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object JdbcEngine extends Serializable

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  1. final case class TableDdl(createSql: String, pingSql: Option[String] = None) extends Product with Serializable

    A descriptor of the specific SQL DDL statements required to manage a specific Comet table in a JDBC-accessible database engine

    A descriptor of the specific SQL DDL statements required to manage a specific Comet table in a JDBC-accessible database engine

    createSql

    the SQL Create Table statement with the database-specific type, constraints etc. tacked on.

    pingSql

    a cheap SQL query whose results are irrelevant but guaranteed to trigger an error in case the table is absent

    Note

    pingSql is optional, and will default to select * from name where 1=0 as Spark SQL does

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