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📜  sparql if bound 查询 - SQL 代码示例

📅  最后修改于: 2022-03-11 15:05:16.994000             🧑  作者: Mango

代码示例1
// Don't forget to bind it to a varible
// if you're using it in a select clause

select ?name ?age ( if(bound(?gen), ?gen, 'None') as ?gender )