动态 SOQL 查询

Question

我正在尝试使用此代码获取动态结果，但它显示如下所示的错误。请帮助我使用此代码。

System.QueryException: Only variable references are allowed in dynamic SOQL/SOSL.

      boolean first = true;
      string database_query = '';
       List<Schema.FieldSetMember> userfields = SObjectType.Task__c.FieldSets.Search.getFields();
     for(Schema.FieldSetMember f : userfields) {  
        if (!first) {
               database_query += ', ';                
         }
         first = false;
         database_query += f.getFieldPath(); 
     }
    if(Search_value != '' && database_query != ''){           
      TaskList  = Database.query('select ' + database_query +',SOE__c from task__c where SOE__c =: \''+selectSOE +'\' and '+ selectedfield + ' like \'%' + Search_value +'%\'');           
    }

Answer 1

请尝试将查询中的“:=”替换为“=”。也看看这个问题的答案，我想你有类似的问题：

Query using string not working

动态 SOQL 查询

Dynamic SOQL Query

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