Author: Dev

The REGEXP_COUNT function in Oracle PL/SQL is a powerful tool for working with regular expressions to count the number of occurrences of a specified pattern in a string. This function is particularly useful when you need to analyze textual data and extract information based on specific patterns. Here’s a breakdown of the REGEXP_COUNT function: Syntax…(Continue Reading)

The REGEXP_LIKE function in Oracle PL/SQL is a powerful tool for pattern matching within strings. This function allows you to use regular expressions to search for patterns in text data stored in your Oracle database. Here’s a breakdown of the REGEXP_LIKE function and its key components: Syntax REGEXP_LIKE (source_string, pattern [, match_parameter ]) source_string: The…(Continue Reading)

Overview Window Functions, Common Table Expressions (CTEs), and other complex methods are used in Advanced SQL approaches for Data Engineering to manipulate data in SQL databases. With the help of window functions, data may be split up and arranged in a variety of ways, enabling sophisticated computations and data aggregations. Common Table Expressions (CTEs) offer…(Continue Reading)

One of the features of PL/SQL is the UPDATEXML function, which allows you to update XML data stored in an Oracle database. The UPDATEXML function allows you to modify the value of a specific node in an XML document. Here is the basic syntax of the UPDATEXML function: Syntax UPDATEXML(xml_document, xpath_string, new_value) xml_document is an…(Continue Reading)

One of the key features of PL/SQL is the ability to query and manipulate XML data using the EXTRACTVALUE function. The EXTRACTVALUE function is used to extract a value from an XML document. It takes two arguments: the first argument is the XML document, and the second argument is an XPath expression that specifies the…(Continue Reading)