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use yssh;
show tables;

SHOW BINARY LOGS;
RESET MASTER;
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create table voc_vals (
	id bigint not null primary key comment '主键',
    x int comment 'X',
    y int comment 'Y',
    val double(25, 10) comment '值',
    create_time datetime comment '值'
);
-- drop table voc_vals;
create index voc_vals_val on voc_vals (val);
create index voc_vals_time on voc_vals (create_time);
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/* select a.*, date_format(create_time, '%Y%m%d%H') "time" from voc_vals a where date_format(create_time, '%Y%m%d%H') = '2023060514';
select * from voc_vals where create_time < date_sub(now(), interval 1 year);
select date_sub(now(), interval 1 year) "time" from dual;
select count(*) from voc_vals; */

select * from voc_vals;
