instance pi

typeside t
schema s2 : t
schema s1 : t
mapping m : s1 -> s2
instance i : s1
----------------------------------
instance (pi m i) : s2
	
Performs a pi or join-all operation along a mapping. It is recommended to use eval of queries instead, because pi has non-intuitive semantics and is computationally intractable.

Appears in:

All_Syntax

Options:

allow_empty_sorts_unsafe
always_reload
completion_compose
completion_filter_subsumed
completion_precedence
completion_sort
completion_syntactic_ac
completion_unfailing
dont_verify_is_appropriate_for_prover_unsafe
e_path
eval_approx_sql_unsafe
eval_join_selectivity
eval_max_plan_depth
eval_max_temp_size
eval_reorder_joins
eval_sql_persistent_indices
eval_use_indices
eval_use_sql_above
maedmax_path
num_threads
program_allow_nonconfluence_unsafe
program_allow_nontermination_unsafe
prover
prover_simplify_max
query_remove_redundancy
second_prover
start_ids_at
talg_reduction
timeout
varchar_length