SELECT CURRENT_VERSION(); -- 7.37.1 CREATE TABLE table1(col1 INT, col2 INT); INSERT INTO table1(col1, col2) VALUES (1,10); SELECT * FROM table1; -- COL1 COL2 -- 1 10 Main query: ALTER TABLE IF EXISTS table1 DROP COLUMN IF EXISTS col1; -- Statement executed successfully....
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# 需要导入模块: from sqlalchemy import Table [as 别名]# 或者: from sqlalchemy.Table importdrop[as 别名]defupgrade(migrate_engine):meta = MetaData() meta.bind = migrate_engine shadow_table = Table('shadow_instances', meta, autoload=True) locked_by_column = getattr(shadow_table.c,'locked_...
add_column :finery_checks, :slack_channels, :text History View the changelog Thanks Finery uses a number of awesome open source projects, including Rails, Vue.js, jQuery, Bootstrap, Selectize, StickyTableHeaders, Stupid jQuery Table Sort, and Date Range Picker. Demo data from MovieLens. Want...
Snowflake Basics How to Update Data How to Insert Data How to Delete Data Database Management How to Add a Default Value to a Column How to Add a Column How to Add a NOT NULL Constraint How to Alter Sequence How to Create a Table How to Create a View How to Create an Index How ...
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