Instead of having that null, you might want that row to be 0. To do that, use the ifnull function, which returns the first non-null argument it's passed: select day, ifnull(tickets, 0) from stats; day | tickets ---+--- 2018-01-01 | 1 2018-01-02 | 0 2018-01-03 | 3 Pr...
Try ifnull(name, '') (null and empty string are not the same) Ex. select ifnull(null, 'null'), ifnull('','null'); +---+---+ | ifnull(null, 'null') | ifnull('','null') | +---+---+ | null | | +---+---+ Subject Written...
Explanation:We should be aware not to get confused with the MySQL NULLIF() function is the same as the IFNULL() function because both functions are slightly different. We use the SELECT statement and NULLIF() function while writing the query command in MySQL. How does MySQL NULLIF() Function...
Execute Multiple Joins in One Query in MYSQL - Three-Table Join With theONKeyword There is another possibility to meet our goal. We can use theONkeyword as in: Output: Finally, the conditions on which the joins are performed can be incorporated in theWHEREblock itself. ...
How to use If condition in Joins How to use if else condition in case statement using sql server 2008? how to use IF statement in subquery how to use IF-THEN-ELSE in a inline table-valued function how to use iif in sql server 2008? How to use like operator in dynamic query? How ...
But if you work with huge amount of data a simple query might take minutes to execute. You don’t want the user to wait minutes to load a screen showing data, right? So what do we do? Let’s see an use case and how to create and use materialized views in MySQL. Use case I ...
In addition to ANSI-standard methods, many databases provide their specific functions to handle NULL values. 5.1. MySQL MySQL provides the IFNULL function as a concise alternative to COALESCE: IFNULL(expression, default_value) The IFNULL function evaluates the expression. If it’s NULL, the func...
mysql How optimize queryDon't use "LEFT" unless the right-hand column is missing some rows and...
Use the following command to do it: SELECT column, column, IFNULL(column, 'NA') FROM tableName INTO OUTFILE 'path-to-file/outputFile.csv' FIELDS ENCLOSED BY '"' TERMINATED BY ',' ESCAPED BY '"' LINES TERMINATED BY 'n'); Migrate your data from MySQL to Snowflake ...
I have a query in which I want to insert the sum of all the quantities belonging to old and new types. Following is the table in which I want to insert: CREATE TABLE parts( `PART` varchar(25) NOT NULL default '', YEAR intT(4), ...