object QueryRunner extends App
The QueryRunner object provides a command prompt for querying a database.
Commands and their usage:
- 'prefix package' - set the package prefix for convenience, e.g., scalation.columnar.db 2. 'create createTable' - execute the create table(s) statement, e.g., CreateTable1 3. 'load table' - load the table 4. 'save table' - save the table 5. 'query queryStat' - execute the compiled query statement, e.g., Query1 6. 'test queryStat' - perfoamnce test the complier query statement 7. 'update updateStmt' - execute the compiled update statement, e.g., Update1 8. 'show table' - show the contents of the table 9. 'help' - list the commands 10. 'quit' - quit the current QueryRunner session
> runMain scalation.columnar_db.QueryRunner
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Print the
QueryRunnercommands. - final def isInstanceOf[T0]: Boolean
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- def loadStatement(name: String): Query
Load the compiled statement (query or update).
Load the compiled statement (query or update).
- name
the name of the compile query/update
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