Recent questions tagged mysql

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mysql - Java ZonedDateTime save in the Database

I have a model object where I want to have a field with a date. For now I am using ZonedDateTime as it fits ... The database used is a mysql db. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - SQL Query Join in CodeIgniter

I have this query and I need it to be in the CodeIgniter way (query builder). I know how to use the standard ... ORDER BY ` Count(*) ` DESC See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Inserting multiple rows in a table using PHP

I am trying to insert multiple rows into MySQL DB using PHP and HTML from. I know basic PHP and searched many ... echo "$row record added"; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - convert string to date php

hello i wanted to build I get $date and $date1 from form xxx. I wanted to make leave program. now i wanted process ... = + 1; here the picture See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Negative condition in Join

Is there a better way (performance or syntax) to write the following mysql query: Select un.user_id ... for a certain notification_id See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Read from file into variable - Bash Script take2

This is a second part of Read from file into variable - Bash Script I have a bash script that reads ... output should be database1.table1.* See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Why does my InnoDB table have a weird value for record count?

Below is the ammount of rows for 2 tables in my mysql DB 1 is myisam the other innodb, can someone tell me ... 10,308 MyISAM ~118,011 InnoDB See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Efficient data model for range queries

I'm struggling to think of an efficient model to describe IPv4 address data. I want to be able to perform ... for changing/upgrading the DBMS. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql workbench - Could not acquire management access for administration. Runtime Error: Unable to excute command chcp

I installed MySQL workbench 8.0 in windows 7. After the installation I just clicked server status its through the ... can I solve this error? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - ON DUPLICATE KEY UPDATE - add to existing value

I have SQL (MySQL 5.x) query like: INSERT INTO table (val1), ON DUPLICATE KEY UPDATE `val1` = VALUES(`val1` ... + integer) How it could be done? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Are database triggers safe for cross table integrity constraints?

I suggested using a trigger to check a cross table integrity constraint answering this question. It has been suggested in ... ; END IF; END// See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Django MySQLdb version doesn't match _mysql version Ubuntu

I'm trying to get a django site deployed from a repository. I was almost there, and then changed something ... Does anyone have any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - IF syntax error

I'm getting a syntax error while following the MySQL guide for IF syntax. My query is: if 0=0 then select 'hello ... near 'end if' at line 1 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Query to select strings end with certain character

I have a column that contains strings as: aaa_1 aaa_11 I need to query strings that ends with _1. I tried the ... . How can I correct this ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Need a practical solution for creating pattern database(5-5-5) for 15-Puzzle

For static pattern database(5-5-5), see this(page 290 and 283) OR there is an explanation below. For ... without recursion. Is it possible? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Multithreading/Parallel Processing in PHP

I have a PHP script that will generate a report using PHPExcel from data queried from a MySQL DB. Currently, it is ... , it is PHP 5 on CentOS See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - trying to get the number of months

membership table membership_startdate (2011-01-12) membership_dueday values like only dates (09,08,07) member_id ... the membership_dueday... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How to fetch the dropdown values from database and display in jsp

I have two dropdowns in jsp and have to get dropdown list from database and show it in jsp. I am ... jsp dropdown element.Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - ERROR 1062 (23000): Duplicate entry '2147483647' for key 'PRIMARY'

First off all, i've seen many others post like this, however the answer wasn't working on my particular ... place? Really appreciate any help See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - DATEDIFF() or BETWEEN for Date Ranges in SQL Queries

I have recently been informed that the use of the BETWEEN method in SQL is somewhat unreliable, and I should ... if this applies here as well See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - PHP storing password in cookie

Is there a relatively secure way to store the password in the browser cookie (for remembering the login ... hash in database? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Authentication method 'mysql_old_password' not supported

Updated the mysql connector. Net to version 6.6.4 provider to integrate with visual studio 2012, but ... 'mysql_old_password' not supported". See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Number of affected rows Zend DB (UPDATE)

I'm new to Zend Framework and I'd like to know how I can get the number of affected rows from this: ... I work with more than one databases. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Real max_execution_time for PHP on linux

According to the documentation: max_execution_time only affect the execution time of the script itself. Any time spent ... such as Apache level? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql wildcards % vs %%

What is the difference in '%' and '%%', when used in mysql where clause with 'LIKE' ? select * ... u where u.user_nicename like "%%lastuser%%" See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Create Stored Procedures with PDO in PHP

I am reading a TEXT file from PHP and trying to execute commands from it, like creating a DB and all the ... to make a DB installer script. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - SQL doesnt differentiate u and ü although collation is utf8mb4_unicode_ci

In a table x, there is a column with the values u and ü. SELECT * FROM x WHERE column='u'. This ... for the support, especially to Pred. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Get rows product (multiplication)

SO, The problem I have an issue with rows multiplication. In SQL, there is a SUM() function which calculates ... via log will be slow? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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