Error With Ifnull
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Nested Select and IFNULL Syntax Error up vote 0 down vote favorite need help on a MySQL query, can't seem to figure out how to correctly write this statement. I am trying to nest a select in an insert statment and ifnull is also used. INSERT INTO vo (vo_id, agreement_id, serial_no, vo_date, vo_status) VALUES (NULL, '3', (SELECT IFNULL(max(serial_no),1) FROM vo WHERE agreement_id = '3'), tableau show blank instead of null CURDATE(), 'Open') Any help is appreciated! Thank you! EDIT: Error i got in mysql is : #1093 - You can't specify target table 'vo' for update in FROM clause mysql sql share|improve this question edited Dec 14 '14 at 23:19 potashin 30.5k44174 asked May 13 '14 at 19:53 user3448267 728 just added the error in an edit thanks! –user3448267 May 13 '14 at 19:57 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote accepted You can get rid of this error by wrapping your subquery in another subquery without WHERE clause : INSERT INTO vo (vo_id, agreement_id, serial_no, vo_date, vo_status) VALUES (NULL, '3', (SELECT x.* FROM (SELECT IFNULL(max(serial_no),1) FROM vo WHERE agreement_id = '3' ) x), CURDATE(), 'Open') share|improve this answer edited May 13 '14 at 20:00 answered May 13 '14 at 19:54 potashin 30.5k44174 @user3448267 : Have you succeeded? –potashin May 13 '14 at 20:03 yes this works perfectly, but I am having trouble understanding this syntax. what does the x.* and x in the nested statement do actually? –user3448267 May 13 '14 at 20:05 @
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of tableau calculated field null values this site About Us Learn more about Stack Overflow the company Business tableau replace null with 0 Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask tableau count if null Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign http://stackoverflow.com/questions/23640376/mysql-nested-select-and-ifnull-syntax-error up MySQL IFNULL “N/A” yields “item cannot be found in the collection” Error up vote 3 down vote favorite I have been using IFNULL functions to convert NULL values to zeros in my SQL queries, like this: SELECT IFNULL(mem.comment_count,0) FROM members... This works fine. I am now trying to use the IFNULL function to convert NULL values to a string, "N/A", but I http://stackoverflow.com/questions/10029305/mysql-ifnull-n-a-yields-item-cannot-be-found-in-the-collection-error keep getting the error: "item cannot be found in the collection corresponding to requested name or ordinal": SELECT IFNULL(mem.address2,'N/A') FROM members... I even tried using COALESCE just incase it's an empty string instead of a NULL: SELECT COALESCE(NULLIF(mem.address2, ''), 'N/A') FROM members... But still throws the same error. Any ideas? mysql sql share|improve this question edited Apr 5 '12 at 13:33 Marcus Adams 35.7k44392 asked Apr 5 '12 at 13:14 TheCarver 7,9311763119 1 What's the type of mem.address2? –Heinrich Apr 5 '12 at 13:16 It is VARCHAR 100 –TheCarver Apr 5 '12 at 13:17 Does members have an alias mem? If not; you cannot use it like that in IFNULL, use IFNULL(members.address2) –Lex Apr 5 '12 at 13:21 @Lex: Yes, members has an alias of mem. I should have included that in my question, sorry. I have solved it now thanks to Konerak below. The IFNULL function needed an alias... –TheCarver Apr 5 '12 at 13:23 Please tag the question with the language/database layer that generated the error. –Marcus Adams Apr 5 '12 at 13:32 | s
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft https://msdn.microsoft.com/en-us/library/ms184325.aspx Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Retired content Samples We’re sorry. The https://www.bennadel.com/blog/984-using-nullif-to-prevent-divide-by-zero-errors-in-sql.htm content you requested has been removed. You’ll be auto redirected in 1 second. Transact-SQL Reference (Database Engine) Built-in Functions (Transact-SQL) System Functions (Transact-SQL) error with System Functions (Transact-SQL) ISNULL (Transact-SQL) ISNULL (Transact-SQL) ISNULL (Transact-SQL) $PARTITION (Transact-SQL) @@ERROR (Transact-SQL) @@IDENTITY (Transact-SQL) @@PACK_RECEIVED (Transact-SQL) @@ROWCOUNT (Transact-SQL) @@TRANCOUNT (Transact-SQL) BINARY_CHECKSUM (Transact-SQL) CHECKSUM (Transact-SQL) COMPRESS (Transact-SQL) CONNECTIONPROPERTY (Transact-SQL) CONTEXT_INFO (Transact-SQL) CURRENT_REQUEST_ID (Transact-SQL) CURRENT_TRANSACTION_ID (Transact-SQL) DECOMPRESS (Transact-SQL) ERROR_LINE (Transact-SQL) ERROR_MESSAGE (Transact-SQL) ERROR_NUMBER (Transact-SQL) ERROR_PROCEDURE (Transact-SQL) ERROR_SEVERITY error with ifnull (Transact-SQL) ERROR_STATE (Transact-SQL) FORMATMESSAGE (Transact-SQL) GET_FILESTREAM_TRANSACTION_CONTEXT (Transact-SQL) GETANSINULL (Transact-SQL) HOST_ID (Transact-SQL) HOST_NAME (Transact-SQL) ISNULL (Transact-SQL) ISNUMERIC (Transact-SQL) MIN_ACTIVE_ROWVERSION (Transact-SQL) NEWID (Transact-SQL) NEWSEQUENTIALID (Transact-SQL) ROWCOUNT_BIG (Transact-SQL) SESSION_CONTEXT (Transact-SQL) SESSION_ID (Transact-SQL) XACT_STATE (Transact-SQL) TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. ISNULL (Transact-SQL) Other Versions SQL Server 2012 THIS TOPIC APPLIES TO: SQL Server (starting with 2008)Azure SQL DatabaseAzure SQL Data Warehouse Parallel Data Warehouse Replaces NULL with the specified replacement value. Transact-SQL Syntax ConventionsSyntax Copy -- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse ISNULL ( check_expression , replacement_value ) Argumentscheck_expression Is the expression to be checked for NULL. check_expression can be of any type.replacement_value Is the expression to be returned if check_expression
Using NULLIF() To Prevent Divide-By-Zero Errors In SQL By Ben Nadel on October 3, 2007 Tags: SQL Boyan Kostadinov just sent me a cool link to an article that is the final part in a four part series that discusses the SQL NULL value. I haven't read the first three parts yet, but there is a really cool tip in the fourth part on using NULLIF() to prevent divide-by-zero errors in a SQL call.The idea here is that, as with any other form of math that I know of, you cannot divide by zero in a SQL call. Therefore, running this code: