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MySQL has the hard limit of 4096 columns per table, and a table can contain a maximum of 1017 columns on InnoDB Tables.
We use this restriction to prevent the large table schema information.
ddl: add the columns limit in a table
Merge branch 'master' into zimuxia/ddl-col-limit
ddl: add tests
PTAL @winkyao @breeswish @coocood
ddl: update test
ddl: Add a limit for columns in a table (#4464)