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25 sie 2021 · This comprehensive cheat sheet is packed with syntax for different text and numeric functions, CASE WHEN statements, handling NULL, date and time types, INTERVALs, and aggregate functions. It also features a troubleshooting section to help you navigate through common issues seamlessly.
- SQL Basics Cheat Sheet
This 2-page SQL Basics Cheat Sheet will be a great value for...
- SQL Basics Cheat Sheet
Definition and Usage. The NULLIF () function returns NULL if two expressions are equal, otherwise it returns the first expression. Syntax. NULLIF (expr1, expr2) Parameter Values. Technical Details. More Examples. Example. Compare two expressions: SELECT NULLIF('Hello', 'Hello'); Try it Yourself » Example. Compare two expressions:
1 cze 2021 · NULLIF(x, y) To save yourself from . division by 0. errors: SELECT last_month, this_month, this_month * 100.0 / NULLIF(last_month, 0) AS better_by_percent FROM video_views; last_month
25 sie 2023 · We've distilled the most frequently employed SQL patterns in data analysis into concise references enabling you to quickly find the essential hints and syntax reminders you need. Whether you're modifying data, performing calculations, or crafting insightful reports, our cheat sheet has got you covered.
You would use the SQL NULLIF function when you want to replace a value with NULL in your query result if it matches a specified condition. NULLIF is particularly useful when you need to handle equality as a distinct case, such as when you want to hide or suppress certain results in your query.
SQL Cheat Sheet provides quick, concise reference material for SQL queries, aiding users in efficiently recalling commands and syntax, facilitating faster query writing and troubleshooting during interviews or practical scenarios. Logical Operators. AND. BETWEEN. IN. IS NULL. LIKE. NOT NULL. OR. UNIQUE. Inclusion/ Exclusion. DISTINCT. EXCEPT. FROM.
26 sie 2021 · 1. You need Date1 is null to check if the column is null:
