Recent questions tagged mysql

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

mysql - #1060 - Duplicate column name 'id'

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624 views 1 answer

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

mysql - Trigger calls in cascade deleting

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695 views 1 answer

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

mysql - Can you GROUP BY with a CASE WHEN THEN alias name?

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601 views 1 answer

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

mysql - java.sql.SQLException: Unknown system variable 'query_cache_size'

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490 views 1 answer

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

mysql - query "not equal" doesn't work

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672 views 1 answer

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

mysql - Cannot Initialize mbstring with PHP 7

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538 views 1 answer

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

mysql - Database modeling for a weak entity

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437 views 1 answer

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

mysql - How to prevent Duplicate records from my table Insert ignore does not work here

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521 views 1 answer

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

mysql - Query using group_concat is returning only one row

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591 views 1 answer

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

mysql - Does Postgresql SERIAL work differently?

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505 views 1 answer

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

mysql - error running apache after xampp install

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643 views 1 answer

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

mysql - How to INSERT a record or UPDATE if it already exists?

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510 views 1 answer

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

mysql - Unknown column in 'having clause'

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1.1k views 1 answer

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

mysql - COLLATION 'utf8_general_ci' is not valid for CHARACTER SET 'latin1'

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1.2k views 1 answer

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

mysql - Create an ActiveRecord database table with no :id column?

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468 views 1 answer

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

mysql - Selecting all records from one year ago till now

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611 views 1 answer

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

mysql - Table 'performance_schema.session_variables' doesn't exist

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513 views 1 answer

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

mysql - Calculate delta(difference of current and previous row) in sql

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742 views 1 answer

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

mysql - When should I close a database connection in PHP?

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486 views 1 answer

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

mysql - Improving a query using a lot of inner joins to wp_postmeta, a key/value table

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459 views 1 answer

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

mysql - Is it possible to count two columns in the same query

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493 views 1 answer

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

mysql - Laravel Cannot delete or update a parent row: a foreign key constraint fails

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1.3k views 1 answer

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

mysql - Getting group by sum and total sum in a single query

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463 views 1 answer

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

mysql - How do you implement an auto-incrementing primary ID in MongoDB?

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492 views 1 answer

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

mysql - php script to log the raw data of POST

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586 views 1 answer

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

mysql - joining the same table twice on different columns

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668 views 1 answer

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

mysql - Laravel migration (errno: 150 "Foreign key constraint is incorrectly formed")

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1.3k views 1 answer

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

mysql - Database corruption with MariaDB : Table doesn't exist in engine

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1.3k views 1 answer

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