* views, I learned that constraints can be defined in another schema. table_name AS foreign_table_name, ccu. In psql all schemas can be listed by executing the next command: /dn Nov 22, 2013 · You can group them all in the same alter statement: alter col2 drop not null, You can also retrieve the list of relevant columns from the catalog, if you feel like writing a do block to generate the needed sql. I'd like to figure a better way to list all UNIQUE constraints in a specific schema. pk_column - primary (referenced) table column. cd check-demo. The view referential_constraints contains all referential (foreign key) constraints in the current database. conname AS constraint_name, contype AS constraint_type, conkey AS constrained_columns, confkey AS referenced_columns, confrelid::regclass AS referenced_table, conrelid::regclass AS constrained_table, CASE. no - position of the column in key. column_name, c. While using psql, simply use command \dn. ALTER TABLE subject. To retrieve a list of all schemas in a PostgreSQL database, you can use the following SQL query: SELECT schema_name FROM information_schema. This will describe all tables by name. table_schema as table_schema, ccu. constraint_table_usage ctu on ctu. Aug 5, 2016 · 0. One row represents one check constraint; Scope of rows: query returns all check constraints in the database; Ordered by table schema and table name; Sample results. org/docs/9. ) To provide a straight bit of SQL, you can list the primary key columns and their types with: SELECT c. pg_constraint #. Thus \di certainly stands for "show me this databases indexes". conname ; Update 2016-04-14: Not null constraints are not to be found in the pg_constraint table. check_constraint_routine_usage that provide this information. tables to get a listing of every table being managed by Postgres for a particular database. There is no simple way to temporarily disable constraints; you'd have to drop and recreate them yourself. 52. AND constraint_name = '<your constraint name>'; If the table is held in a schema that is not your default schema then you might need to replace the views with: all_cons_columns. adding to the where clause: AND owner = '<schema owner of the table>'. data_type. A not-null constraint is always written as a column constraint. constraint_column_usage AS ccu USING (constraint_schema, constraint_name) Jan 30, 2023 · 1. Typing \diS will list all indexes used systemwide, which means you get all the pg_catalog indexes as well. The current schema search path is used to find the first matching name if no schema name is specified. With that check constraint in place, we re-run the same test cases: \di is the "small brother" of the \d command which will list all relations of the current database. Every column constraint is equivalent to some table constraint. key_column_usage AS kcu: ON tc. conname as constraint_name. Jan 5, 2024 · Let’s start with the simplest way to list sequences in a PostgreSQL database using psql interactive commands. * \dt+ Sep 3, 2023 · By Admin September 3, 2023. table_constraints view, which adds column such as constaint_schema to denote this: For foreign keys, this makes sense: it is possible to refer to a table in another schema. Oct 18, 2022 · 2. A more thorough answer can be found here, List tables in a PostgreSQL schema. And that covers the end-to-end workflow for schemas in PostgreSQL – from creating, listing, querying to deleting them when done. Basically, information schema is a set of views of pg_catalog. Incorrect search path – schemas including object not referenced properly. You can also add a where table_schema = 'information_schema' to see just the tables in the information schema. ) Not-null constraints are represented in the pg_attribute catalog, not here. So, is there any other way to drop all . PostgreSQL schemas CREATE TABLE will create a new, initially empty table in the current database. Restore only objects that are in the named schema. ) that are contained in the schema, and in turn all objects that depend on those objects. relname = '<table name>'; Jun 27, 2024 · The view table_constraints contains all constraints belonging to tables that the current user owns or has some privilege other than SELECT on. GitHub Gist: instantly share code, notes, and snippets. Open up the postgres terminal with the databse you would like: psql dbname (run this line in a terminal) then, run this command in the postgres environment. several points: If you want to see what query is used for psql shortcut, run psql -E (with -E key) select *from pg_namespace will give you list of schemas. Open terminal or command line and run the following commands: mkdir check-demo. table_name, kcu. In PostgreSQL, the “\d” command and “pg_catalog” schema are used to get the list of table constraints. constraint_name = kcu. pg_dump --schema-only databasename > fname. Using the (ANSI) standard INFORMATION_SCHEMA: SELECT schema_name FROM information_schema. \dt schema_2 will not list all the relations for schema_2. table_constraints. To disable foreign keys and deferrable unique and primary key constraints for a table, you can use. schemata view, which contains information about all the schemas in the current database. relname as source_table , pg_attribute. and. delete_rule. this worked: SELECT dependent_ns. Check constraints will apply to a single row in a table. Column constraints are evaluated after the input is validated against basic type requirements (like making sure a value is a whole number for int columns). Function access issue – execution privileges required for functions. The last number seems to be the ordinal position of the column. oid = pgc. Jun 3, 2019 · constraint_name - name of the constraint in the database; check_clause - SQL expression that defines this check constraint; Rows. nspname as schema_name, t. FROM information_schema. Alternatively you can use pg_constraint to retrieve this information. To empty a table of rows without destroying the table, use DELETE or TRUNCATE. Connect to the psql with command psql --username={userName} {DBName} then you can type the below command to check how many schemas are present in the database: DBName=# \dn. May 9, 2017 · The problem is that doing. Apr 15, 2013 · 68. | Name | Data Type | Description |. The extension offers two functions: We can use those functions in combination with a check constraint to more completely describe our data model. (Column constraints are not treated specially. That will give you definitions in SQL, how the objects might have been created. 4. They are used to determine whether a proposed value for a column is valid or not. Aug 11, 2014 · To view all domains in your database, run in psql \dD[S+] [PATTERN] list domains You can see the list of all psql commands with \?. Name of the database that contains the constraint (always the current database) How to list out User Constraints in PostgreSQL? but it doesn't list out the names of all the constraints. sql. pg_jsonschema is a Postgres extension that can validate json and jsonb data types against a JSON Schema. conrelid INNER JOIN pg_catalog. constraint_schema , ccu. table_name, ccu. join - "=" symbol indicating join operation for pair of columns. table_schema, kcu. In this case, we had to enclose our constraint names in double quotes, i. You can see what are the names of PK constraints for each table and which tables don't have PKs at all Jun 9, 2009 · ALTER TABLE name RENAME CONSTRAINT constraint_name TO new_constraint_name; It turned out that our existing contraints began with "FK_" , i. SELECT con. . Thanks to foreign key constraints stored in a view in information_schema, the user may select any number of tables and the tool will find the correct join settings (thus, the user does not have to add ON table_a. select n. You need to retrieve the table names by running the following query: SELECT *. I was able to list them using this below query from old answers to similar questions: SELECT. confrelid AND ra. Checking object ownership, search paths, and currently assigned privileges can uncover certain errors. constraint_schema = tco Dec 1, 2015 · For our application, we have all schema statements including indexes creation in one file app. constraint_column_usage AS ccu Aug 14, 2018 · Constraints can be retrieved via pg_catalog. pg_namespace nsp ON nsp. Using psql. Aug 9, 2012 · WHERE table_name = '<your table name>'. A not-null constraint is functionally equivalent to creating a check constraint CHECK (column_name IS NOT NULL), but in PostgreSQL creating an explicit not-null constraint is more efficient. answered Mar 29, 2017 at 12:09. column_name, ccu. select *. nspname = '<schema name>' AND rel. 2. constraint_name = tc. Mar 20, 2019 · I tried to combine them (below query) but it just gives result from information_schema and is limited to one database only. Dec 12, 2018 · Query below lists all primary keys constraints (PK) in the database. Conclusion. nspname as source_schema , source_table. size::float / (SELECT size FROM db) * 100 as relative_size. It is a feature of most database systems, and protects users from accidentally (or intentionally!) creating discrepencies in their database. Jun 17, 2018 at 1:11. This will list all tables the current user has access to, not only those that are owned by the current user: select * from information_schema. table_constraints: select *. The check_clause is what I want and this table also gives me the constraint_schema. Looking at the output pg_dump --section=post-data should help, as it contains commands to create all constraints towards the end. Dec 10, 2018 · constraint_name - primary key constraint name; key_columns - list of PK columns separated with ',' Rows. relname as dependent_view , source_ns. table_schema = tbl. do $$ declare r record; BEGIN FOR r IN ( SELECT FORMAT( 'UPDATE pg_constraint SET convalidated=false WHERE conname = ''%I''; ALTER TABLE %I VALIDATE CONSTRAINT %I;', tc. If you want to see detailed information, you may use ‘\ds+’. Next, verify that the schema actually exists in the database. contype IN ( 'c', 'u' ) ORDER BY r. pg_constraint. edited May 23, 2017 at 11:54. pg_constraint stores check, primary key, unique, foreign key, and exclusion constraints on tables. DROP CONSTRAINT subject_details_pk CASCADE; ALTER TABLE subject. The information schema is defined in the SQL standard and can therefore be expected to be portable and remain stable — unlike the system catalogs, which are specific to PostgreSQL and are May 3, 2021 · So, I want to create a different user other than the superuser and give the new user the ability to disable/enable all trigger/constraints for the given schema. Query select kcu. See also: tables with their primary keys. table_schema, tbl. field_1 = table_b. confrelid = 'res_users'::regclass Introduction. Oct 6, 2016 · This will loop through all tables in the old schema and recreate them with data (no constraints, indexes, etc) in the new schema. typname AS enumtype, pg_enum. The “\d” command must be used along with the table name to list the table constraints. list all postgres tables in one particular schema. table_name = tbl. * FROM pg_catalog. attrelid = c. I'll clarify since this is the first result of a google search. table_schema SET CONSTRAINTS with a list of constraint names changes the mode of just those constraints (which must all be deferrable). constraint_schema = tc. pg_get_constraintdef gives you the actual SQL line that is used to create the constraint. Feb 7, 2017 · One can use the following query to list constraints and their details for a certain table. constraint_table_usage. enumlabel AS enumlabel. I had to adapt it to mark before all constraints as not valid. Single coumn keys always have 1, composite keys have 1, 2, n for each column of the key. attname as column_name FROM pg_depend JOIN pg_rewrite ON pg_depend. constraint_catalog sql_identifier. The correct statement to disable all triggers on a table is. FROM schemas; The accepted answer solves the described problem, but the suggested query is not efficient. constraint_schema. One row represents one foreign key. oid JOIN pg_class as dependent_view ON pg_rewrite In postgreSQL we can have same constraint name in different schema with the same table name or different. The correct answer is in the comments of the answer. select * from information_schema. If a schema name is given (for example, CREATE TABLE myschema. See below for examples. table_constraints tco join information_schema. DROP TABLE removes tables from the database. Postgres list all constraints. Oct 1, 2010 · Another way would be to use pg_dump with the "schema only" option. attname AS referencing_column FROM pg_constraint AS c JOIN pg_index AS i ON i. For instance, something like: from pg_catalog. This command will list additional attributes such as type and owner alongside each sequence. One row represents one table in a database; Scope of rows: all tables in a database; Ordered by schema name, table name; Sample results. pg_namespace; 2. conname as constraint_name, ccu. select * from pg_class limit where relnamespace = 'your_schema 35. #. where table_name='my_table'; edit from user829755: For showing DELETE_RULE this can be joined with another table: select tc. In this chapter, we'll work with a sample set of data involving people, tasks they are Object ownership issues – object owner permissions take precedence. The ‘\ds’ meta-command lists all sequences in the current database. Jun 17, 2011 · Show tables of all schemas: \dt *. Only the table owner, the schema owner, and superuser can drop a table. * \dt my_schema. \ds. oid 37. If this succeeds, all triggers that underlie table constraints will be disabled. tc. When you execute this query, it will Jul 24, 2010 · DROP SCHEMA public CASCADE; CREATE SCHEMA public; GRANT ALL ON SCHEMA public TO postgres; GRANT ALL ON SCHEMA public TO public; COMMENT ON SCHEMA public IS 'standard public schema'; Also note to issue these commands in pgAdmin III, I used the Query tool ( magnifying glass icon "Execute abritrary SQL queries") or you could use Plugins-> PSQL Console Dec 12, 2018 · primary_table - primary (rerefenced) table schema and name; fk_columns - list of FK colum names, separated with "," constraint_name - foreign key constraint name; Rows. A schema allows you to organize and namespace database objects within a database. May 28, 2019 · 11. Nov 23, 2022 · You should be able to just run select * from information_schema. Aug 6, 2019 at 19:49. Feb 9, 2022 · Check constraints are a great way to add some simple logic to your data by having the database check something before an insert. mytable ) then the table is created in the specified schema. 34. column_name AS foreign_column_name : FROM : information_schema. table_name , ctu. BE CAREFUL - emphasis above mine. schemata; Have a look at Postgres Docs: The view schemata contains all schemas in the current database that the current user has access to (by way of being the owner or having some privilege). SET CONSTRAINTS with a list of constraint names changes the mode of just those constraints (which must all be deferrable). indexrelid = c. SET CONSTRAINTS ALL changes the mode of all deferrable constraints. Dec 6, 2012 · To list all tables without a primary key, you can use this: select tbl. SET session_replication_role = replica; Both tricks won't work for non-deferrable constraints and check constraints. answered Aug 5, 2016 at 12:07. nspname AS table_schema, r. and a. Query below lists check constraints defined in the database ordered by constraint name. You can do this by querying the system tables in your database management system. When experimenting with the information_schema. table_name, tc. Table 35. SELECT * FROM information_schema. The drawback is that you cannot give explicit names to not-null constraints created this way. objid = pg_rewrite. constraint_name, rc. Scope of rows: all foregin keys in a database Oct 30, 2023 · Delete and cascade drop all objects: DROP SCHEMA my_unused_schema CASCADE; This deletes all tables, functions, etc in the schema automatically. The query result returns two columns, the first show the name of every enum types, the second show the name of every value for each enum type: SELECT pg_type. tables WHERE table_schema = 'public'; This query will retrieve the Jan 17, 2022 · 184. statements CURSOR FOR. * These list all tables of my_schema schema of the current database in detail: \dtS+ my_schema. PostgreSQL used to name constraints silly things like '$1', and if you've got an old database you've been maintaining through upgrades, you likely still have some of those around. datname = t. Create a new database and name it like the former. List of table check constraints in pagila database. The constraints can be queried via pg_constraint. list-file is normally created by editing the output of a previous -l operation. Name of the database that contains the constraint (always the current database) constraint_schema sql May 2, 2023 · The output proves that the pg_catalog. table_constraints Columns. The query giving me the empty response is as simple as possible, shown below: SELECT * FROM information_schema. It will also disable deferrable primary key, unique and exclusion constraints Let's make a few tables we can use for testing. Something like the following may work for you. Before this whole project goes to production, we want to clean up all historically created indexes, then recreate them using: psql -f /path/to/app. Jul 16, 2021 · Currently I tried the below. table_constraints tc. However, a schema belongs to only one database. attrelid::regclass AS referencing_table, la. referential_constraints #. conrelid = cls. relname, c. – Lennart - Slava Ukraini. Apr 24, 2020 · You can query the catalog tables: SELECT la. Column constraints. To access an object in a schema, you need to qualify the object by using the following syntax: schema_name. constraint_name where constraint_type = 'FOREIGN KEY' CREATE TABLE will create a new, initially empty table in the current database. Oct 17, 2016 · CASCADE - Automatically drop objects (tables, functions, etc. Start by creating a project directory for the files that you'll create throughout this guide. Multiple schemas may be specified with multiple -n Apr 13, 2016 · AND c. Feb 21, 2015 · I want to find all child tables corresponding to particular parent table. Drop the database. COPY TO can also copy the results of a SELECT query. Then you can try this to describe a table by fields: \d tablename. Lines can be moved or removed, and can also be commented out by placing a semicolon (;) at the start of the line. ALTER TABLE atable DISABLE TRIGGER ALL; This will disable all triggers and foreign key constraints defined on the table, since foreign key constraints are implemented by system triggers in PostgreSQL. DROP TABLE always removes any indexes, rules, triggers, and constraints that exist for the target table. For those googlers who were looking to list all columns with a NOT NULL constraint: SELECT table_name, column_name FROM information_schema. all_constraints. Data Types. tables where table_schema not in ('pg_catalog', 'information_schema') and table_schema not like 'pg_toast%' (I'm not entirely sure the not like 'pg_toast%' is actually needed though. Description. May 1, 2018 · 3. pg_class rel ON rel. sql Hope this helps. Below is the SQL query you can use to show all the tables: SELECT table_name FROM information_schema. table_schema AS foreign_table_schema, SET CONSTRAINTS with a list of constraint names changes the mode of just those constraints (which must all be deferrable). Obviously you'll need to recreate the schema afterwards. fk_column - foreign table column. Jan 7, 2015 · Here is the function I used: CREATE OR REPLACE FUNCTION truncate_schema(schema IN VARCHAR) RETURNS void AS $$. columns WHERE table_schema = 'public' AND is_nullable = 'NO';. Next, make sure that your PostgreSQL database server is running. Maybe you should raise this issue with the import tool producers. Aug 19, 2022 · pg_jsonschema. This lists all tables of public schema of the current database: \dt This lists all tables of public schema of the current database in detail: \dt+ These list all tables of my_schema schema of the current database: \dtS my_schema. To just drop all tables in the current schema, you can use this script: primary_table - primary (referenced) table schema and name. tables t on db. table_schema = 'public 1. You can get the list of all schemas using SQL with the ANSI standard of INFORMATION_SCHEMA: or. The view table_constraints contains all constraints belonging to tables that the current user owns or has some privilege other than SELECT on. DBName=# help. DROP CONSTRAINT subject_foreign_fk CASCADE; As you can see, I have to write line by line across different tables (and manually find out which table is parent and which table is child etc). Right-click the new database -> restore -> select the backup, select "Schema only". 53. Laurenz Albe. WHERE table_type = 'BASE TABLE' AND table_schema = schema; BEGIN. This is reflected in the information_schema. 13. conrelid AND la. Apr 2, 2018 · How to list all available schemas in PostgreSQL? 1. table_name from information_schema. That information is available in information_schema . DECLARE. an upper-case prefix. Aug 31, 2023 · To list all the tables in a PostgreSQL database, you can query the information_schema database which contains metadata about all the tables and other objects in the database. table_constraints AS tc : JOIN information_schema. Mar 19, 2013 · You can use the function pg_get_constraintdef(constraint_oid) in a query like the following: SELECT conrelid::regclass AS table_from , conname , pg_get_constraintdef(oid) FROM pg_constraint WHERE contype IN ('f', 'p ') AND connamespace = 'public'::regnamespace -- your schema here ORDER BY conrelid::regclass::text, contype DESC; Feb 24, 2022 · This is despite the fact that I know that there are many constraints, particularly foreign-key constraints, in the Postgresql database that I am using. Query select pgc. table_schema, tc. Change table_schema = 'public' as needed. 50. WHERE table_name = 'your_table'. table_name FROM information_schema. pg_constraint con INNER JOIN pg_catalog. Sep 7, 2010 · 40. The catalog pg_constraint stores check, primary key, unique, foreign key, and exclusion constraints on tables. table_schema from pg_database db inner join information_schema. Using psql. Useful to clean up old schemas completely. However, it does not give the table that this constraint is defined on. nspname as dependent_schema , dependent_view. table_constraints WHERE table_name='table_name'; When I do this, columns that have a NOT NULL constraint will show up something like this: 2200_77911989_1_not_null The not_null part is obviously showing a NOT NULL constraint. * \dt+ 37. constraint_column_usage ccu Dec 16, 2012 · SELECT tc. table_constraints tc inner join information_schema. where attrelid = 'tbl'::regclass. relname AS table_name, null::text AS constraint_name, 'Not Null'::text AS null_condition, Jun 19, 2022 · You have to JOIN pg_constraint to pg_attribute and un nest the column arrays (could be compound keys) to get the referenced column name in the base table. create schema scratch; create table scratch. * Note, if no tables are found it will warn you but if some schemas do not have relations or do not exist at all they are just ignored (this is good for me, not sure if it is desired effect for you). e. Column constraints are constraints attached to a single column. html. a ( test_n integer not null references test (n), incept_date date not null default current_date, primary key (test_n, incept_date) ); create table b ( test_n integer not null references test (n), incept_date date not Jan 15, 2015 · 3. oid = con. Start time should be less than the end time. -n schema--schema=schema. So I tried this: CREATE USER "MY_USER" WITH PASSWORD 'password'; GRANT ALL PRIVILEGES ON DATABASE postgres to "MY_USER"; create schema "MY_SCHEMA"; GRANT ALL PRIVILEGES ON ALL TABLES IN Description. Tables are included in pg_class and columns in pg_attributes. check_constraint_routine_usage and tweak it. For example, in PostgreSQL, you can use the following SQL query to list all schemas in the database: SELECT schema_name. NOT NULL can also be enforced via a CHECK constraint, I beleive you can find that in the information_scjema as well. relname as table_name, c. Using SQL Query. Nov 25, 2014 · SELECT * FROM information_schema. 6/infoschema-columns. table_constraints tc right JOIN information_schema. Community Bot. key_column_usage kcu where kcu. 2. constraint_name ) AS x FROM information_schema. table_constraints. select * from pg_class limit where relnamespace = 'your_schema'::regnamespace will give you all schema relations. The pg_attribute table has that information: SELECT nr. Column Type. * Finally show tables of selected schemas (here public and custom 'acl' schemas): \dt (public|acl). Dec 3, 2018 · It looks like that there is already a view called information_schema. Column constraints are not treated specially. edited Nov 3, 2014 at 11:04. from information_schema. The suggested solution didn't work for me with postgresql 9. : Apr 8, 2014 · The solution proposed By Evan Carroll was not working for me. constraint_name, tc. table_name and kcu. pg_constraint. Apr 29, 2021 · The other solutions are not guaranteed to work in postgresql, as the constraint_name is not guaranteed to be unique; thus you will get false positives. conkey[1] JOIN pg_attribute AS ra ON ra. SELECT table_name FROM information_schema. connamespace join pg_class cls on pgc. pg_constraint successfully retrieves the constraint name and its respective type. Aug 6, 2019 · For not null you can check information_schema. schemata; Another option is SELECT nspname FROM pg_catalog. column_name,', ') as key_columns from information_schema. table_constraints WHERE table_name='my_table' AND constraint_type='UNIQUE'; Jan 30, 2014 · 15. ALTER TABLE DISABLE TRIGGER ALL; To disable all such constraints for the duration of a database session, you can. Check this query to see them organized by table. table_name, tco. conindid JOIN pg_attribute AS la ON la. columns: postgresql. key_column_usage kcu on kcu. tables tbl where table_type = 'BASE TABLE' and table_schema not in ('pg_catalog', 'information_schema') and not exists (select 1 from information_schema. by adding constraint schema name as qualifier we can avoid duplicate. tables. I've been developing a wizard to create complex database Postgres queries for users without any programming/SQL background. The Schema. Otherwise it is created in the current schema. constraint_schema = kcu. Results in constraint_catalog, constraint_schema, constraint_name, check_clause. Dec 23, 2018 · 4. column_name, pgc. For example, in our schema we need to add some logic to our reservations times. COPY TO copies the contents of a table to a file, while COPY FROM copies data from a file to a table (appending the data to whatever is in the table already). Jiří Baum. consrc as definition from pg_constraint pgc join pg_namespace nsp on nsp. pg_attribute a. The table will be owned by the user issuing the command. The information schema consists of a set of views that contain information about the objects defined in the current database. size) as absolute_size, schemas. 13. Basically a list of tables by name ascending. Only those constraints are shown for which the current user has write access to the referencing table (by way of being the owner or having some privilege other than SELECT ). constraint_name and kcu. oid = connamespace WHERE nsp. Create a new database and project directory. Each constraint name can be schema-qualified. May 19, 2012 · Referential integrity is the feature of a database ensuring implied relationships in the database are enforced. The view originally only shows routines owned by the current role but you can find the original query by typing \d+ information_schema. table_constraints Feb 17, 2011 · This lists all tables of public schema of the current database: \dt This lists all tables of public schema of the current database in detail: \dt+ These list all tables of my_schema schema of the current database: \dtS my_schema. answered Aug 16, 2022 at 10:34. attnum = c. select distinct db. COPY moves data between PostgreSQL tables and standard file-system files. If foreign key consists of multiple columns (composite key) it is still represented as one row. create table test ( n integer primary key ); -- There might be more than one schema. Table 37. *. datname, t. Summary. schemata; Feb 20, 2017 · There can be more than one unique or foreign key, and a constraint is not necessarily defined with a single column. May 2, 2020 · PostgreSQL exposes the constraints as well as other schema details through information_schema, so to find all the constraints for the table, query table_constraints, for example: SELECT constraint_name FROM information_schema. attnum > 0. constraint_name, string_agg(kcu. You have to use pg_class to get the table names. May 14, 2010 · For removing the data and preserving the table-structures in pgAdmin you can do: Right-click database -> backup, select "Schema only". tables t WHERE t. check_constraints. 37. Else you can check the syntax by the below steps easily: After connecting the the DB, type. -- Set the search path to the target schema SET search_path = newSchema; -- Loop over the table names and recreate the tables DO $$ DECLARE table_name text; BEGIN FOR table_name IN SELECT t. This is a simple way to list all the enum defined types in the current database. JOIN information_schema. SELECT. field_2). Apr 27, 2020 · There are two ways in which you can use the SQL Synthax to list all schemas from PostgreSQL. constraint_name: JOIN information_schema. table_schema) 7. You'll get most of this information from the information_schema views, particularly tables , table_constraints and constraint_column_usage . Now it's up to you to make sure your changes leave the DB in a consistent state! Then when you are done, reenable triggers & constraints for your session with: set session_replication_role to default; answered Jan 15, 2018 at 15:43. In that case we are getting some incorrect records. \dt schema_2. table_catalog order by db. constraint_name = tco. schemata; This query queries the information_schema. Schemas are in pg_namespace. confkey[1] WHERE c. – Daniel Waltrip. Dec 11, 2010 · pg_size_pretty(schemas. \d. object_name Code language: CSS (css) A database may contain one or more schemas. 1. qn dy iv uo tb nz qc sq jy ue