Valid, you should issue a simple query, such as "SELECTġ". If you need to determine if the connection is still Returns true if 'closed()' has been called on theĬonnection. In accordance with the JDBC specification, it only Method does not "ping" the server to determine if it isĪlive. Unlike older versions of MM.MySQL the 'isClosed()' This, you should use the tClob() method to The Clob implementation does not allow in-place Then delay loading the actual Blob data until you retrieve theīlob and call retrieval methods (getInputStream(), getBytes(), Table, the table must have a primary key, and the SELECT mustĬover all columns that make up the primary key. Use a column alias with the value of the column set to theĪctual name of the Blob column in the SELECT that you write to Starting with Connector/J version 3.1.0, you can emulateīlobs with locators by adding the property tBlob() or ResultSet.updateBlob() (in theĬase of updatable result sets) methods to save changes back to Modification (they are 'copies', as reported by theĭatabaseMetaData.locatorsUpdateCopies() method). The Blob implementation does not allow in-place
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