I have been searching for solutions to this, all what I have seen doesn't work, currently I am trying: ALTER TABLE INVOICE_RECORDS ALTER COLUMN SERIAL_NUMBER VARCHAR(10) NOT NULL
but it doesn't work.
Error message is: java.sql.SQLSyntaxErrorException: Syntax error: Encountered "VARCHAR" at line 1, column 53.
I am running this in a JavaFX app.
I just want to add the NOT NULL constraint to the SERIAL_NUMBER column.
Based on Bryan Pendleton's comment I tried
ALTER TABLE INVOICE_RECORDS ALTER COLUMN SERIAL_NUMBER NOT NULL
...and it worked for me. Removing VARCHAR(10)
did the trick.
Thanks Bryan!
TutorialsPoint说要这样做:
ALTER TABLE INVOICE_RECORDS MODIFY SERIAL_NUMBER VARCHAR(10) NOT NULL
尝试这个。
ALTER TABLE INVOICE_RECORDS ADD CONSTRAINT INVOICE_SERIAL_NUM NOT NULL(SERIAL_NUMBER);
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