select top 1 * from tablename 这段SQL语句的意思是:读取一个表中的第一条记录。...如果是 select top 5 * from tablename 这样的话呢就是读取表中记录的前5条记录。
\tablename' is marked as crashed and should be repaired 提示说论坛的帖子表posts被标记有问题,需要修复。.../data/tablename/table.MYI 然后myisamchk 工具会帮助你恢复数据表的索引。好象也不用重新启动mysql,问题就解决了。
大家好,又见面了,我是你们的朋友全栈君。 在SQL Server的性能调优中,有一个不可比面的问题:那就是如何在一段需要长时间的代码或被频繁调用的代码中处理临...
)) { System.out.println("Delete Table " + tableName + " success!")...(tableName, "row1", columnFamily, "column1", "data1"); HBaseTestCase.put...(tableName, "row1"); HBaseTestCase.scan(tableName); } catch (Exception e) {...)) { System.out.println(tableName + " exists!")..., String row) throws Exception { HTable table = new HTable(cfg, tablename); Get get =
tableName1 = TableName.valueOf("t_emp2"); TableName tableName2 = TableName.valueOf("t_dept2");..., family);//调用修改方法,方法接收两个参数:TableName,ColumnFamilyDescriptor admin.deleteColumnFamily(tableName1,..., family1);//调用修改方法,方法接收两个参数:TableName,ColumnFamilyDescriptor admin.deleteColumnFamily(tableName2...tableName1 = TableName.valueOf(Bytes.toBytes(tableName));//定义表名 // HTableDescriptor htd = new HTableDescriptor...demoName = TableName.valueOf(Bytes.toBytes(tableName)); admin.enableTable(demoName); /********
= $this->tableName ....]); $_databasesData[$key]['row'] = $this->_getRowData($val[$this->tableName]);...->query($this->_sqlData($this->mysqlTime, $_tableName))->row_array(); return $timeData['data...要查询的表名 */ protected function _getEngineData($_tableName) { $engineData = $this-...->query($this->_sqlData($this->mysqlRow, $_tableName))->row_array(); return $rowData['data']
创建流水号表 CREATE TABLE SystemSerialNo ( SerialNoId INT PRIMARY KEY IDENTITY, TableName VARCHAR(60...[sp_GetSerialNumber] @tableName varchar(100),@Prefix VARCHAR(20),@PadLeft INT,@ShowDate BIT AS BEGIN...=@tableName AND Prefix=@Prefix) BEGIN INSERT INTO SystemSerialNo(TableName,Prefix,LatestDate...,MaxSerialNo) VALUES (@tableName,@Prefix,CONVERT(VARCHAR(20),GETDATE(),112),1) END...=@tableName AND Prefix=@Prefix AND DataVersion=@dataVersion END ELSE
) { _start = start; _tablename = tablename; } public...table = conn.getTable(TableName.valueOf(tablename)); for (int j=_start; j<100; ++j) { for...cfs){ try { if (admin.tableExists(TableName.valueOf(tablename))) { System.out.println("table...(tablename)); admin.deleteTable(TableName.valueOf(tablename)); System.out.println...table = conn.getTable(TableName.valueOf(tableName)); List list = new ArrayList
} HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(tableName));...admin.tableExists(TableName.valueOf(tableName))){ System.out.println("表" + tableName...(TableName.valueOf(tableName)); }finally { admin.close(); } } 5....Table table = connection.getTable(TableName.valueOf(tableName)); Delete delete = new Delete(...{ Table table = connection.getTable(TableName.valueOf(tableName)); Delete delete =
(TableName.valueOf(tableName))) table.get.close() table match { case Success(v) => v;...`. ") Try { if (admin.tableExists(TableName.valueOf(tableName))) { admin.disableTable...(TableName.valueOf(tableName)) admin.deleteTable(TableName.valueOf(tableName)) }...table = conn.getTable(TableName.valueOf(tableName)) Try { val d = new Delete(rowKey.getBytes.... ") val table = conn.getTable(TableName.valueOf(tableName)) Try { //准备一个row key
/pool'); const pool = Pool.init(); /** * 数据库模型 */ class DB { /** * 构造方法 */ constructor(tableName...) { this.tableName = tableName; this.pool = pool; } /** * 数据查询接口 * @param tableName...* @param idJson * @returns {Promise} */ fetchRow(idJson) { const { tableName, pool...} = this return new Promise((resolve, reject) => { const sqlMod = `SELECT * FROM ${tableName...} = this return new Promise((resolve, reject) => { const sqlMod = `INSERT INTO ${tableName
tableName = TableName.valueOf(name); if (!...tableName = TableName.valueOf(name); if (!...tableName = TableName.valueOf(name); if (!...tableName = TableName.valueOf(name); if (!...tableName = TableName.valueOf(name); if (!
%5B%5D=sea_admin&tablename%5B%5D=sea_arcrank&tablename%5B%5D=sea_buy&tablename%5B%5D=sea_cck&tablename...&tablename%5B%5D=sea_co_news&tablename%5B%5D=sea_co_type&tablename%5B%5D=sea_co_url&tablename%5B%5D=sea_comment...&tablename%5B%5D=sea_content&tablename%5B%5D=sea_count&tablename%5B%5D=sea_crons&tablename%5B%5D=sea_data...&tablename%5B%5D=sea_myad&tablename%5B%5D=sea_mytag&tablename%5B%5D=sea_news&tablename%5B%5D=sea_playdata...&tablename%5B%5D=sea_search_keywords&tablename%5B%5D=sea_tags&tablename%5B%5D=sea_temp&tablename%5B%5D
@Override public void test12(String tableName,String name) { testMapper.test2(tableName...,name); return; } 4. mappe void test2(@Param("tableName") String tableName,@Param("name...tableName); 3. serviceimp @Override public void test3(String tableName) { testMapper.test3...(tableName); } 4. mappe void test3(@Param("tableName") String tableName); 5. mapper.xml DROP TABLE IF EXISTS ${tableName}
SELECT columnname FROM tablename SELECT name1,name2 FROM tablename DISTINCT SELECT DISTINCT columname...FROM tablename -从表里面返回 不重复 的columnam值 WHERE SELECT columnname from tablename WHERE columname = value...,columname2 FROM tablename ORDER BY columname1,columname2 INSERT INTO INSERT INTO tablename VALUES(v1...,v2,v3) INSERT INTO tablename(c1,c2,c3) VALUES(v1,v2,v3) UPDATE UPDATE tablename SET columnname=value...DELETE DELETE FROM tablename WHERE columname=value DELETE * FROM tablename 不删除表的情况下删除所有行 TOP SELECT
); 16 17 // check if the table is exist 18 public boolean isHTableExist(String tableName); 19...20 // create table 21 public void createHTable(String tableName, String[] columnFamilys); 22...rows by row keys 38 public void delRowsByRowKeys(String tableName, List rowKeys); 39 40...isHTableExist(tableName)) { 75 HTableDescriptor tableDescriptor = new HTableDescriptor(TableName.valueOf...(tableName.getBytes()); 226 hAdmin.deleteTable(tableName.getBytes()); 227
.build(); if (admin.tableExists(TableName.valueOf(tableName))) { log.debug...(tableName))) //判断表是存在的 { //获取表 table=getTable(tableName...(tableName))) { admin.deleteColumnFamily(TableName.valueOf(tableName), Bytes.toBytes...))) { admin.disableTable(TableName.valueOf(tableName)); //首先disable掉table...admin.deleteTable(TableName.valueOf(tableName)); log.debug(tableName
) throws Exception { return (HTable) conn.getTable(TableName.valueOf(tableName)); }...(TableName.valueOf(tableName)); } public static void disableTable(String tableName) throws Exception...(String tableName) throws Exception { admin.enableTable(TableName.valueOf(tableName)); }...(TableName.valueOf(tableName)); } public static boolean isTableEnabled(String tableName)...(tableName)); }else { disableTable(tableName); admin.deleteTable(TableName.valueOf
* @throws IOException */ public static void deleteTable(Connection connection, TableName tableName...(tableName); } } finally { if (admin !...tableName = TableName.valueOf("DeviceState"); //创建DeviceState表 createTable(connection..., tableName, "name", "state"); logger.info("创建表 {}", tableName.getNameAsString());...//写入数据 put(connection, tableName, "row1", "name", "c1", "空调"); put(connection, tableName
/// Model /// public static void CreateModel(CodeBuilderArgs args,string tableName...= new "+tableName+"();"); foreach (DataRow row in dt.Rows) {...+">ListAll()"); sb.AppendLine("{"); sb.AppendLine("List list =...new List();"); sb.AppendLine("DataTable dt = SqlHelper.ExecuteDataTable(\...)"); sb.AppendLine("{"); sb.AppendLine("return new "+tableName+"DAL().AddNew(
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