TableFunctionRegistry¶

TableFunctionRegistry is an extension of the FunctionRegistryBase abstraction for function registries that manage table-valued functions (table functions) that produce a LogicalPlan.

Implementations¶

EmptyTableFunctionRegistry
SimpleTableFunctionRegistry

Built-In Table-Valued Functions¶

Name	Logical Operator	Generator Expression
`range`	`Range`
`explode`		`Explode`
`explode_outer`		`Explode`
`inline`		Inline
`inline_outer`		Inline
`json_tuple`		`JsonTuple`
`posexplode`		`PosExplode`
`posexplode_outer`		`PosExplode`
`stack`		`Stack`

SimpleTableFunctionRegistry¶

builtin: SimpleTableFunctionRegistry

TableFunctionRegistry creates a system-wide SimpleTableFunctionRegistry and registers all the built-in table-valued functions.

import org.apache.spark.sql.catalyst.analysis.TableFunctionRegistry
import org.apache.spark.sql.catalyst.analysis.SimpleTableFunctionRegistry
assert(TableFunctionRegistry.builtin.isInstanceOf[SimpleTableFunctionRegistry])

import org.apache.spark.sql.catalyst.analysis.TableFunctionRegistry
TableFunctionRegistry.builtin.listFunction

builtin is used when:

TableFunctionRegistry utility is used for the functionSet
SessionCatalog is requested to isBuiltinFunction, lookupBuiltinOrTempTableFunction, resolveBuiltinOrTempTableFunction, reset
BaseSessionStateBuilder is requested for the TableFunctionRegistry

Accessing TableFunctionRegistry¶

TableFunctionRegistry is available using BaseSessionStateBuilder.tableFunctionRegistry.

SessionCatalog¶

TableFunctionRegistry is used to create the following: