如何使用 iOS Swift 在 Azure DB 中执行 SQL 字符串包含查询？

Posted 2023-03-13

【中文标题】如何使用 iOS Swift 在 Azure DB 中执行 SQL 字符串包含查询？

【英文标题】：How to perform SQL string contains query in Azure DB with iOS Swift?

【发布时间】：2019-11-11 01:59:14

【问题描述】：

我正在尝试使用 ios swift 在 Azure DB 中执行包含查询的字符串。

但是，我收到以下错误： 由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“无法解析格式字符串“CONTAINS(title,"panda")"'

以下是我执行 Azure SQL 查询的代码：

static func tableQueryOrderBy(_ tableName: String, queryCondition: String,
                                  orderBy: String, isDescending: Bool,
                                  fetchOffset: Int, fetchLimit: Int,
                                  queryCallBack: @escaping ([AnyObject]?) -> ()) 

        guard let delegate = UIApplication.shared.delegate as? AppDelegate,
            let client = delegate.client else  return 

        // condition
        guard let table = client.table(withName: tableName) else  return 
        guard let query = MSQuery(table: table) else  return 
        if queryCondition != "" 
            query.predicate = NSPredicate(format: queryCondition)
        
        isDescending ? query.order(byDescending: orderBy) : query.order(byAscending: orderBy)
        query.fetchOffset = fetchOffset
        query.fetchLimit = fetchLimit
        query.read  result, error in
            if let err = error 
                // print("Query failed: ", err.localizedDescription)
                queryCallBack(nil)

             else if let items = result?.items 
                // print("Query succeeded!")
                queryCallBack(items as [AnyObject]?)
            
        
    

【参考方案1】：

终于找到了@Sanket Ray 的示例，将他/她的答案复制粘贴在这里：

let firstName = NSPredicate(format: "firstName CONTAINS[c] %@", searchText)
let lastName = NSPredicate(format: "lastName CONTAINS[c] %@", searchText)

let orCompoundPredicate = NSCompoundPredicate(orPredicateWithSubpredicates: 
[firstNamePredicate,lastNamePredicate]

参考：NSPredicate: Combine CONTAINS with IN