int taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length) 解析一条sql语句,将解析结果和参数信息绑定到stmt上,如果参数length大于0,将使用此此参数作为sql语句的长度,如等于0,将自动判断sql语句的长度。 int taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND *bind) ...
= None: taos_stmt_prepare(stmt, sql) return TaosStmt(stmt) def load_table_info(self, tables): # type: (str) -> None taos_load_table_info(self._conn, tables) def schemaless_insert(self, lines, protocol, precision): # type: (list[str], SmlProtocol, SmlPrecision) -> int """ 1...
taosBenchmark -I stmt -n 200 -t 100上面的命令 taosBenchmark 将创建一个名为test的数据库,在其中建立一张超级表meters,在该超级表中建立 100 张子表并使用参数绑定的方式为每张子表插入 200 条记录。使用配置文件运行taosBenchmark 安装包中提供了配置文件的示例,位于 <install_directory>/examples/taos...
taos_stmt_execute()执行成功后,再调用taos_stmt_bind_param()出现Segmentation fault (core dumped) 版本:2.0.22.3 valgrind: ==22557== Invalid read of size 4 ==22557== at 0x9E316DE: tscGetTableMetaInfoFromCmd (tscUtil.c:1849) ==22557== by 0x9DEA2F3: insertStmtBindParam (tscPrepare.c:69...
Exec( "CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))"); using (var stmt = client.StmtInit()) { stmt.Prepare( "Insert into power.d1001 using power.meters tags(2,'California.SanFrancisco') values(?,?,?,?)...
("drop database if exists test_parabind"); stmt.execute("create database if not exists test_parabind"); stmt.execute("use test_parabind");for(inti =0; i < schemaList.length; i++) { stmt.execute(schemaList[i]); } } }privatestaticvoidbindInteger(Connection conn)throwsSQLException{ ...
com.taosdata.jdbc.ws.stmt.entity.com.taosdata.jdbc.ws.stmt.entity.PrepareReq com.taosdata.jdbc.ws.stmt.entity.com.taosdata.jdbc.ws.stmt.entity.RequestFactory com.taosdata.jdbc.ws.stmt.entity.com.taosdata.jdbc.ws.stmt.entity.STMTAction ...
try { Connection conn = ...; Statement stmt = ...; resultSet rs = stmt.executeQuery("select * from table1"); while(rs.next()) { //封装记录 } } catch(Exception ex) { //异常处理 } 答:没有finally语句来关闭各个对象,另外,使用finally之后,要把变量的定义放在try语句块的外面,以便在try语...
=None: taos_stmt_prepare(stmt, sql)returnTaosStmt(stmt) defsubscribe(self, restart, topic, sql, interval, callback=None, param=None) Create a subscription. Expand source code defsubscribe(self, restart, topic, sql, interval, callback=None, param=None):# type: (bool, str, str, int, ...
stmt insert Prepare sql: func(stmt*InsertStmt)Prepare(sqlstring)error Set the child table name: func(stmt*InsertStmt)SetSubTableName(namestring)error Set the table name: func(stmt*InsertStmt)SetTableName(namestring)error Set the subtable name and tags: ...