DeltaSqlAstBuilder¶

DeltaSqlAstBuilder is a command builder for the Delta SQL statements (described in DeltaSqlBase.g4 ANTLR grammar).

DeltaSqlParser is used by DeltaSqlParser.

SQL Statement	Logical Command
ALTER TABLE ADD CONSTRAINT	AlterTableAddConstraint
ALTER TABLE DROP CONSTRAINT	AlterTableDropConstraint
ALTER TABLE DROP FEATURE	AlterTableDropFeature
CONVERT TO DELTA	ConvertToDeltaCommand
DESCRIBE DETAIL	DescribeDeltaDetailCommand
DESCRIBE HISTORY	DescribeDeltaHistoryCommand
GENERATE	DeltaGenerateCommand
OPTIMIZE	OptimizeTableCommand
RESTORE	RestoreTableStatement
VACUUM	VacuumTableCommand

maybeTimeTravelChild¶

maybeTimeTravelChild(
  ctx: TemporalClauseContext,
  child: LogicalPlan): LogicalPlan

maybeTimeTravelChild creates a TimeTravel (with sql ID).

maybeTimeTravelChild is used when:

visitClone(
  ctx: CloneContext): LogicalPlan

visitClone creates a CloneTableStatement logical operator.

visitClusterBy(
  ctx: ClusterByContext): LogicalPlan

visitClusterBy creates a ClusterByPlan (with a ClusterBySpec) for CLUSTER BY clause.

CLUSTER BY (interleave, [interleave]*)

interleaves are the column names to cluster by.

Note

CLUSTER BY is similar to ZORDER BY syntax-wise.

visitDescribeDeltaHistory(
  ctx: DescribeDeltaHistoryContext): LogicalPlan

visitDescribeDeltaHistory creates a DescribeDeltaHistory logical operator for the following SQL statement:

(DESC | DESCRIBE) HISTORY (path | table)
  (LIMIT limit)?

visitReorgTable(
  ctx: ReorgTableContext): AnyRef

visitReorgTable creates a DeltaReorgTable logical operator.