Saiba como otimizar consultas SQL para valores NULL seguindo algumas práticas e técnicas recomendadas, como usar operadores IS NULL ou IS NOT NULL, evitando NOT IN com valores NULL e muito mais.

The first form of the CREATE TABLE statement creates tables that automatically map SQL data types to those supported by the SAS System. Use this form when you want to create a new table with columns ...

Using NULL can lead to data inconsistency, especially if multiple users update the same data. It can also complicate queries, requiring more complex logic and potentially hindering performance.

I'm trying to do some simple table parsing in SELECT statements using CCJSqlParserUtil.parse(sql); however, when I qualify a column name with "IS NOT NULL", I get the following exception: Encountered ...