Recent questions tagged MySQL

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SQL query: INSERT INTO `website_categorization`.`category_keyword` ( `ID` , `ID_Category` , `Keyword` , `Score`) VALUES ... help me in this?... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Query on delete cascade not success in child table

I have created two table that have a condition like this. Parent CREATE TABLE IF NOT EXISTS `tbl_requestfix` ( ... the help. It so appreciated See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Can't select rows grouping by created_at

I have the table: +----+----------------------+---------------------+ | id | ... 0.0, Ruby 2.0, mysql db in my rails project. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Display Data with Format in Datagridview

Lets say you have a column in Datagridview that has Negative and Positive Numbers that act as a data. How can ... How can I achied that? TYSM See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How can I index these queries?

I am a little confused about the indexing I am going to do. First, I am using a 4-column index, like ... Search or create a separate index? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - IBM Worklight - How to get OUT parameter when invoking a stored procedure?

I want to know is it possible to get OUT parameter when invoking a stored mysql procedure using worklight SQL ... return OUT parameter value. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Compare values of timestamps and assign a value to each of them in case they have changed

DB-Fiddle CREATE TABLE operations ( id int auto_increment primary key, time_stamp DATE, product VARCHAR(255), ... get the expected result? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - CakePHP 3 time column gets date added

I have a number of columns defined in my MySQL database as "time". That is, they have a time, but not a date. ... there a way to make it stop? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - OSX ld: library not found for -lssl

I am trying to install mysqlclient in virtrualenv on OSX high sierra, with python 3. And got the following ... installed on the same computer. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Using SUM on FLOAT data

One table: items(id, price) Has one row: id: 1, price: 565.8 SELECT price FROM items gives 565.8 ... Where does the 565.799987792969 come from? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - SQL INSERT from SELECT

Lets say in my code I have the users name, and a value. Now I need to save that in the db but I need to ... *, 'http://www.blah.com') Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - convert list to string to insert into my sql in one row in python scrapy

I want to convert a list object into a string and insert this string as one row in mysql database. Can someone ... error. I am stuck at this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How to run multiple insert query in SQL using PHP in one go?

I want to run mysql queries to insert data from a custom html form. Here I have to insert multiple set of data ... of speed on large user base. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - join two tables along with count of records from second table based on condition

I have following tables - Here is SQLFIDDLE categories +-----------+-------------+ | column | type | ... How can I fix this ? Here is SQLFIDDLE See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - PHP generate dynamic PDO insert

The following code should insert each key-value pair in an array into a mathing column-value in a table. The script ... ':' . $key,$value); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

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mysql - java.sql.SQLException: No database selected - why?

the last days I was trying to learn how to access mySQL databases via Java. I am able to load the driver and ... won't be selected either... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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556 views

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mysql - Get only digits using regexp

I have in table column pnum_s I need get only that rows, which value in column pnum_s is exactly 10 symbol and ... But this not returns 0 rows See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql UPDATE statement - overhead for same values?

i have a large MYSQL database with hundreds of thousands of records. i want to update a field in a large ... to be efficient. thanks in advance See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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694 views

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mysql delimiter error

Modifed. DROP FUNCTION IF EXISTS PersonName; DELIMITER |; CREATE FUNCTION PersonName( personID SMALLINT ) RETURNS CHAR(20) ... |' at line 1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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467 views

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mysql - Is it bad for performance to select all columns?

Is it bad to SELECT all columns at once even though you probably don't neeed all of them? However you ... user_table WHERE user_id = :user_id See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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502 views

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mysql - How to create PHP two column table with values from the database?

I want to create a table of names with two columns where names are taken from the database but I don't know how.. I ... -----+ I need your help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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977 views

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mysql - Getting error "1366 Incorrect integer value: '1'" when importing file

I'm trying to inline upload data stored in UTF-8 text files, and I have two problems. Firstly, there's ... the adjustment to the date fields. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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703 views

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mysql - How to convert a varchar column type to date type without losing the dates

I am looking for a way to change the datatype of a column. Currently, in my database, the date columns types were ... . Any idea how to do it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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429 views

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mysql - is it possible to call a sql script from a stored procedure in another sql script?

I'd like to use . to call sql script from inside a stored proc like so... delimiter /// create procedure ... this? What am I doing wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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966 views

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mysql - Deleting a row based on the max value

How can I structure a mySQL query to delete a row based on the max value. I tried WHERE jobPositonId = max(jobPostionId) but got an error? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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521 views

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mysql - inner join and where in() clause performance?

I can get same result for these queries, but which one is the fastest, and most efficient? where in() or inner ... `.`sumpoint` DESC limit 0,10 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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556 views

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mysql - The difference between 'AND' and '&&' in SQL

Is there a difference in the way SQL interprets the logical operators AND and &&? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How to update a pivot table using Eloquent in laravel 5

I am new to laravel. I am working on a laravel 5 app and I am stuck here. I have 2 models as ... translate this query to the laravel equivalent? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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