Detect Mysql Error
Contents |
Generators References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session mysql error php Security Filesystem Security Database Security Error Reporting Using Register Globals User Submitted Data
Php Mysqli Error
Magic Quotes Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file php mysql error handling uploads Using remote files Connection handling Persistent Database Connections Safe Mode Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line
Php Mysql Query Error
Specific Extensions Compression and Archive Extensions Credit Card Processing Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type or die mysql error Related Extensions Web Services Windows Only Extensions XML Manipulation Keyboard Shortcuts? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search(current page) / Focus search box mysqli::$field_count » « mysqli::$error_list PHP Manual Function Reference Database Extensions Vendor Specific Database Extensions MySQL MySQLi mysqli Change language: English Brazilian Portuguese Chinese (Simplified) French German Japanese Korean Romanian Russian Spanish Turkish Other Edit Report a Bug mysqli::$error mysqli_error (PHP 5, PHP 7)mysqli::$error -- mysqli_error — Returns a string description of the last error Description Object oriented style string $mysqli->error; Procedural style string mysqli_error ( mysqli $link ) Returns the last error message for the most recent MySQLi function call that can succeed or fail. Parameters link Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init() Return Values A string that describes the error. An empty string if no error occurred. Examples Example #1 $mysqli->error example Object oriented style $mysqli=new<
Learn Bootstrap Learn Graphics Learn Icons Learn How To JavaScript Learn JavaScript Learn jQuery Learn jQueryMobile Learn AppML Learn AngularJS Learn JSON Learn AJAX Server Side Learn SQL Learn
Mysql_query Error
PHP Learn ASP Web Building Web Templates Web Statistics Web Certificates XML Learn
Mysqli_query Error
XML Learn XSLT Learn XPath Learn XQuery × HTML HTML Tag Reference HTML Event Reference HTML Color Reference HTML die(mysql_error()) Attribute Reference HTML Canvas Reference HTML SVG Reference Google Maps Reference CSS CSS Reference CSS Selector Reference W3.CSS Reference Bootstrap Reference Icon Reference JavaScript JavaScript Reference HTML DOM Reference jQuery Reference jQuery http://php.net/manual/en/mysqli.error.php Mobile Reference AngularJS Reference XML XML Reference XML Http Reference XSLT Reference XML Schema Reference Charsets HTML Character Sets HTML ASCII HTML ANSI HTML Windows-1252 HTML ISO-8859-1 HTML Symbols HTML UTF-8 Server Side PHP Reference SQL Reference ASP Reference × HTML/CSS HTML Examples CSS Examples W3.CSS Examples Bootstrap Examples JavaScript JavaScript Examples HTML DOM Examples jQuery Examples jQuery Mobile Examples AngularJS Examples AJAX http://www.w3schools.com/php/func_mysqli_error.asp Examples XML XML Examples XSL Examples XSLT Examples XPath Examples XML Schema Examples SVG Examples Server Side PHP Examples ASP Examples Quizzes HTML Quiz CSS Quiz JavaScript Quiz Bootstrap Quiz jQuery Quiz PHP Quiz SQL Quiz XML Quiz × PHP Tutorial PHP HOME PHP Intro PHP Install PHP Syntax PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP While Loops PHP For Loops PHP Functions PHP Arrays PHP Sorting Arrays PHP Superglobals PHP Forms PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete PHP Advanced PHP Arrays Multi PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Error Handling PHP Exception MySQL Database MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Delete Data MySQL Update Data MySQL Limit Data PHP - XML PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Exp
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 this site About Us Learn more about http://stackoverflow.com/questions/19870809/detect-mysql-errors-without-executing-it Stack Overflow the company Business Learn more about hiring developers or posting ads with http://stackoverflow.com/questions/23662205/how-to-detect-if-an-error-occured-during-inserts us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask 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 up detect mysql errors without executing it up vote 5 down vote favorite Suppose I make mysql error a query "UPDATE table SET etc etc" Then I "Execute" this query if the query is fine, it executes and if the query has errors, it will return mysql errors My question is...is there a way to do the following: if the query has errors, it will return mysql errors. However, if the query is fine, DON'T execute and instead just say that the query is fine In other words, detect mysql error is there a way to check that mysql will accept my query WITHOUT actually modifying the entries in the database in the event that there is no error? mysql sql database select share|improve this question asked Nov 9 '13 at 0:20 pillarOfLight 2,04773561 check this links this may help you lampdocs.com/blog/2010/10/… stackoverflow.com/questions/377883/… –vijaykumar Nov 9 '13 at 0:28 add a comment| 1 Answer 1 active oldest votes up vote 3 down vote accepted EXPLAIN does the trick if you're running MySQL 5.6 or greater. explain update whatever; If the query is ok, it shows the execution plan. Else, it returns the syntax error. If you're running a lesser version of MySQL, I see a few options: The recommended option: Have a test database ready that mirrors your production database at least in structure. Ideally have it populated with test data to verify the query is not only syntactically correct; but that it works as expected. Run the query in the scope of a TRANSACTION that is immediately rolled back. Run a version of the query that is slightly modified to match NO ROWS. For instance: update table set col1 = @val1 where col2 = @val2; Becomes: update table set col1 = @val1 where (col2 = @val2) and 1=0;
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 this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask 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 up How to detect if an error occured during inserts? up vote 0 down vote favorite I am going to implement transactions for the many insert statements I have that initialize the database. I understand that a transaction will allow us to either commit the changes to the database, thus saving it. Or if one of the inserts fails, we can roll back all of the inserts that potentially did succeed. My question is, how do I detect if an insert statement has failed? start transaction; insert into .. insert into .. insert into .. if (failure) roll back else commit. Further explanation, I have a sql script file that I run to insert a bunch of data into my database. I want to wrap a transaction around these inserts so that when run, if one of them fails then we roll back to the initial state before any inserts executed. mysql share|improve this question edited May 14 '14 at 18:29 asked May 14 '14 at 18:20 Talen Kylon 6351821 you check the individual result of each insert query. e.g. if you're doing this from some client app, e.g. php, you'd check the insert query's return value. if it's ok, then you do another insert, etc... once done inserting, you do the commit. –Marc B May 14 '14 at 18:24 What are you working in? I mean are these stored procedures in MySQL itself? Is this some external application which connects to the DB (like Marc B asked... is this PHP?). –MER May 14 '14 at 18:26 I'm working in MySQL workbench –Talen Kylon May 14 '14 at 18:28 add a comment| 3 Answers 3 active oldest votes up vote 1 down vote accepted I would prefer to provide you an answer after knowing more about what you are working with (see my comment below your question). However, in general, you will receive an error from MySQL if the insert fails. Also, in general, you should check for this failure and then conditionally (if you receive a fail message) rollback. Here is a similar question with an answer: Automatic Rollback if COMMIT TRANSACT