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Sometimes we need to remove special characters from string or columns value. Suppose, we developed an ETL tool that inserting records on ...
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Many times we come across the scenario where we need to some code based on whether an index exists or not. The following query may he...
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This issue comes much time when we are using PostgreSQL with Node.js, Error: Cannot find module 'bcrypt' in nodejs application, and...
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Many scenarios come in query writing, we have to check particular VIEW exists in the database or not. There are many approaches to che...
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$cond operator has the keyword "if", "then" and "else", using this operator we can perform if/else in ...
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A primary key constraint is a combination of a NOT NULL constraint and a UNIQUE constraint. This constraint ensures that the specific colu...
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To use the `COALESCE` function in PostgreSQL, follow these steps: 1. Start by writing a SELECT statement or any other query where you want t...
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Here we will discuss the technique to fetch nth row of the table in PostgreSQL. I will use the concept of the LIMIT and OFFSET Clause . ... -
Problem: Suppose we have a collection and one field is type string contains some special character (like !@#$%) and we don’t want these s...
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Function DATEADD returns a new DATETIME value based on adding an interval to the specified date. The syntax of the DATEADD date function ...