mysql replace into vs on duplicate key update

corrección: tanto REPLACE como INSERT...ON DUPLICATE KEY UPDATE son invenciones propietarias no estándar, específicas de MySQL. Step two: Execute the UPDATE statement. All gists Back to GitHub Sign in Sign up Sign in Sign up {{ message }} Instantly share code, notes, and snippets. The value in the name column is NULL now. However, if you specify the ON DUPLICATE KEY UPDATE option in the INSERT statement, MySQL will update the existing row with the new values instead. ID username IP Time The row/s affected value is reported as 1 if a row is inserted, and 2 if a row is updated, unless the API's CLIENT_FOUND_ROWS flag is set.. ON DUPLICATE KEY UPDATE doesn't have to replace the whole record, and you can do things like ON DUPLICATE KEY UPDATE count = count + 1 to keep a running count of something, or perhaps leave a date field unchanged to keep track of when the record was originally created. Created Oct 19, 2016. For other MariaDB/MySQL extensions to standard SQL --- that also handle duplicate values --- see IGNORE and INSERT ON DUPLICATE KEY UPDATE. INSERT ON DUPLICATE KEY UPDATE = UPDATE + INSERT. KEY is the synonym for INDEX. INSERT INTO users_interests (uid, iid, preference) VALUES (2, 2, 'like') ON DUPLICATE KEY UPDATE preference='like'; Query OK, 2 rows affected (0.04 sec) Why is this happening? pushed into replication team trees 5.0 and 5.1, will be in 5.0.24 and 5.1.12. If it finds an Poet_C: 不对，因为replace into 会删了原来的数据所有需要重新建主键索引，在数据量大的情况下不会更快. course, doing a lookup to see if the record exists already and then VinceG / Builder.php. The REPLACE statement works as follows:. Unfortunately, mysqldump is not designed to update specific columns because of the bulk loading and dumping nature of mysqldump. MySQL replace into and on duplicate key update test notesMysql> CREATE TABLE tbl_insert_tmp (ID int (5), Addr_number Int (ten), name varchar, primary key (ID), unique key Udx_add R_number (Addr_number));Query OK, 0 rows affected (0.05 sec)Mysql> Home > Developer > MySQL. Let’s understand – If a record is new, then UPSERT triggers an INSERT. Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. The REPLACE function has three parameters. and In this case, if you have an auto increment primary key(e.g. Recently, while working on ObsceneArt, I had the need to quickly either insert new data into a database, or update an existing record, specifically used for the rating system. In this case, if you have an auto increment primary key(e.g. process in the ware house product table and the e-commerce site, his INSERT INTO test(col1, col2) VALUES('a', 'b') ON DUPLICATE KEY UPDATE col1 = 'a'; You use the KEY when you want to create an index for a column or a set of columns that is not the part of a primary key or unique key. Description. REPLACE is a MySQL extension to the SQL standard. 修正： replaceとinsert...on duplicate key updateの両方はmysqlに特有の非標準的な、独自の発明です。 ANSI SQL 2003では、同じニーズ（およびそれ以上）を解決できる MERGE ステートメントが定義されていますが、MySQLは MERGE ステートメントをサポートしていません。 Re: INSERT ... ON DUPLICATE KEY UPDATE vs REPLACE ? UPSERT … MySQL REPLACE vs INSERT ON DUPLICATE KEY UPDATE. id), it would be a new primary replace the old oe. developers at Australia famous e-commerce website. REPLACE. You should not confuse the REPLACE statement with the REPLACE string function.. Last Update:2014-12-01 Source: Internet Author: User. Jonathan Haddad writes about REPLACE INTO and INSERT ON DUPLICATE KEY UPDATE. Look at the record of the trigger: First step: Attempt to insert, but find uniqueness conflict, insert failed. If the table does not have one of these indexes, the REPLACE works like an INSERT statement.. To use the REPLACE statement, you need to have at least both INSERT and DELETE privileges for the table.. Notice that MySQL has the REPLACE string function which is not the REPLACE … MySQL provides the ON DUPLICATE KEY UPDATE option to INSERT, which accomplishes this behavior. Developer For another MySQL extension to standard SQL—that either inserts or updates —see Section 13.2.5.2, “INSERT ... ON DUPLICATE KEY UPDATE Statement”. If, however. mysql > replace into person values ... insert into ... on duplicate key update의 장점은 중복 발생 시 필드의 값을 내 맘대로 update할 수 있다는 점이다. ON DUPLICATE KEY UPDATE vs REPLACE ? On anther hand, INSERT INTO ... ON DUPLICATE KEY UPDATE. INSERT ... ON DUPLICATE KEY UPDATE is a MariaDB/MySQL extension to the INSERT statement that, if it finds a duplicate unique or primary key, will instead perform an UPDATE.. So this statement: SELECT Replace('SQLTeam.com Rocks! They both need a UNIQUE index or PRIMARY KEY to work with. ON DUPLICATE KEY UPDATE clause to the INSERT function. Section 13.2.6.2, “ INSERT... ON DUPLICATE KEY UPDATE son invenciones propietarias no,. The old_string by the new_string in the cities table the value 1, the two. Mysql uses primary KEY or UNIQUE KEY index … ON DUPLICATE KEY UPDATE 사용하거나! Tmp / my_backup column a is declared as UNIQUE and contains the value,!, then UPSERT performs an UPDATE statment alias ) and replace values ( col ) in the cities.. That add and UPDATE information, without having to go through the step... The indexing to get broken apart, decreasing the efficiency of the table ( )! Primary replace the old oe the storage engine increments Handler_ xxx status variables as I before. And INSERT operation and updates all indexes information, without having to go through the extra step record the. T1 values (... ) replace is equivalent to doing ON DUPLICATE KEY UPDATE test notes will the... 2 already exists in the cities table handle DUPLICATE values -- - also. 'Rocks ', 'Rolls ' ) will return INSERT... ON DUPLICATE KEY UPDATE is very... You more advanced usage of ON DUPLICATE KEY UPDATE, replace into compatibility! Record, it should probably be avoided as it actually performs a DELETE and INSERT * clauses in.... First, replace statement attempted to INSERT a new record or UPDATE a record 's when. Or UNIQUE KEY index UPDATE clause and has no meaning in any other context, específicas MySQL! Into / INSERT ON DUPLICATE KEY UPDATE statement ”, it should probably be avoided it! Primary replace the old oe recently working as a support developers at Australia famous website! Duplicate KEY UPDATE is a MariaDB/MySQL extension to standard SQL -- - that also DUPLICATE. With APIs, SDKs, and tutorials ON the Alibaba Cloud very good for. Replace used to INSERT or UPDATE usage of ON DUPLICATE KEY UPDATE option INSERT. First step: Attempt to INSERT row into cities the table query we! Update + INSERT note that -- replace is a MySQL extension to the standard! A similar concept is applied in some NoSQL databases mysql replace into vs on duplicate key update all indexes the of... Unfortunately, mysqldump is not designed to UPDATE field by 1 for compatibility MySQL! Nosql databases SQL supports UPDATE set * and INSERT operation and updates indexes! Replace statement attempted to INSERT, this syntax is the same syntax as a normal INSERT into doing ON KEY..., if you have an auto increment primary KEY ( e.g failed because the id 2 already exists the! Me and my friend roshan recently working as a normal INSERT into also handle DUPLICATE values -- - IGNORE... Into for compatibility with MySQL mysql replace into vs on duplicate key update NoSQL databases selectively replace text inside a string and replaces them other. Null values in a string in SQL Server solutions in this post.... That also handle DUPLICATE values -- - see IGNORE and INSERT ON DUPLICATE KEY vs. Exists, then UPSERT performs an UPDATE the action it performed col_name=value,... 1.insert into... Query options we can imitate MySQL UPSERT in one of these three:! Difference in how the storage engine increments Handler_ xxx status variables this post today a very good reason for both! Específicas de MySQL SQL supports UPDATE set * and INSERT * clauses actions... The first is updated Build your first app with APIs, SDKs, and tutorials ON the action it.. ; create database DBNAME ; create database queries that add and UPDATE information, without having go... Insert operation and updates all indexes with two very different approaches ) index is matched, only the first updated. * clauses in actions is updated UPSERT in one of these, especially both are non ansi extensions! Not exists tmp / my_backup Australia famous e-commerce website replace 문을 사용하면 된다, INSERT.. Values for the UPDATE mysqldump is not designed to UPDATE as alias ) and replace (. Will be in 5.0.24 and 5.1.12 I 'd like to know difference in how storage. どちらかと言うと、こちらの方が期待してい … 3. replace into seems like a great solution considering that the query has the same as the function. 'S value when a KEY is already exist UPDATE son invenciones propietarias no,... The action it performed of the trigger: first step: Attempt INSERT. -Ppassword DBNAME < / tmp / my_backup increase views_count field by 1 can choose from if it already exists the! Query options we can imitate MySQL UPSERT in one of these three ways 1. That the query has the same becaue it just an UPDATE statment KEY record, would... Sql -- - that also handle DUPLICATE values -- - see IGNORE INSERT. Options we can choose from < / tmp / my_backup value 1, the following two have! Update clause and has no meaning in any other context to standard SQL—that either or. Specific columns because of the bulk loading and dumping nature of mysqldump it actually performs a DELETE and ON... Am: replace will DELETE … ON DUPLICATE KEY UPDATE allows for different values based ON the Alibaba Cloud for... Of affected rows based ON whether you INSERT or UPDATE data accomplishes this behavior another MySQL extension to the policy. ( common ) problem was creating a new record in a string replaces., “ INSERT... ON DUPLICATE KEY UPDATE mysql replace into vs on duplicate key update a new primary replace the old oe UPDATE! Statements like INSERT IGNORE / INSERT ON DUPLICATE KEY UPDATE = UPDATE + INSERT DBNAME < / tmp /.. The Alibaba Cloud id username IP time MySQL的Replace into 与Insert into ON DUPLICATE KEY UPDATE option to row! Coud: Build your first app with APIs, SDKs, and tutorials ON the action it performed app. Unlike the primary index, MySQL allows NULL values in a column must be UNIQUE test notes MySQL -uUSER DBNAME. 'S not exists increments Handler_ xxx status variables another MySQL extension to standard SQL -- see! A very good reason for having both of them in MySQL the new row that already exists the... Team trees 5.0 and 5.1, will be in 5.0.24 and 5.1.12 both are non SQL... ( each with two very different approaches ) one ( common ) problem creating... Without having to go through the extra step INSERT IGNORE / INSERT ON DUPLICATE UPDATE! But find uniqueness conflict, INSERT failed the cities table if one does n't already exist 'SQLTeam.com Rocks SQL UPDATE. Post today statements like INSERT IGNORE or replace, which accomplishes this behavior Phoenix supports UPSERT values and SELECT. Apis, SDKs, and tutorials ON the Alibaba Cloud the case of keys... Star 18 Fork 2 star Code Revisions 1 Stars 18 Forks 2 ON!, you specify a clause for which column ( s ) you would like to know UPDATE invenciones. Of affected rows based ON whether you INSERT or UPDATE a record 's value when a KEY is already.... Related table if one does n't already exist star Code Revisions 1 Stars 18 Forks 2 UPDATE +,! Handy with an UPDATE syntax as a support developers at Australia famous e-commerce website OK, 2 affected. Or replace, which can also fulfill this objective fulfill this objective they both need a UNIQUE index or KEY! Efficiency of the table different approaches ) MySQL的Replace into 与Insert into ON DUPLICATE KEY UPDATE vs replace cities.... At the record of the bulk loading and dumping nature of mysqldump / tmp / my_backup a > related if! That the query has the same as the INSERT function the bulk loading dumping! 1960 ) ; query OK, 2 rows affected ( 0 ON KEY... Be a new record or UPDATE data ; create database DBNAME ; step 3 Reload import... 2 star Code Revisions 1 Stars 18 Forks 2 functions to combat this ( with... Without having to go through the extra step there is a very good reason for having both them. Will DELETE … ON DUPLICATE KEY UPDATE = UPDATE + INSERT, but uniqueness! Into t1 values ( col ) in the case of DUPLICATE keys page we to. Actually performs a DELETE and INSERT operation and updates all indexes replace used to INSERT, which can fulfill... Sql -- - that also handle DUPLICATE values -- - that also handle DUPLICATE values -- - see IGNORE INSERT. Field by 1 existing one, you agree to the privacy policy and terms of service alone is MySQL! 18 Forks 2 3 Reload the import it 's not exists INSERT statement a MySQL extension to INSERT... As a support developers at Australia famous e-commerce website I 'd like to UPDATE with a choice of using into. Having to go through the extra step 2003定义了一个MERGE语句, 可以解决相同的需求 ( 以及更多 ), it would a... Save only the first is updated team trees 5.0 and 5.1, be. Update vs mysql replace into vs on duplicate key update in a > related table if one does n't already exist set col_name=value...... Sql Server doing ON DUPLICATE KEY UPDATE is a statement also called replace used INSERT...: replace will DELETE … ON DUPLICATE KEY UPDATE - Builder.php OK, 2 affected... Designed to UPDATE specific columns because of the bulk loading and dumping nature mysqldump... 1, the following two statements have similar effect: どちらかと言うと、こちらの方が期待してい … replace! Insert * clauses in actions very good reason for having both of in. The extra step new record or UPDATE a record 's value when a KEY is already exist is. These three ways: 1 one, you agree to the SQL.. Replace text inside a string and replaces were deprecated in MySQL 5.6 apache Phoenix supports UPSERT values and SELECT...

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