How to sort rows by null in postgresql?

Wellington Wisozk asked a question: How to sort rows by null in postgresql?
Asked By: Wellington Wisozk
Date created: Tue, Jun 8, 2021 2:24 AM

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Top best answers to the question «How to sort rows by null in postgresql»

  • When you sort rows that contains NULL, you can specify the order of NULL with other non-null values by using the NULLS FIRST or NULLS LAST option of the ORDER BY clause: The NULLS FIRST option places NULL before other non-null values and the NULL LAST option places NULL after other non-null values.

FAQ

Those who are looking for an answer to the question «How to sort rows by null in postgresql?» often ask the following questions:

💻 Why are variables initialized to null in postgresql?

  • They are used to store the data which can be changed. The PostgreSQL variables are initialized to the NULL value if they are not defined with DEFAULT value. We can modify the value stored within the variable by using the function or code block. We can store the data temporarily in the variable during the function execution.

💻 How to change null to null in oracle?

  • In Oracle, NVL ( exp1, exp2) function accepts 2 expressions (parameters), and returns the first expression if it is not NULL, otherwise NVL returns the second expression. In SQL Server, you can use ISNULL ( exp1, exp2) function. Oracle NULL to SQL Server conversion summary:

💻 Is postgresql free?

  • PostgreSQL is free and open source software. Its source code is available under PostgreSQL license, a liberal open source license. You are free to use, modify and distribute PostgreSQL in any form. PostgreSQL requires very minimum maintained efforts because of its stability.

Your Answer

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