query: Separate tables vs nullable columns
positive_passages.docid: 149602
positive_passages.text: One to at most one relation or multiple null columns?
negative_passages.docid: 33733
negative_passages.text: How do I create a parameterized SQL query? Why Should I?
negative_passages.docid: 105889
negative_passages.text: PostgreSQL multi-column unique constraint and NULL values
negative_passages.docid: 58229
negative_passages.text: Is a table without a primary key normalized?
negative_passages.docid: 17013
negative_passages.text: Difference between different types of SQL?
negative_passages.docid: 88920
negative_passages.text: Is using NULL references OK?
negative_passages.docid: 158985
negative_passages.text: Can a foreign key be NULL and/or duplicate?
negative_passages.docid: 72088
negative_passages.text: Why shouldn't we allow NULLs?
negative_passages.docid: 110077
negative_passages.text: Is it good practice to NULL a pointer after deleting it?
negative_passages.docid: 20423
negative_passages.text: Serialize a nullable int
negative_passages.docid: 34096
negative_passages.text: LEFT JOIN vs. LEFT OUTER JOIN in SQL Server
negative_passages.docid: 118970
negative_passages.text: How do I include nulls during comparisons in SQL Server?
negative_passages.docid: 118065
negative_passages.text: Including null values in unpivoted column
negative_passages.docid: 157835
negative_passages.text: SQL Data Reader - handling Null column values
negative_passages.docid: 108832
negative_passages.text: Is a join optimized to a where clause at runtime?
negative_passages.docid: 21735
negative_passages.text: Column-name and/or table-name as parameters
negative_passages.docid: 10020
negative_passages.text: How to use a longtable with only one entry in the list of tables