Author: sqlitetutor_obng7r

SQLite’s REPLACE function is used to search and replace a substring within a string. The function takes three arguments: Syntax REPLACE(string, search_string, replacement_string) string is the input string to be searched and replaced. search_string is the substring to be searched for. replacement_string is the string to replace the search_string with. The REPLACE function returns a…(Continue Reading)

The SQLite SUBSTR function is used to extract a substring from a given string. This function takes three arguments: the original string, the starting index position of the substring, and the length of the substring to be extracted. Syntax The syntax of the SQLite SUBSTR function is as follows: SUBSTR(original_string, start_index, length) Where: original_string is…(Continue Reading)

The SQLite LENGTH function is a built-in string function that is used to return the number of characters in a specified string expression. Syntax The syntax for using the LENGTH function is: LENGTH(string_expression) Where string_expression is the input string whose length needs to be calculated. The LENGTH function works on any string data type in…(Continue Reading)

The SQLite LAST_VALUE() function is a window function that returns the last value in a result set. This function is used in conjunction with the OVER clause, which defines a window or a subset of the result set. Syntax The syntax for the LAST_VALUE() function is as follows: LAST_VALUE(expression) OVER ( [PARTITION BY partition_expression, ……(Continue Reading)

SQLite’s FIRST_VALUE() function is a window function that returns the first value of an expression within a window. This function is useful in situations where you want to get the first value of a column for each group within a larger dataset. Syntax The syntax for using the FIRST_VALUE() function in SQLite is as follows:…(Continue Reading)

The SQLite LEAD function is a window function that allows you to access the value of a subsequent row within the same result set, based on a specified column order. It can be used to calculate various types of analytical and reporting queries that require access to values from other rows in a table. Syntax…(Continue Reading)