want to check the hypothesis. I want the counterparty to access my database via php curl what can I do this? Is there a template you can refer to? this is due to the fact that the host is in parallel with mysql and all the mysql data are managed cent...
I wrote an api hypothesis called sql.php myself. I am in another sql-test.php $data = array( "errno" => 1 , "errstr" => 2 , "errfile" => 3 , "errline" => 4 ); $data_string = js...
select * from test_table where a=xx1 and b=xx2 and c=xx3 group by dailxx4; ask the bosses, this kind of query condition, so how to build it? Do you want to build a single index or a composite index? Answers and reasons. I hope the bosses can mention an...
my mysql database has two pieces of data when I print_r, it looks like this: [{"errno":"1","errstr":"2","errfile":"3","errline":"4"},{"errno":"12",...
if you want to query the data with an index in the database, the sql statement is SELECT * FROM opot.tjopot WHERE MATCH ( ZSD1 ) AGAINST ( division and multiplication of rational numbers ) this statement can query the results in mysqlworkbench, but c...
for example, the field addtime is a timestamp, and my business is almost always sorted inversely by the time of this field. Can I directly build such an index? You don t need order by addtime desc? ...
when you install the latest version of mysql, on Ali CVM, you can log in from the command line, but when you log in with navicat for mysql, you will be prompted client does not support authentication protocol requested by server;consider upgrading MySq...
-sharp! bin bash file_name2=`date +%Y%m%d%H%M%S` mkdir home sql_bak user_bak $file_name2 chmod 7777 home sql_bak user_bak $file_name2 -sharp-sharp-sharp-sharp arr_string=(users payrecord_fruitcoin yamirecord vipexam_record stream_order io...
I d like to ask where DataGrip saves commonly used sql statements. ...
the structure of the table is as follows: ID,NAME,START,END case data are as follows: ID NAME START END 1 Zhang San 100200 2 Zhang San 600900 3 Li Si 210 460 . want to realize that input 150 can query 1 Zhang San 100 200, input 460 query to 3 Li S...
specifically, there are user member table, course course table, user purchase record member_course table, but you need to pay after purchase, so is it necessary to create another Order table to record users purchases? If necessary, why? my idea is t...
$res = DB::connection( mysql_business )->table( t_activity ) ->select( SELECT app_id,title ,created_at,id FROM t_activity WHERE created_at > ? ORDER BY created_at DESC , [ 2018-04-01 20:11:12 ...
Server version: CentOS Linux release 7.4.1708 (Core) MySQL version: 5.7.21 -Source Code installation $ mysql ERROR 2002 (HY000): Can t connect to local MySQL server through socket u01 my3306 mysql.sock (2) this is an error I reported when I lo...
for example, the comment table is divided into 100tables and divided according to the userid hash algorithm, so the background management should display the comment list, but cannot jointly query 100tables. How do you do this? ...
query the COUNT of a sentence (1), JOIN IN has 4 tables. The total number of records is 3800, and it takes 43 seconds this is SQL: select count(1) from ( SELECT a.id AS "id", a.batch_id AS "batchId", a.product_type AS "product...
guys, I d like to ask String s = new String (content.getBytes ( "GBK ")); and String s = URLEncoder.encode (content, "GBK "); what s the difference between the two? Why is the receiver still garbled after the first transcoding is used as a http r...
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based on binlog master-slave replication, if master s library or table is deleted, slave s will also be deleted. I would like to ask whether the binlog read by slave from master is saved on slave, so that slave can be restored after deleting the databa...
for stand-alone service, the primary key ID is a long integer, which needs to be non-continuous. For example, self-increment cannot be implemented because it is continuous. I thought of using System.nanoTime () to do ID, because I haven t practiced it...
how does django import tets.py data when conducting automated testing? I export the contents of the database as api.json. Then import to the unit test database, but the unit test database does not have data, what is wrong? where the json file of the...
the code before splicing is like this: c.eval("capture.output(y, file = "mile.xml ")"); spliced code: c.eval("capture.output(y, file = ""+dataContent+".xml ")"); but this kind of stitching me...
<template> <div id="app"> <top-view > <router-view > <footer-view > < div> < template> <script> import top from @ view Top import footer from @ view Footer export default...
jav inserts Mysql data exception Data too long exception information 2018-04-24 00:15:01 ERROR com.comall.cybershop.common.base.DaoSupport org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback; SQL [update cs_awardCardRe...
for example, the code for the first version is: api public function buyGoods(){ $validate->validateParam(); $goods->buy(); } at this time, the first version is running steadily, and we hope that we will not modify this ...
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