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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?

..., something like this: CONSTRAINT region_ibfk_1 FOREIGN KEY (country_id) REFERENCES country (id) ON DELETE NO ACTION ON UPDATE NO ACTION Now simply issue an: alter table region drop foreign key region_ibfk_1; And finally an: alter table region drop column country_id; And ...
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mysql Foreign key constraint is incorrectly formed error

I have two tables, table1 is the parent table with a column ID and table2 with a column IDFromTable1 (not the actual name) when I put a FK on IDFromTable1 to ID in table1 I get the error Foreign key constraint is incorrectly formed error . I would like to delete table 2 record if tab...
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'dragleave' of parent element fires when dragging over children elements

...e and I've attached the dragenter and dragleave events to the <div id="dropzone"> element. 22 Answers ...
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Maven: Non-resolvable parent POM

... the same directory (same project). But this doesn't solve this error. Any idea how to fix it? – Praneeth Peiris Apr 5 '19 at 9:26 ...
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Remove items from one list in another

... You will also need using System.Linq; if you didn't have it before. – yellavon Mar 11 '15 at 20:28 1 ...
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What's the difference between TRUNCATE and DELETE in SQL

...to be faster than a DELETE. Various system-specific issues have to be considered, as detailed below. Statement type Delete is DML, Truncate is DDL (What is DDL and DML?) Commit and Rollback Variable by vendor SQL*Server Truncate can be rolled back. PostgreSQL Truncate can be rolled back...
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Get the subdomain from a URL

...e('super.duper.domain.co.uk'); $result->getSubdomain(); // will return (string) 'super.duper' $result->getSubdomains(); // will return (array) ['super', 'duper'] $result->getHostname(); // will return (string) 'domain' $result->getSuffix(); // will return (string) 'co.uk' ...
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Coding Conventions - Naming Enums

..."coords"), SHAPE("shape"), TARGET_IMAGE("targetImage"); private final String val; private PropertyKeys(String val) { this.val = val; } @Override public String toString() { return val; } } So it seems even the guys at Oracle sometimes trade convention with...
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How can I automate the “generate scripts” task in SQL Server Management Studio 2008?

...ect == false) { urns.Add(sp.Urn); } } StringBuilder builder = new StringBuilder(); System.Collections.Specialized.StringCollection sc = scrp.Script(urns.ToArray()); foreach (string st in sc) { // It seems each string is a sensible batch, and p...
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Override setter with arc

Did I correctly override the setter when ARC is enabled? 3 Answers 3 ...