MySQL创建表错误语法

Question

您好我在尝试在数据库webhostc_MyRadContactForm

中创建表时遇到问题

当我尝试在phpMyAdmin中执行以下语句时，我收到此错误

CREATE TABLE Contacts (
-> ContactID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
-> ContactName VARCHAR(100),
-> ContactEmail VARCHAR(100),
-> ContactLeastFavoriteColor VARCHAR(10)
-> ContactDateCreated DATETIME
-> );

  

＃1064 - 您的SQL语法出错;检查与您的MariaDB服务器版本对应的手册，以便在' - ＆gt;附近使用正确的语法。 ContactID INT NOT NULL AUTO_INCREMENT PRIMARY KEY，        - ＆GT;第2行的ContactName VARCHA'

另外phpMyAdmin标记这些行：

我的服务器正在运行：10.0.22-MariaDB

Answer 1

您在ContactLeastFavoriteColor VARCHAR(10)之后错过了一个逗号，并且那些箭头->不应该在那里。以下是创建表的正确语法：

CREATE TABLE Contacts (
  ContactID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
  ContactName VARCHAR(100),
  ContactEmail VARCHAR(100),
  ContactLeastFavoriteColor VARCHAR(10),
  ContactDateCreated DATETIME
);

祝你好运!!

Answer 2

有两个问题：

1. 这些public class RecordHelper { private MediaRecorder mMediaRecorder; private MediaProjection mMediaProjection; private VirtualDisplay mVirtualDisplay; private MediaProjectionManager mProjectionManager; private Context mContext; private Toast mToastText; public RecordHelper(Context mContext){ this.mContext=mContext; mProjectionManager = (MediaProjectionManager) mContext.getSystemService(Context.MEDIA_PROJECTION_SERVICE); mMediaRecorder = new MediaRecorder(); } public void StartRecord(RecordArg mRecordArg, int resultCode, Intent data){ initRecorder(mRecordArg); prepareRecorder(); mMediaProjection = mProjectionManager.getMediaProjection(resultCode, data); MediaProjectionCallback mMediaProjectionCallback = new MediaProjectionCallback(); //This will cause error //mMediaProjection.registerCallback(mMediaProjectionCallback, null); mVirtualDisplay=createVirtualDisplay(mRecordArg); DelayStartRecord(mRecordArg); } public void StopRecord(){ try { mMediaRecorder.stop(); mMediaRecorder.reset(); mVirtualDisplay.release(); mMediaRecorder.release(); mMediaProjection.stop(); mMediaProjection = null; }catch (Exception e){ Utility.LogError("StopRecord Error " + e.getMessage() + " " + e.toString()); } } private void DelayStartRecord(RecordArg mRecordArg){ mMediaRecorder.start(); } private void initRecorder(RecordArg mRecordArg) { mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE); mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); mMediaRecorder.setVideoEncodingBitRate(512 * 1000); mMediaRecorder.setVideoFrameRate(30); mMediaRecorder.setVideoSize(mRecordArg.screenWidth, mRecordArg.screenHeight); mMediaRecorder.setOutputFile(mRecordArg.videoFilename); } private void prepareRecorder() { try { mMediaRecorder.prepare(); } catch (IllegalStateException e) { e.printStackTrace(); Utility.LogError(e.getMessage()); } catch (IOException e) { e.printStackTrace(); Utility.LogError(e.getMessage()); } } private VirtualDisplay createVirtualDisplay(RecordArg mRecordArg) { return mMediaProjection.createVirtualDisplay("ScreenRecord", mRecordArg.screenWidth, mRecordArg.screenHeight, mRecordArg.mScreenDensity, DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR, mMediaRecorder.getSurface(), null /*Callbacks*/, null /*Handler*/); } //Called when the MediaProjection session is no longer valid. private class MediaProjectionCallback extends MediaProjection.Callback { @Override public void onStop() { } } } 符号不是SQL语法的一部分。当您输入多行查询时，它们会提示->打印。您无法将它们复制到PhpMyAdmin。

2. 您在MySQL monitor行末尾缺少逗号。