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sql: Allow unique-without-index not valid constraint in table creation #115354

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Dec 7, 2023
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sql: Allow unique-without-index not valid constraint in table creation #115354

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27 changes: 27 additions & 0 deletions pkg/sql/logictest/testdata/logic_test/create_table
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Original file line number Diff line number Diff line change
Expand Up @@ -1039,3 +1039,30 @@ public generated_by_default_t_notnull_b_seq INT8
public generated_always_t_notnull_b_seq INT8
public generated_by_default_t_b_seq INT8
public generated_always_t_b_seq INT8

subtest end

# This subtest ensures we can create not valid unique-without-index constraint
# during table creation, which will be treated as a "normal"
# unique-without-index constraint (meaning the NOT VALID will be dropped).
subtest 115352

statement ok
SET experimental_enable_unique_without_index_constraints = true

statement ok
CREATE TABLE t_115352 (i INT, UNIQUE WITHOUT INDEX (i) NOT VALID);

# NOT VALID constraint specified within `CREATE TABLE` is a no-op and does not
# skip validation.
query T
SELECT create_statement FROM [SHOW CREATE t_115352];
----
CREATE TABLE public.t_115352 (
i INT8 NULL,
rowid INT8 NOT VISIBLE NOT NULL DEFAULT unique_rowid(),
CONSTRAINT t_115352_pkey PRIMARY KEY (rowid ASC),
CONSTRAINT unique_i UNIQUE WITHOUT INDEX (i)
)

subtest end
2 changes: 1 addition & 1 deletion pkg/sql/parser/sql.y
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Original file line number Diff line number Diff line change
Expand Up @@ -9821,7 +9821,7 @@ table_elem:
{
def := $1.constraintDef()
valBehavior := $2.validationBehavior()
if u, ok := def.(*tree.UniqueConstraintTableDef); ok && valBehavior == tree.ValidationSkip {
if u, ok := def.(*tree.UniqueConstraintTableDef); ok && valBehavior == tree.ValidationSkip && !u.WithoutIndex {
typ := "PRIMARY KEY"
if !u.PrimaryKey {
typ = "UNIQUE"
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