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Update using-MATCH_RECOGNIZE-to-analyze-data-in-a-data-vault-effectivity-satellite-part-ii.md
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using-MATCH_RECOGNIZE-to-analyze-data-in-a-data-vault-effectivity-satellite-part-ii.md

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@@ -31,7 +31,7 @@ The structure of an [Effectivity Satellite](data-vault-effectivity-satellite.md)
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## MATCH_RECOGNIZE and pattern recognition
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In relational systems, a row pattern recognition task is to detect a sequence of ordered rows from an input table that match a specified pattern. For example, a financial service provider needs to identify sequences of suspicious transactions that match known patterns of criminal activities; an e-commerce site analyzes the steps taken by customers from landing through a social media referrer to a successful purchase. The MATCH_RECOGNIZE clause in SQL allows users to search for patterns in rows of data using a powerful and expressive syntax that is based on RegEx.
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In relational systems, a row pattern recognition task is to detect a sequence of ordered rows from an input table that match a specified pattern. For example, a financial service provider needs to identify sequences of suspicious transactions that match known patterns of criminal activities; an e-commerce site analyzes the steps taken by customers from landing through a social media referrer to a successful purchase. The [MATCH_RECOGNIZE](applied-overview-of-MATCH_RECOGNIZE-clause.md) clause in SQL allows users to search for patterns in rows of data using a powerful and expressive syntax that is based on RegEx.
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One way to analyze data in an [Effectivity Satellite](data-vault-effectivity-satellite.md) is to use SQL's [MATCH_RECOGNIZE](applied-overview-of-MATCH_RECOGNIZE-clause.md) clause.
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### Pattern Definition
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In the MATCH_RECOGNIZE clause, the pattern is constructed from basic building blocks, called pattern variables, to which operators (quantifiers and other modifiers) like Kleene Star `*` and Kleene Plus `+` and can be applied. The whole pattern must be enclosed in paranthesis. For example a pattern can be defined as following:
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In the [MATCH_RECOGNIZE](applied-overview-of-MATCH_RECOGNIZE-clause.md) clause, the pattern is constructed from basic building blocks, called pattern variables, to which operators (quantifiers and other modifiers) like Kleene Star `*` and Kleene Plus `+` and can be applied. The whole pattern must be enclosed in paranthesis. For example a pattern can be defined as following:
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```
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(init modification+ reversal)
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```

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