Fix some typos in database_migrations.rst

Change-Id: I713605e7df2cb0b11d39f7825f70ec220f66e6a6
This commit is contained in:
zhangyanxian 2016-08-24 08:14:05 +00:00
parent e79930a077
commit 6f46088a65
1 changed files with 2 additions and 2 deletions

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@ -43,7 +43,7 @@ To achieve this goal, the following rules will be observed for schema changes:
a. TODO: This Stack Overflow `Need to alter column types in production
database`_ page and many others summarize the grief involved in doing
these sort of migrations
these sorts of migrations
b. TODO: What about old and new application versions happening
simultaneously?
@ -112,7 +112,7 @@ instructions).
to existing columns/tables**
b. Remove autogenerated comments such as:
``### commands auto generated by Alembic - please adjust! ###``
c. **If you added new columns, follow this guideance**:
c. **If you added new columns, follow this guidance**:
1. For non-nullable columns you will need to add default values for the
records already in the table, per what you configured in the