Machine Learning for Developers
SQL is the most full-stack-developer-friendly option ... AS [Loan Amount], [Term], CAST(SUBSTR([Credit Score],1,3) AS INT) AS [Credit Score] /* Clean outlier values of credit score */, REPLACE([Years...
View ArticleSQL Azure troubleshooting, some #Ideas and scenar#iOS.
Demo T-SQL Script queries: SELECT TOP 5 query_stats.query_hash AS "Query Hash", SUM(query_stats.total_worker_time) / SUM(query_stats.execution_count) AS "Avg CPU Time", MIN(query_stats.statement_text)...
View ArticleEstimate When Long Running SQL Processes Will Finish
I’ll be focusing on those DMOs that involve active executions occurring on your SQL Server instance ... activity of one of the types mentioned above actively executing: , CAST(SUBSTRING(ST.text,...
View ArticleTop 80 + SQL Query Interview Questions and Answers with Examples
Oracle Equivalent of SQL Server SUBSTRING is SUBSTR, Query : select substr(FIRST_NAME,0,3) from employee SQL Server Equivalent of Oracle SUBSTR is SUBSTRING, Query : select substring(FIRST_NAME,1,3)...
View ArticleString Comparisons in SQL: The Longest Common Substring.
I’ve always wanted a SQL function that tells me the longest substring shared between two strings. As a present to myself, I’ve written one. I hope someone else finds it useful. There are several...
View ArticleOptimizing Substring Search Performance in SQL Server
The requirement of searching data by part of the value is very common in business applications. All of us are familiar with it – users want to be able to search by entering just a few letters from the...
View ArticleSearching substrings in MDX
Most of you would be familiar with substring searches in SQL. Today, we will see how to replicate the same scenario in MDX. 1) Suppose we have to find all the employee names having ‘David’ as a...
View ArticleChange a Substring with SQL
However, my SQL command gives me an invalid token error at the opening parenthesis of SUBSTR in the SET statement. Is there a rule that you can’t use SUBSTR in a SET statement? If so, do you have a...
View ArticleSQL Server Substring with CharIndex
In this article we are going to explore the T-SQL function CharIndex and also how to use it with another T-SQL function Substring(). CharIndex: This function returns the location of a substring in a...
View ArticleTop 80 + SQL Query Interview Questions and Answers with Examples
Oracle Equivalent of SQL Server SUBSTRING is SUBSTR, Query : select substr(FIRST_NAME,0,3) from employee SQL Server Equivalent of Oracle SUBSTR is SUBSTRING, Query : select substring(FIRST_NAME,1,3)...
View ArticleString Comparisons in SQL: The Longest Common Substring.
I’ve always wanted a SQL function that tells me the longest substring shared between two strings. As a present to myself, I’ve written one. I hope someone else finds it useful. There are several...
View ArticleSQL | LIKE
‘a%t’ Match strings which contain the start with ‘a’ and end with ‘t’. ‘%wow%’ Match strings which contain the substring ‘wow’ in them at any position. ‘_wow%’ Match strings which contain the substring...
View ArticleT-SQL Substring: Splicing a String from Another String
Transact-SQL or T-SQL is a way to run SQL statements on your database tables. SQL Server offers several string functions, which you should know to properly manipulate and work with your data. The...
View ArticleSQL Server Substring with CharIndex
In this article we are going to explore the T-SQL function CharIndex and also how to use it with another T-SQL function Substring(). CharIndex: This function returns the location of a substring in a...
View ArticleT-SQL 101: Built-In Functions
T-SQL has many built-in functions that come in four basic flavors ... Commonly used string-manipulation functions include LEFT, RIGHT, SUBSTRING, and REPLACE. LEFT and RIGHT. The LEFT and RIGHT...
View ArticleSQL SUBSTRING Function
The SQL SUBSTRING function is one of the SQL String Function, which is used to return specified number of characters from the given expression. The SUBSTRING function uses its third argument to decide,...
View ArticleOptimizing Substring Search Performance in SQL Server
The requirement of searching data by part of the value is very common in business applications. All of us are familiar with it – users want to be able to search by entering just a few letters from the...
View ArticleWhat is a substring?
A part of string is called substring. In other words, substring is a subset of another string. In case of substring startIndex is inclusive and endIndex is exclusive. In this example , I will show you...
View ArticleMySQL String Functions
Returns the string str, with the substring beginning at position pos and len characters ... Quotes a string to produce a result that can be used as a properly escaped data value in an SQL statement....
View ArticleSQL | LIKE
‘a%t’ Match strings which contain the start with ‘a’ and end with ‘t’. ‘%wow%’ Match strings which contain the substring ‘wow’ in them at any position. ‘_wow%’ Match strings which contain the substring...
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