"Syntax error in FROM clause" 在 C# 中使用 OleDb 但在 Access 本身中相同的查询没有错误

Question

在 c#/OleDbCommand.ExecuteReader 中使用以下 SQL 语句时，我在 FROM 子句中遇到语法错误。在 MS Access 中使用完全相同的语句直接工作正常。

SELECT 
s.idShots, s.shotdata, c.[original], s.[hash], comp.idCompetitions, comp.competitionsname, sh.idShooters, sh.firstname, sh.lastname 
FROM (([Shots] s 
INNER JOIN [ShotsCertificate] c ON c.[uuid] = s.[uuid]) 
INNER JOIN [Competitions] comp ON comp.idCompetitions = s.fidCompetitions) 
INNER JOIN [Shooters] sh ON sh.idShooters = s.fidShooters ORDER BY s.idShots ASC

在 c# 中：

        OleDbCommand cmd2 = new OleDbCommand("", dbc);
        cmd2.CommandText = "SELECT s.idShots, s.shotdata, c.[original], s.[hash], comp.idCompetitions, comp.competitionsname, sh.idShooters, sh.firstname, sh.lastname FROM" +
            " (([Shots] s" +
            " INNER JOIN [ShotsCertificate] c ON c.[uuid] = s.[uuid])" +
            " INNER JOIN [Competitions] comp ON comp.idCompetitions = s.fidCompetitions)" +
            " INNER JOIN [Shooters] sh ON sh.idShooters = s.fidShooters" +
            " ORDER BY s.idShots ASC";

        log.Debug(cmd2.CommandText);
        OleDbDataReader r = cmd2.ExecuteReader();

dbc 连接工作正常，它在以前的一些命令中使用并且一切正常。

感谢您的建议！

Answer 1

我让它工作了...无可奉告：/

SELECT
 [Shots].[idShots], [Shots].[shotdata], [ShotsCertificate].[original], [Shots].[hash], [Competitions].[idCompetitions], [Competitions].[competitionsname], [Shooters].[idShooters], [Shooters].[firstname], [Shooters].[lastname] 
FROM (([Shots] 
   INNER JOIN [ShotsCertificate] ON [ShotsCertificate].[uuid] = [Shots].[uuid]) 
   INNER JOIN [Competitions] ON [Competitions].[idCompetitions] = [Shots].[fidCompetitions]) 
   INNER JOIN [Shooters] ON [Shooters].[idShooters] = [Shots].[fidShooters]
ORDER BY [Shots].[idShots] ASC

Answer 2

郑重声明，问题是 COMP 包含在 Access SQL Reserved Words 的列表中，大概是 Access DDL 的 COMPRESSION 的缩写。将 table 别名从 comp 更改为 cmpt 允许查询运行在 System.Data.OleDb 下成功：

sql = "SELECT s.idShots, s.shotdata, c.[original], s.[hash], cmpt.idCompetitions, cmpt.competitionsname, sh.idShooters, sh.firstname, sh.lastname FROM" +
    " (([Shots] s" +
    " INNER JOIN [ShotsCertificate] c ON c.[uuid] = s.[uuid])" +
    " INNER JOIN [Competitions] cmpt ON cmpt.idCompetitions = s.fidCompetitions)" +
    " INNER JOIN [Shooters] sh ON sh.idShooters = s.fidShooters" +
    " ORDER BY s.idShots ASC";

"Syntax error in FROM clause" 在 C# 中使用 OleDb 但在 Access 本身中相同的查询没有错误

"Syntax error in FROM clause" using OleDb in C# but no error for same query in Access itself

c#

sql

ms-access

oledbdatareader

oledbexception