Lucidchart MySQL ERD Import Query
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SELECT | |
'mysql' dbms, | |
t.TABLE_SCHEMA, | |
t.TABLE_NAME, | |
c.COLUMN_NAME, | |
c.ORDINAL_POSITION, | |
c.DATA_TYPE, | |
c.CHARACTER_MAXIMUM_LENGTH, | |
-- Add this | |
c.IS_NULLABLE, | |
-- | |
n.CONSTRAINT_TYPE, | |
k.REFERENCED_TABLE_SCHEMA, | |
k.REFERENCED_TABLE_NAME, | |
k.REFERENCED_COLUMN_NAME | |
FROM INFORMATION_SCHEMA.TABLES t | |
LEFT JOIN INFORMATION_SCHEMA.COLUMNS c ON t.TABLE_SCHEMA=c.TABLE_SCHEMA AND t.TABLE_NAME=c.TABLE_NAME | |
LEFT JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE k ON c.TABLE_SCHEMA=k.TABLE_SCHEMA AND c.TABLE_NAME=k.TABLE_NAME AND c.COLUMN_NAME=k.COLUMN_NAME | |
LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS n ON k.CONSTRAINT_SCHEMA=n.CONSTRAINT_SCHEMA AND k.CONSTRAINT_NAME=n.CONSTRAINT_NAME AND k.TABLE_SCHEMA=n.TABLE_SCHEMA AND k.TABLE_NAME=n.TABLE_NAME | |
WHERE t.TABLE_TYPE='BASE TABLE' AND t.TABLE_SCHEMA NOT IN('INFORMATION_SCHEMA','mysql','performance_schema'); |
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It seems like you can modify the CSV before you import it into Lucidchart to get it to show nullable information. E.g.: