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The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases.. It is based on Nested Intervals, that "are immune to hierarchy reorganization problem, and allow answering ancestor path hierarchical queries algorithmically — without accessing the stored hierarchy relation".
Using a SELECT statement after the INSERT statement with a database-specific function that returns the generated primary key for the most recently inserted row. For example, LAST_INSERT_ID() for MySQL. Using a unique combination of elements from the original SQL INSERT in a subsequent SELECT statement.
The DUAL table is a special one-row, one-column table present by default in Oracle and other database installations. In Oracle, the table has a single VARCHAR2(1) column called DUMMY that has a value of 'X'. It is suitable for use in selecting a pseudo column such as SYSDATE or USER.
A demonic California dad has been arrested for allegedly beheading his 1-year-old son Friday in an early-morning frenzy of violence that also injured his wife and her mother, according to police.
Unfortunately, there has to be a country that comes in last, and for me, it's Germany. That said, I've been twice, and the second time was better than the first.
WASHINGTON (Reuters) -A U.S. Justice Department watchdog report released on Thursday debunked claims by far-right conspiracy theorists who falsely alleged that FBI operatives were secretly ...
<select> — a drop-down list that displays a list of items a user can select from; The sample image on the right shows most of these elements: a text box asking for your name; a pair of radio buttons asking you to choose between gender values; a select box giving you a list of eye colors to choose from; a pair of check boxes to click on if ...
Turns out J.Lo and Ben “have a mutual respect for one another” and that's “not something that goes away” quickly. As the insider put it, “Obviously things haven’t been the same, but ...