“query string argument of execute statement is null”通常表示在执行SQL语句时,查询字符串参数为空。 这个错误通常出现在使用数据库执行动态SQL语句时,如果传递给execute方法的查询字符串参数是null,就会抛出这个错误。以下是一些可能导致这个错误的场景和解决方法: 可能的原因 未初始化的变
File "/Users/mac/.virtualenvs/myEnv/lib/python2.7/site-packages/django/db/backends/utils.py", line 65, in execute return self.cursor.execute(sql, params) DataError: query string argument of EXECUTE is null CONTEXT: PL/pgSQL function devices_device_insert_child() line 14 at EXECUTE statemen...
AI代码解释 CREATETABLE`tb_user`(`id`int(11)NOTNULLAUTO_INCREMENT,`uid`varchar(40)DEFAULTNULL,`account_name`varchar(40)DEFAULTNULL,`nick_name`varchar(23)DEFAULTNULL,`password`varchar(30)DEFAULTNULL,`phone`varchar(16)DEFAULTNULL,`register_time`timestampNULLDEFAULTNULL,`update_time`timestampNULLDEFA...
keys String 作为结果分组依据的键列。 projection String 用于定义投影的所选属性的列表。 parameters ObjectParameter[] 此方法中使用的零个或多个参数。 返回 ObjectQuery<DbDataRecord> 一个ObjectQuery<T> 类型的新 DbDataRecord 实例,等效于应用了 GROUP BY 的原始实例。 例外 ArgumentNullException query...
Most expressions interpret a string argument as the name of a field, like Lower('name'). The value argument describes the value to be included in the expression, such as 1, True, or None. Django knows how to convert these Python values into their corresponding database type. The output_...
Most expressions interpret a string argument as the name of a field, like Lower('name'). The value argument describes the value to be included in the expression, such as 1, True, or None. Django knows how to convert these Python values into their corresponding database type. The output_...
The evaluation status of the Gremlin query. queryId– a String, of type:string(a UTF-8 encoded string). The ID of the query for which status is being returned. queryString– a String, of type:string(a UTF-8 encoded string). The Gremlin query string. ...
{String} A path to a directory to put exported GTFS files. If the directory does not exist, it will be created. Used when running gtfs-export script or exportGtfs(). Optional, defaults to gtfs-export/<agency_name> where <agency_name> is a sanitized, snake-cased version of the first ...
publicSystem.Data.Objects.ObjectQuery<T>Include(stringpath); 参数 path String 要在查询结果中返回的相关对象的列表(以点分隔)。 返回 ObjectQuery<T> 一个新的ObjectQuery<T>,它具有定义的查询路径。 例外 ArgumentNullException path为null。 ArgumentException ...
{url: string, initialCache?: object, cache?: Cache, fetchOptions?: object | () => object} Client is the constructor for your GraphQL client. It takes a configuration object as an argument, which is required. Providing a GraphQL api url via theurlproperty is required.fetchOptionsare the...