MySQL - UPDATE query based on SELECT Query - Stack Overflow
This type of implicit join worked better for me than an explicit join using 'INNER JOIN'. In MySQLWorkBench, both updates on a table of 50K records timed out. Using command-line …
mysql update column with value from another table
Jul 29, 2012 · Yes, no need for complicated joins, when all we need is to update a field with a value from another table.
MySQL: Is there a way to update an entire table in one query?
Feb 21, 2017 · Otherwise, no. One way is to store the often-changed columns in a separate table, DELETE or TRUNCATE that table, and INSERT all the new values in one query (by using a …
MySQL update CASE WHEN/THEN/ELSE - Stack Overflow
Oct 6, 2012 · I am trying to update a LARGE MyISAM table (25 million records) using a CLI script. The table is not being locked/used by anything else. I figured instead of doing single UPDATE …
SQL update a table with a foreign key - Stack Overflow
Apr 19, 2010 · An admittedly ugly alternative is to: - Create a row in the parent table, based on the row to be updated but containing the new foreign key value - Update all child rows where the …
join - MySQL update a joined table - Stack Overflow
156 The multi-table UPDATE syntax in MySQL is different from Microsoft SQL Server. You don't need to say which table (s) you're updating, that's implicit in your SET clause.
MySQL error code: 1175 during UPDATE in MySQL Workbench
Jul 12, 2012 · MySql workbench gave me the same error, after I unchecked safe mode , I then reconnected the server and the update function worked. Go to Query in the menu bar and …
How can I tell when a MySQL table was last updated?
Both the UPDATE_TIME method and the show table status method below are available only with the MyISAM engine, not InnoDB. Although this is listed as a bug, it is mentioned in the MySQL …
MySQL - Using If Then Else in MySQL UPDATE or SELECT Queries
Aug 8, 2015 · UPDATE Table SET A = '1' IF A > 0 AND A < 1 SET A = '2' IF A > 1 AND A < 2 WHERE A IS NOT NULL; I have seen CASE expression and IF expression in Procedures and …
mysql - SQL - Update multiple records in one query - Stack Overflow
I have table - config. Schema: config_name | config_value And I would like to update multiple records in one query. I try like that: UPDATE config SET t1.config_value = 'value' , t2.config_va...