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Fixes ADD {PRIMARY KEY/UNIQUE} USING INDEX cmd (#6647) 

This change allows creating a constraint without a name using an index.
The index name will be used as the constraint name the same way postgres
handles it.
Fixes issue #6644

This commit also cleans up some leftovers from nameless constraint checks.
With this commit, we now fully support adding all nameless constraints
directly to a table.

Co-authored-by: naisila <nicypp@gmail.com>
pull/6633/head^2
Emel Şimşek 2023-01-25 21:28:07 +03:00 committed by GitHub
parent 2169e0222b
commit 24f6136f72
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 200 additions and 94 deletions
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38
src/backend/distributed/commands/table.c
View File

@ -956,11 +956,15 @@ PreprocessAlterTableAddConstraint(AlterTableStmt *alterTableStatement, Oid
relationId, relationId,
Constraint *constraint) Constraint *constraint)
{ {
/* We should only preprocess an ADD CONSTRAINT command if we are changing the it. /*
* We should only preprocess an ADD CONSTRAINT command if we have empty conname
* This only happens when we have to create a constraint name in citus since the client does * This only happens when we have to create a constraint name in citus since the client does
* not specify a name. * not specify a name.
* indexname should also be NULL to make sure this is not an
* ADD {PRIMARY KEY, UNIQUE} USING INDEX command
* which doesn't need a conname since the indexname will be used
*/ */
Assert(constraint->conname == NULL); Assert(constraint->conname == NULL && constraint->indexname == NULL);
Relation rel = RelationIdGetRelation(relationId); Relation rel = RelationIdGetRelation(relationId);
@ -1269,7 +1273,13 @@ PreprocessAlterTableStmt(Node *node, const char *alterTableCommand,
constraint); constraint);
} }
} }
else if (constraint->conname == NULL) /*
* When constraint->indexname is not NULL we are handling an
* ADD {PRIMARY KEY, UNIQUE} USING INDEX command. In this case
* we do not have to create a name and change the command.
* The existing index name will be used by the postgres.
*/
else if (constraint->conname == NULL && constraint->indexname == NULL)
{ {
if (ConstrTypeCitusCanDefaultName(constraint->contype)) if (ConstrTypeCitusCanDefaultName(constraint->contype))
{ {
@ -3326,8 +3336,6 @@ ErrorIfUnsupportedAlterTableStmt(AlterTableStmt *alterTableStatement)
case AT_AddConstraint: case AT_AddConstraint:
{ {
Constraint *constraint = (Constraint *) command->def;
/* we only allow constraints if they are only subcommand */ /* we only allow constraints if they are only subcommand */
if (commandList->length > 1) if (commandList->length > 1)
{ {
@ -3337,26 +3345,6 @@ ErrorIfUnsupportedAlterTableStmt(AlterTableStmt *alterTableStatement)
errhint("You can issue each subcommand separately"))); errhint("You can issue each subcommand separately")));
} }
/*
* We will use constraint name in each placement by extending it at
* workers. Therefore we require it to be exist.
*/
if (constraint->conname == NULL)
{
/*
* We support ALTER TABLE ... ADD PRIMARY ... commands by creating a constraint name
* and changing the command into the following form.
* ALTER TABLE ... ADD CONSTRAINT <constaint_name> PRIMARY KEY ...
*/
if (ConstrTypeCitusCanDefaultName(constraint->contype) == false)
{
ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg(
"cannot create constraint without a name on a "
"distributed table")));
}
}
break; break;
} }

8
src/backend/distributed/relay/relay_event_utility.c
View File

@ -177,10 +177,18 @@ RelayEventExtendNames(Node *parseTree, char *schemaName, uint64 shardId)
*/ */
if (!PartitionedTable(relationId) || if (!PartitionedTable(relationId) ||
constraint->contype != CONSTR_CHECK) constraint->contype != CONSTR_CHECK)
{
/*
* constraint->conname could be empty in the case of
* ADD {PRIMARY KEY, UNIQUE} USING INDEX.
* In this case, already extended index name will be used by postgres.
*/
if (constraint->conname != NULL)
{ {
AppendShardIdToName(constraintName, shardId); AppendShardIdToName(constraintName, shardId);
} }
} }
}
else if (command->subtype == AT_DropConstraint || else if (command->subtype == AT_DropConstraint ||
command->subtype == AT_ValidateConstraint) command->subtype == AT_ValidateConstraint)
{ {

204
src/test/regress/expected/multi_alter_table_add_constraints_without_name.out
View File

@ -44,6 +44,73 @@ SELECT con.conname
\c - - :master_host :master_port \c - - :master_host :master_port
ALTER TABLE AT_AddConstNoName.products DROP CONSTRAINT products_pkey; ALTER TABLE AT_AddConstNoName.products DROP CONSTRAINT products_pkey;
-- Check "ADD PRIMARY KEY USING INDEX ..."
CREATE TABLE AT_AddConstNoName.tbl(col1 int, col2 int);
SELECT create_distributed_table('AT_AddConstNoName.tbl', 'col1');
create_distributed_table
---------------------------------------------------------------------
(1 row)
CREATE UNIQUE INDEX my_index ON AT_AddConstNoName.tbl(col1);
ALTER TABLE AT_AddConstNoName.tbl ADD PRIMARY KEY USING INDEX my_index;
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname = 'tbl';
conname
---------------------------------------------------------------------
my_index
(1 row)
\c - - :public_worker_1_host :worker_1_port
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname LIKE 'tbl%' ORDER BY con.conname ASC;
conname
---------------------------------------------------------------------
my_index
my_index_5410004
my_index_5410005
my_index_5410006
my_index_5410007
(5 rows)
\c - - :master_host :master_port
ALTER TABLE AT_AddConstNoName.tbl DROP CONSTRAINT my_index;
-- Check "ADD UNIQUE USING INDEX ..."
CREATE UNIQUE INDEX my_index ON AT_AddConstNoName.tbl(col1);
ALTER TABLE AT_AddConstNoName.tbl ADD UNIQUE USING INDEX my_index;
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname = 'tbl';
conname
---------------------------------------------------------------------
my_index
(1 row)
\c - - :public_worker_1_host :worker_1_port
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname LIKE 'tbl%'ORDER BY con.conname ASC;
conname
---------------------------------------------------------------------
my_index
my_index_5410004
my_index_5410005
my_index_5410006
my_index_5410007
(5 rows)
\c - - :master_host :master_port
ALTER TABLE AT_AddConstNoName.tbl DROP CONSTRAINT my_index;
-- Check "ADD PRIMARY KEY DEFERRABLE" -- Check "ADD PRIMARY KEY DEFERRABLE"
ALTER TABLE AT_AddConstNoName.products ADD PRIMARY KEY(product_no) DEFERRABLE; ALTER TABLE AT_AddConstNoName.products ADD PRIMARY KEY(product_no) DEFERRABLE;
\c - - :public_worker_1_host :worker_1_port \c - - :public_worker_1_host :worker_1_port
@ -429,10 +496,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410006 verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410010
verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410007 verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410011
verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410008 verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410012
verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410009 verylonglonglonglonglonglonglonglonglonglonglo_559ab79d_5410013
verylonglonglonglonglonglonglonglonglonglonglonglonglonglo_pkey verylonglonglonglonglonglonglonglonglonglonglonglonglonglo_pkey
(5 rows) (5 rows)
@ -472,10 +539,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410006 verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410010
verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410007 verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410011
verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410008 verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410012
verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410009 verylonglonglonglonglonglonglonglonglonglonglo_cd61b0cf_5410013
verylonglonglonglonglonglonglonglonglonglonglong_product_no_key verylonglonglonglonglonglonglonglonglonglonglong_product_no_key
(5 rows) (5 rows)
@ -515,10 +582,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410006 verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410010
verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410007 verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410011
verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410008 verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410012
verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410009 verylonglonglonglonglonglonglonglonglonglonglo_057ed027_5410013
verylonglonglonglonglonglonglonglonglonglonglon_product_no_excl verylonglonglonglonglonglonglonglonglonglonglon_product_no_excl
(5 rows) (5 rows)
@ -558,10 +625,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'very%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410006 verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410010
verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410007 verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410011
verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410008 verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410012
verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410009 verylonglonglonglonglonglonglonglonglonglonglo_d943e063_5410013
verylonglonglonglonglonglonglonglonglonglonglonglonglongl_check verylonglonglonglonglonglonglonglonglonglonglonglonglongl_check
(5 rows) (5 rows)
@ -618,10 +685,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410014 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410018
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410015 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410019
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410016 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410020
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410017 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410021
longlonglonglonglonglonglonglonglonglonglonglonglonglonglo_pkey longlonglonglonglonglonglonglonglonglonglonglonglonglonglo_pkey
(5 rows) (5 rows)
@ -664,10 +731,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410014 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410018
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410015 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410019
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410016 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410020
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410017 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410021
longlonglonglonglonglonglonglonglonglonglongl_partition_col_key longlonglonglonglonglonglonglonglonglonglongl_partition_col_key
(5 rows) (5 rows)
@ -820,7 +887,7 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
citus_local_table_pkey citus_local_table_pkey
citus_local_table_pkey_5410022 citus_local_table_pkey_5410026
(2 rows) (2 rows)
SELECT create_distributed_table('AT_AddConstNoName.citus_local_table','id'); SELECT create_distributed_table('AT_AddConstNoName.citus_local_table','id');
@ -848,10 +915,10 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
citus_local_table_pkey citus_local_table_pkey
citus_local_table_pkey_5410023 citus_local_table_pkey_5410027
citus_local_table_pkey_5410024 citus_local_table_pkey_5410028
citus_local_table_pkey_5410025 citus_local_table_pkey_5410029
citus_local_table_pkey_5410026 citus_local_table_pkey_5410030
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
@ -879,10 +946,10 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
citus_local_table_id_key citus_local_table_id_key
citus_local_table_id_key_5410023 citus_local_table_id_key_5410027
citus_local_table_id_key_5410024 citus_local_table_id_key_5410028
citus_local_table_id_key_5410025 citus_local_table_id_key_5410029
citus_local_table_id_key_5410026 citus_local_table_id_key_5410030
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
@ -920,10 +987,10 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
citus_local_table_id_excl citus_local_table_id_excl
citus_local_table_id_excl_5410023 citus_local_table_id_excl_5410027
citus_local_table_id_excl_5410024 citus_local_table_id_excl_5410028
citus_local_table_id_excl_5410025 citus_local_table_id_excl_5410029
citus_local_table_id_excl_5410026 citus_local_table_id_excl_5410030
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
@ -961,10 +1028,10 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
citus_local_table_check citus_local_table_check
citus_local_table_check_5410023 citus_local_table_check_5410027
citus_local_table_check_5410024 citus_local_table_check_5410028
citus_local_table_check_5410025 citus_local_table_check_5410029
citus_local_table_check_5410026 citus_local_table_check_5410030
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
@ -1014,10 +1081,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410034 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410038
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410035 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410039
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410036 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410040
longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410037 longlonglonglonglonglonglonglonglonglonglonglo_9e4e3069_5410041
longlonglonglonglonglonglonglonglonglonglonglonglonglonglo_pkey longlonglonglonglonglonglonglonglonglonglonglonglonglonglo_pkey
(5 rows) (5 rows)
@ -1051,10 +1118,10 @@ SELECT con.conname
WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC; WHERE rel.relname LIKE 'longlonglonglonglonglonglonglonglong%' ORDER BY con.conname ASC;
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410034 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410038
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410035 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410039
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410036 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410040
longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410037 longlonglonglonglonglonglonglonglonglonglongl__d794d9f1_5410041
longlonglonglonglonglonglonglonglonglonglongl_partition_col_key longlonglonglonglonglonglonglonglonglonglongl_partition_col_key
(5 rows) (5 rows)
@ -1144,10 +1211,10 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
2nd table_pkey 2nd table_pkey
2nd table_pkey_5410042 2nd table_pkey_5410046
2nd table_pkey_5410043 2nd table_pkey_5410047
2nd table_pkey_5410044 2nd table_pkey_5410048
2nd table_pkey_5410045 2nd table_pkey_5410049
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
@ -1174,10 +1241,10 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
2nd table_2nd id_3rd id_key 2nd table_2nd id_3rd id_key
2nd table_2nd id_3rd id_key_5410042 2nd table_2nd id_3rd id_key_5410046
2nd table_2nd id_3rd id_key_5410043 2nd table_2nd id_3rd id_key_5410047
2nd table_2nd id_3rd id_key_5410044 2nd table_2nd id_3rd id_key_5410048
2nd table_2nd id_3rd id_key_5410045 2nd table_2nd id_3rd id_key_5410049
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
@ -1204,10 +1271,10 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
2nd table_2nd id_excl 2nd table_2nd id_excl
2nd table_2nd id_excl_5410042 2nd table_2nd id_excl_5410046
2nd table_2nd id_excl_5410043 2nd table_2nd id_excl_5410047
2nd table_2nd id_excl_5410044 2nd table_2nd id_excl_5410048
2nd table_2nd id_excl_5410045 2nd table_2nd id_excl_5410049
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
@ -1234,20 +1301,21 @@ SELECT con.conname
conname conname
--------------------------------------------------------------------- ---------------------------------------------------------------------
2nd table_check 2nd table_check
2nd table_check_5410042 2nd table_check_5410046
2nd table_check_5410043 2nd table_check_5410047
2nd table_check_5410044 2nd table_check_5410048
2nd table_check_5410045 2nd table_check_5410049
(5 rows) (5 rows)
\c - - :master_host :master_port \c - - :master_host :master_port
ALTER TABLE AT_AddConstNoName."2nd table" DROP CONSTRAINT "2nd table_check"; ALTER TABLE AT_AddConstNoName."2nd table" DROP CONSTRAINT "2nd table_check";
DROP EXTENSION btree_gist; DROP EXTENSION btree_gist;
DROP SCHEMA AT_AddConstNoName CASCADE; DROP SCHEMA AT_AddConstNoName CASCADE;
NOTICE: drop cascades to 6 other objects NOTICE: drop cascades to 7 other objects
DETAIL: drop cascades to table at_addconstnoname.products_ref_2 DETAIL: drop cascades to table at_addconstnoname.tbl
drop cascades to table at_addconstnoname.products_ref_2
drop cascades to table at_addconstnoname.products_ref_3 drop cascades to table at_addconstnoname.products_ref_3
drop cascades to table at_addconstnoname.verylonglonglonglonglonglonglonglonglonglonglonglonglonglonglon drop cascades to table at_addconstnoname.verylonglonglonglonglonglonglonglonglonglonglonglonglonglonglon
drop cascades to table at_addconstnoname.products_ref_3_5410005 drop cascades to table at_addconstnoname.products_ref_3_5410009
drop cascades to table at_addconstnoname.citus_local_partitioned_table drop cascades to table at_addconstnoname.citus_local_partitioned_table
drop cascades to table at_addconstnoname."2nd table" drop cascades to table at_addconstnoname."2nd table"

42
src/test/regress/sql/multi_alter_table_add_constraints_without_name.sql
View File

@ -36,6 +36,48 @@ SELECT con.conname
\c - - :master_host :master_port \c - - :master_host :master_port
ALTER TABLE AT_AddConstNoName.products DROP CONSTRAINT products_pkey; ALTER TABLE AT_AddConstNoName.products DROP CONSTRAINT products_pkey;
-- Check "ADD PRIMARY KEY USING INDEX ..."
CREATE TABLE AT_AddConstNoName.tbl(col1 int, col2 int);
SELECT create_distributed_table('AT_AddConstNoName.tbl', 'col1');
CREATE UNIQUE INDEX my_index ON AT_AddConstNoName.tbl(col1);
ALTER TABLE AT_AddConstNoName.tbl ADD PRIMARY KEY USING INDEX my_index;
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname = 'tbl';
\c - - :public_worker_1_host :worker_1_port
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname LIKE 'tbl%' ORDER BY con.conname ASC;
\c - - :master_host :master_port
ALTER TABLE AT_AddConstNoName.tbl DROP CONSTRAINT my_index;
-- Check "ADD UNIQUE USING INDEX ..."
CREATE UNIQUE INDEX my_index ON AT_AddConstNoName.tbl(col1);
ALTER TABLE AT_AddConstNoName.tbl ADD UNIQUE USING INDEX my_index;
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname = 'tbl';
\c - - :public_worker_1_host :worker_1_port
SELECT con.conname
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE rel.relname LIKE 'tbl%'ORDER BY con.conname ASC;
\c - - :master_host :master_port
ALTER TABLE AT_AddConstNoName.tbl DROP CONSTRAINT my_index;
-- Check "ADD PRIMARY KEY DEFERRABLE" -- Check "ADD PRIMARY KEY DEFERRABLE"
ALTER TABLE AT_AddConstNoName.products ADD PRIMARY KEY(product_no) DEFERRABLE; ALTER TABLE AT_AddConstNoName.products ADD PRIMARY KEY(product_no) DEFERRABLE;