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Recent questions tagged ddl

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ddl - Liquibase/PostgreSQL: how to preserve table case correctly?

I'm using Liquibase 3.1.1 to create tables in PostgreSQL 9.1. For example: <changeSet id="1" author="bob"> ... that I specify in the change log? See Question&Answers more detail:os...

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

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ddl - Using ALTER to drop a column if it exists in MySQL

How can ALTER be used to drop a column in a MySQL table if that column exists? I know I can use ALTER TABLE ... 'm using MySQL version 4.0.18. See Question&Answers more detail:os...

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

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