a table like: CREATE TABLE data ( id SERIAL , day DATE , val NUMERIC ); CREATE INDEX data_day_val_idx ON data (day, val); I'd like to be able to [quickly] query only the distinct days. Restore fails: could not create unique index. Oct 24, 2012 · create unique index func_idx on TEST_TABLE (nvl(UNIQUE_VALUE,1), UNIQUE_GROUP_ID); the disadvantage is that your index will be larger and if you would like to search for null values you will have to use the nvl function in order to avoid table_access_full. 2 Likes. They can guarantee one-to-one relationships in your model. So something like this: entityTypeBuilder. I will never forget to create unique index before testing it. YMMV. This is documented in the manual. Most significant primary key is 'Bill '. Jan 10, 2012 · I have a portion of simple code, that has to fail because of unique index constraint. The script alter table, add columns and finally add a unique nonclustered index. When the constraint is not unique you need to use a regular or non unique index. Postgres Postgres Constraint. I had a similar issue. There can be only one primary key, but there can be multiple unique indexes. Thanks! Oct 26, 2021 · ora-01452: 无法 create unique index； 找到重复的关键字 问题描述：创建唯一索引时，出现ORA-01452报错。 问题分析出现该错误，可能是创建唯一索引的那一列有重复数据，即数据库中的已存在数据不符合要创建索引的条件,导致创建索引的时候出现找到重复关键字的错误。 Sep 19, 2022 · Could not create unique index: how to solve duplication errors 19 September 2022. 1. To create a unique index, you use the following CREATE UNIQUE INDEX statement: ON table_name ( column [, ]) In this syntax: First, specify the index name in the CREATE UNIQUE INDEX statement. 6. I tried: Could not create unique index #2416. up: (queryInterface, Sequelize) => {. But, if I include the partitioning function ( id, created_at) when building the index then I end up with an index that does not guarantee that bar_id is unique. - without unique constraint in model Aug 21, 2007 · The statement cannot be executed this way. to Jun 8, 2021 · To Reproduce. PSQLException potentially caused by a duplicate ID. . Jul 1, 2022 · I'm not saying a string can't be used, it's just unusual. Use one of the following procedures: If you decide to allow duplicate keys, do not use the keyword unique when you create the index. Quote from the documentation: Currently, you can only create unique indexes when the collection contains no documents. CREATE INDEX constructs an index on the specified column (s) of the specified relation, which can be a table or a materialized view. You can write logic to delete the duplicate entries and then retry setting unique index. 今天，我们将学习如何在表中的行已经创建后添加 UNIQUE 约束。. Mar 12, 2022 · It’s likely a corrupt index. The users can create their own collections, and add publisher data to those collections. Use below script to delete the duplicate rows. Perhaps a pre-req was to remove non-unique records. . Unique combination of columns: entity. pfaffman (Jay Pfaffman) January 15, 2020, 5:07pm 2. But there are no another key. db. When I try to migrate, I get. Nov 23, 2016 · 23. 3+, but I'd like to create a unique index on a non-unique column. Code }) . A unique constraint is enforced by an index though it is possible (and sometimes necessary) to enforce a unique constraint using a non-unique index. Jul 8, 2018 · 1. 1) Last updated on JUNE 26, 2023. errors. glaucocustodio commented May 13, Feb 8, 2016 · Filtered indexes do not allow the IGNORE_DUP_KEY option. MySQL Create table syntax: create table Index creation after table creation: create index. This index will be ignored for querying purposes because it might be incomplete; however it will still consume update overhead. (Note that this may be hard to implement due to the design of the model building pipeline. 2] Oracle Database Cloud Schema Service - Version N/A and later Mar 20, 2015 · Not sure if this is possible in PostgreSQL 9. 2. CREATE UNIQUE INDEX UI_t_c1 ON Aug 23, 2023 · Our customer support team takes care of such issues. creating primary key automatically creates clustered index. UniqueViolation: could not create unique index "api_example_uuid_key" DETAIL: Key (uuid)=(6ca65fef-955e-4a98-8088-d2c0342b1474) is duplicated. IsUnique(); The above is the only way. Could not create constraint or index. HasIndex(c => c. The above exception was the direct cause of the following exception: Traceback (most recent call last): File "manage. For me, I have config the id auto increment, so I insert id 0 for twice. Apr 20, 2023 · Could not create unique index-key("id", date) is duplicated. In order to get the best out of your compression, you might also consider creating a clustered index on the table to pre-sort it, then drop it prior to creating the clustered columnstore. It seems that the fix is just to include "ContractDate" in the Index columns. 因此，如果存在列 ID，则所有行都将具有唯一值，而不是重复值 Description. Nobody can say if you are mistaken because for some reason you haven't actually shown us any of these duplicates. – Oct 7, 2020 · The exception of the generated sql occurs due to the addition of the PARTITION BY RANGE to the Index and UniqueConstraint creation. Remove the last line and execute it. psycopg2. UniqueViolation: could not create unique index "dcim_device_unique_name_site" DETAIL: Key (lower(name::text), site_id)=(dus2-x-ac1, 3) is duplicated. createIndex ( { groupNumber: 1, lastname: 1, firstname: 1 }, { unique: true } ) The created index enforces uniqueness for the combination of groupNumber, lastname, and firstname Jan 15, 2014 · I want to create an index using this query: CREATE INDEX `PRIMARY` ON `elements` (`id`) USING BTREE Or something like that, I've tried several queries: 1. MembershipTypes'. Dec 13, 2016 · Look in the JPA provider log at what is happening. Server: Msg 1750, Level 16, State 1, Line 1 Could not create constraint. ERROR at line 1: ORA-01452: cannot CREATE UNIQUE INDEX; duplicate keys found. The script can't know which of those "duplicate" rows is actually needed. The instructions here are pretty clear but they don't work. 209. Feb 20, 2020 · could not create unique index "index1" DETAIL: Key (column1, column2)=(value1,value2) is duplicated. util. The duplicate key value is (1). May 22, 2023 · Looking at PostgreSQL documentation, you could just use the statement below to create a new unique index. IntegrityError: could not create unique index - DETAIL: Key (player)=(Lonergan) is duplicated. Thank you, indeed, Mai The CREATE UNIQUE INDEX statement terminated because a duplicate key was found for the object name 'dbo. Sep 5, 2019 · @mdoering, I haven't had a chance to investigate this in detail yet, but at least 3 GSDs (1204, 1138, 1139) are failing to import because of a org. 4. Things that are different: A primary key also implies NOT NULL, but a unique index can be nullable. UniqueViolation: could not create unique index "dcim_device_unique_name_site" Nov 8, 2005 · pg_restore: [archiver (db)] could not execute query: ERROR: could not create unique index. See: To also disallow (1, NULL, 3, 4) and (NULL, 1, 3, 4), you could use one index with COALESCE instead: Feb 15, 2024 · 在 PostgreSQL 中创建表后添加唯一约束. One should, however, be aware that there’s no need to manually create indexes on unique columns; doing so would just duplicate the automatically-created index. IsUnique(); But this fails when I generate a migration, because of the Category. Jun 10, 2012 · An index is primarily a mean for a database engine to fast find records based on their column values. Customer_ID_f' in foreign key 'FK__Demo__Customer_I__690797E6'. Msg 1750, Level 16, State 1, Line 156 Could not create constraint or index. Dec 9, 2022 · You cannot create a unique index on that column as long at that exists. MembershipTypes' and the index name 'PK_dbo. ERROR: duplicate key value violates unique constraint in postgreSQL. The right way to fix this would be to restore the database in a single transaction via the --single-transaction flag in psql , but this usually fails due to permission errors when extensions and schemas are dropped and recreated. Unique indexes enforce the uniqueness (as their name implies) of one or more columns' values. Popular MongoDB migration tools try to create the unique indexes after importing the data. In this article, we explored unique constraints and unique indexes in SQL Server. See also Can't restore due to corrupt indexes (with some clues on how to deal with corrupt indexes). Category. If they want to gather publishers who focus on medicine, they can create a collection called "medicine. To prevent multiple countries to have the same name, you need a unique index in its name: modelBuilder. Reload to refresh your session. Then, actually it works. _bezittingtype_id_pkey" does Jan 8, 2022 · This statement creates unique index on department_id column of employee table in your example. Can't create unique index in postgres, it says "key is duplicate" even when it's not. May 15, 2021 · The CREATE UNIQUE INDEX statement terminated because a duplicate key was found for the object name 'dbo. PG::UniqueViolation: ERROR: could not create unique index "index_sent_notifications_on_id_convert_to_bigint" Hello Gitlab community I am trying to upgrade my self-hosted gitlab from 16. But both of the objects are added to database and can be queried, in spite of unique index. May 11, 2021 · All values in the indexed columns must be unique by row to create a UNIQUE INDEX. The following SQL creates an index named "uidx_pid" on the "PersonID" column in the "Persons" table: Jul 31, 2014 · CREATE CLUSTERED COLUMNSTORE INDEX IX_MyTable ON dbo. e. I would love it if I could make the destination class. ADD CONSTRAINT. Sep 22, 2010 · In the above table, you couldn't create a unique index on (col1,col2), exactly because the data in it would be non-unique (multiple rows with (bar,2)). HasIndex(p => new { p. 11 the Masking Connector for Oracle was updated with Driver Plugin SDK. In order to make a combination of columns unique you must index both of them. In Cosmos DB for MongoDB, you cannot create a unique index if there are already documents in the collection. CREATE INDEX `PRIMARY` ON `elements` (`id`) USING BTREE 2. I write next code for context table and columns configuration: public class CityConfiguration : IEntityTypeConfiguration<City>. CustomerID' is not the same data type as referencing column 'Demo. If the entries need not be unique, remove the keyword UNIQUE from the CREATE INDEX statement, then re-execute the statement. Run select NormalizedName, count(*) from Entity group by NormalizedName having count(*) > 1; to find the duplicate values, correct that, and attempt creating the index again. Is there some kind of a limit on the unique index or a bug? 本文介绍了如何在postgresql中使用sql语句创建唯一索引，并且只有在索引不存在时才创建。我们通过create unique index和create unique index if not exists语句演示了如何创建唯一索引，并给出了相应的示例。使用唯一索引可以提高数据库查询的性能，并确保数据的唯一性。 Jan 2, 2024 · error: alter table "challenges_invited_users_links" add constraint "challenges_invited_users_links_unique" unique ("challenge_id", "user_id") - could not create unique index "challenges_invited_users_links_unique" In my project i have chal Oct 2, 2018 · Issue type: [X] question [X] bug report [ ] feature request [ ] documentation issue Database system/driver: [ ] cordova [ ] mongodb [ ] mssql [X] mysql / mariadb For example, to create a unique index on groupNumber, lastname , and firstname fields of the members collection, use the following operation in mongosh: db. ALTER TABLE sub_product. CREATE UNIQUE INDEX reference_count_unique_index ON reference_count (document_id, object_id); Apr 18, 2013 · CREATE UNIQUE INDEX some_index USING BTREE ON foo (bar_id); I receive the error: ERROR 1503 (HY000): A UNIQUE INDEX must include all columns in the table's partitioning function. However, two null values are not considered equal in this comparison. <new-table> USING btree (<column>) ** Please note that we have changed the definition to run a create against the <new-table> as opposed to the <old-table>. Here's what my migration file looks like: module. Given that player_id is a foriegn key that im joining how do i handle this . I need a composite unique constraint for my entity's Name property, which is unique per Category (for which it has an FK). cb xp mq mw id it xb si vz sn