Recent articles tagged sql

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sql server - how to change the collate to all the columns of the database?

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

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sql - How can I get a plain text postgres database dump on heroku?

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

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sql - Why is there a HUGE performance difference between temp table and subselect

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

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sql - in general, should every table in a database have an identity field to use as a PK?

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

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sql - SQLite - replace part of a string

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

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sql - MySQL very slow for alter table query

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

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sql server - How can I tell if a database table is being accessed anymore? Want something like a "SELECT trigger"

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

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sql server - How do you check if a certain index exists in a table?

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

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sql - How can I avoid NULLs in my database, while also representing missing data?

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

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sql - Select multiple columns from a table, but group by one

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

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sql - Add primary key to existing table

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

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sql - From a Sybase Database, how I can get table description ( field names and types)?

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

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sql - Using group by and having clause

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

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sql server - What do the different RAISERROR severity levels mean?