information_schema.innodb_sys_columns.*

show items implemented by
relation column mysqlmariadbtidbpostgrescockroachdbmssql
innodb_sys_columns  
len INT NOT NULL:
5.7
INT NOT NULL:
10.2-10.7
unsupportedunsupportedunsupportedunsupported
mtype INT NOT NULL:
5.7
INT NOT NULL:
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unsupportedunsupportedunsupportedunsupported
name VARCHAR NOT NULL:
5.7
VARCHAR NOT NULL:
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unsupportedunsupportedunsupportedunsupported
pos BIGINT NOT NULL:
5.7
BIGINT NOT NULL:
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unsupportedunsupportedunsupportedunsupported
prtype INT NOT NULL:
5.7
INT NOT NULL:
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unsupportedunsupportedunsupportedunsupported
table_id BIGINT NOT NULL:
5.7
BIGINT NOT NULL:
10.2-10.7
unsupportedunsupportedunsupportedunsupported