![]() What types of products are collated and uncollated?įor the most part, the two products that generally fall into the category of collated and uncollated are color copies and posters. However, if you ordered as uncollated then page 1 would print 5 times before moving on to page 2, then page 3 (1,1,1,2,2,2,3,3,3). If you ordered as collated, the 3 page set would print and repeat for a total of 5 times (1,2,3,1,2,3,1,2,3). Let’s say that you have 3 page file and you would like to print 5 copies of each. What does it mean to collate copies? When a printer uses the term, they must collect and assemble the printed sheets of paper within a predetermined order or sequence. The literal definition of “collate” is: collected and combined (texts, information, or sets of figures) in proper order. ![]() In order to better understand the difference between “collated vs uncollated”, it’s important to know what “collated” means. Understanding the difference between collated and uncollated is essential for any project coming out exactly how you want it to. Most people have projects they want to receive a certain way. I image would follow the above rules.Last updated on December 23rd, 2022 at 02:42 pm What does it do when its a composite index with different collations between the columns. I assume it would use that collation which brings up another interesting issue question There is one thing that is not documented or I can not find anything.ĭoes when a column has collation defined? If it does, an error will be raised at run-time. This is not an error condition unless the particular function being invoked requires knowledge of the collation it should apply. If there are conflicting non-default implicit collations among the input expressions, then the combination is deemed to have indeterminate collation. Otherwise, the result is the default collation. If any non-default collation is present, that is the result of the collation combination. Otherwise, all input expressions must have the same implicit collation derivation or the default collation. If any explicitly derived collation is present, that is the result of the collation combination. If any input expression has an explicit collation derivation, then all explicitly derived collations among the input expressions must be the same, otherwise an error is raised. When multiple collations need to be combined, for example in a function call, the following rules are used: An explicit collation derivation occurs when a COLLATE clause is used all other collation derivations are implicit. This distinction affects how collations are combined when multiple different collations appear in an expression. The collation derivation of an expression can be implicit or explicit. One key issue when setting collation on a column is collation derivation The data is not stored in that specific order. Performance there is no impact other than the speed difference between the different collations. Setting the collate on the table means when the order by or group by clause are used on that column that is what it will use by default, so it saves some typing But, to specify a collation in a query that is different than the column's collation when an index is not available for the column's collation is not a performance issue as the data was not sorted in either collation prior to the query. If you then specify a COLLATE clause in the query that is different than the collation used for the index, you will have a performance penalty because you won't be using that index. ![]() the index keys in a separate structure) using the rules of the column's collation (unless you specify the COLLATE clause when creating the index, and not all RDBMSs allow for that). That said, the "depends" part is that if you create an index, it will physically store that data (i.e. Windows-1252 vs UTF-8 vs UTF-16 vs etc), but collation has no impact on data at rest because collation is merely rules for working with the data. The storage of the data is impacted by the encoding / charset (i.e. Short answer: It Depends (standard answer).Īctual answer: specifying a collation at the column level (assuming that the collation is completely independent of the encoding / character set, which is the case for PostgreSQL and others, but in SQL Server the encoding is part of the collation) is merely a default that will be used for all sorting and comparison operations that do not explicitly provide a collation via a COLLATE clause. While not an expert on PostgreSQL collations, I have used PostgreSQL a little bit (I work mostly with SQL Server) and do not see how this particular info would/could be different than what I am about to describe:
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