To list all views:SHOW FULL TABLES WHERE TABLE_TYPE LIKE 'VIEW'; 深入理解mysql视图 EVENTS:事件 查看事件调度是否打开:show variables like '%event_scheduler%'; 启动事件调度:SET GLOBAL event_scheduler = ON; PROCESSLIST: One of the most used views is the process list. It lists all the queries...
第二部分:The nobel table can be used to practice more SUM and COUNT functions. 1.Show the total number of prizes awarded. SELECT COUNT(winner) FROM nobel; 2.List each subject - just once SELECT DISTINCT subject FROM nobel; 3.Show the total number of prizes awarded for Physics. ...
The documentation for each function that must run exclusively on the leader node includes a note stating that the function will return an error if it references user-defined tables or Amazon Redshift system tables. SeeLeader node–only functionsfor a list of functions that run exclusively on the...
BecauseSQLDriversis implemented in the Driver Manager, it is supported for all drivers regardless of a particular driver's standards compliance. Related Functions For information aboutSee Discovering and listing values required to connect to a data sourceSQLBrowseConnect Function ...
For use cases that are not supported by existing built-in functions, consider defining a custom function. See What are user-defined functions (UDFs)?. Also see: Alphabetical list of built-in functions Operators and predicates For information on how operators are parsed with respect to ...
show tables;show databases;show partitions;show functions;describe extended table_name dot col_name; DDL(Data Defination Language):数据库定义语言 建表: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATE[EXTERNAL]TABLE[IFNOTEXISTS]table_name[(col_name data_type[COMMENTcol_comment],...)][...
( SELECT * FROM con_tabl2) UNION ALL ( SELECT pkg,cate1_gp AS cate FROM con_tabl3 ) ) b ON a.pkg=b.pkg ) GROUP BY gazj )";// 待解析 SQL// 新建 Parser// 解析 SQL 语句List<SQLStatement> stmtList = SQLUtils.parseStatements(selectSql,"hive");// 遍历解析结果,根据不同的语句...
Removes all rows fromcitus_stat_statements. This function works independently frompg_stat_statements_reset(). To reset all stats, call both functions. Arguments N/A Return value None citus_get_active_worker_nodes The citus_get_active_worker_nodes() function returns a list of active worker host...
azure.functions.annotation com.microsoft.azure.functions com.microsoft.azure.documentdb com.microsoft.azure.documentdb.bulkexecutor com.microsoft.azure.documentdb.bulkexecutor.internal com.microsoft.azure.eventgrid.customization com.microsoft.azure.eventgrid com.microsoft.azure.eventgrid.models com.micr...
Oracle_Functions.sql:1035: NOTICE: | result_type | case_count | start_time | complete_time | gsql:Oracle_Functions.sql:1035: NOTICE: |---|---|---|---| gsql:Oracle_Functions.sql:1035: NOTICE: | PASSED | 387 | 2021-11-25 09:42:20.016619 | 2021-11-25 09:42:52.127892 | gsql...