DELETE_DATABASE_NAME = "" DELETE_TABLE_NAME = "" DELETE_TABLE_KEY = "" DELETE_CONDITION = "" VIEW_OR_RUN = "VIEW" if os.path.exists(EXEC_SCRIPT_FILE): os.remove(EXEC_SCRIPT_FILE) if os.path.exists(EXEC_DETAIL_FILE): os.remove(EXEC_DETAIL_FILE) def user_confirm(): if VIEW_O...
def clear_partition_data(mysqlconn, day): mysqlcur = mysqlconn.cursor() expired_day = day query_partition_sql = "explain partitions select * from table_name where cnt_date = '%s'" % expired_day # OPTIMIZE or REBUILD after truncate partition try: while True: df = pd.read_sql(query_pa...
deallocate prepare stmt;--删除所有数据deletefrom table_fen_qu where tablename=tablenamein;--新建分区--设置时间setminMonitTimeStr=CONCAT('p',DATE_FORMAT(minMonitTime,"%Y%m%d%H%i%s"));--拼接添加分区表sql set @v_add_s=CONCAT('ALTER TABLE ',tablenamein,' PARTITION BY RANGE COLUMNS(moint_...
Finally, use the TRUNCATE TABLE statement to see how fast it performs in comparison with the DELETEstatement. 1 TRUNCATE TABLE books; In this tutorial, we have shown you how to use the MySQL TRUNCATE TABLE statement to delete all data from tables efficiently, especially for large tables. 备...
"ALTER TABLE g_visit_relation_asset OPTIMIZE PARTITION '%s'"% partition 完整代码如下【Python实现】,循环删除小于指定日期的数据: defclear_partition_data(mysqlconn, day): mysqlcur=mysqlconn.cursor() expired_day=day query_partition_sql="explain partitions select * from table_name where cnt_dat...
def delete_expired_data(mysqlconn, day): mysqlcur = mysqlconn.cursor() delete_sql = "DELETE QUICK from table_name where cnt_date<='%s' limit 50000" % day query_sql = "select srcip from table_name where cnt_date <= '%s' limit 1" % day ...
1.先查询出库中的所有表,“db”是数据库名称 SELECT CONCAT('truncate table ',TABLE_NAME,';') AS a FROM INFORMATION_SCHEMA.TABLES...WHERE TABLE_SCHEMA = 'db' ; 2.得到所有表后,复制,粘贴,运行,见下图 ...
method to remove some or all records from a table in a database. The X DevAPI provides additional methods to use with the delete() method to filter and order the records to be deleted. Delete Records Using Conditions The following example passes search conditions to the delete() method. ...
method to remove some or all records from a table in a database. The X DevAPI provides additional methods to use with the delete() method to filter and order the records to be deleted. Delete Records Using Conditions The following example passes search conditions to the delete() method. ...
-- This SQL statement truncates (empties) all data from the newauthor table. TRUNCATE TABLE newauthor; Explanation: The purpose of this SQL code is to remove all data from the newauthor table, essentially resetting the table to its initial state. ...