DistSQLExecModeFromString converts a string into a DistSQLExecMode.

MakeSearchPath returns a new SearchPath struct.

NewSequenceState creates a SequenceState.

OptimizerModeFromString converts a string into a OptimizerMode.

DistSQLAlways means that we only use distSQL; unsupported queries fail.

DistSQLAuto means that we automatically decide on a case-by-case basis if we use distSQL.

DistSQLOff means that we never use distSQL.

DistSQLOn means that we use distSQL for queries that are supported.

OptimizerAlways means that we attempt to use the optimizer always, even for unsupported statements which result in errors.

OptimizerOff means that we don't use the optimizer.

OptimizerOn means that we use the optimizer for all supported statements.

PgCatalogName is the name of the pg_catalog system database.

SearchPath represents a list of namespaces to search builtins in.

SequenceState stores session-scoped state used by sequence builtins.

SessionData contains session parameters.

DistSQLExecMode controls if and when the Executor uses DistSQL.

OptimizerMode controls if and when the Executor uses the optimizer.