Postgresql create if not exist

    • [PDF File] Implementing failover of logical replication slots in Patroni

      http://5y1.org/file/20871/implementing-failover-of-logical-replication-slots-in-patroni.pdf

      Example: peek changes without consuming localhost/testdb=# CREATE TABLE replicate_me ( id BIGINT NOT NULL GENERATED ALWAYS AS IDENTITY PRIMARY KEY, name TEXT); CREATE TABLE localhost/testdb=# INSERT INTO replicate_me (name) VALUES ('PGConf.EU'); INSERT 0 1 localhost/testdb=# SELECT * FROM …

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    • [PDF File] Postgresql Schemas Path

      http://5y1.org/file/20871/postgresql-schemas-path.pdf

      c:/path/to/psql.exe -U postgres psql (9.2.4) Type Create a schema called test in the default database called postgres For PostgreSQL it is common to run two commands in a single transaction in order to set the schema search path: set search_path to foo, public, select 5. The schema does not exist in the database. 3 schemas exist in this database.

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    • [PDF File] Writing a user-defined datatype - PostgreSQL

      http://5y1.org/file/20871/writing-a-user-defined-datatype-postgresql.pdf

      Register type with PostgreSQL CREATE OR REPLACE FUNCTION colour_in(cstring) RETURNS colour AS 'MODULE_PATHNAME' LANGUAGE 'C' IMMUTABLE STRICT; CREATE OR REPLACE FUNCTION colour_out(colour) ... operator does not exist: colour = unknown. Equality operator We can borrow the implementation from built-in integer …

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    • [PDF File] 24.5. Hot Standby - PostgreSQL

      http://5y1.org/file/20871/24-5-hot-standby-postgresql.pdf

      Hot Standby is the term used to describe the ability to connect to the server and run queries while the server is in archive recovery. This is useful for both log shipping replication and for restoring a backup to an exact state with great precision. The term Hot Standby also refers to the ability of the server to move from recovery through to ...

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    • [PDF File] Data Masking with PostgreSQL Anonymizer - GitLab

      http://5y1.org/file/20871/data-masking-with-postgresql-anonymizer-gitlab.pdf

      CREATE EXTENSION IF NOT EXISTS anon CASCADE; SELECT anon.init(); SELECT setseed(0); Declarethemaskingrules Paul wants to hide the last name and the phone numbers of his clients. He will use the fake_last_name()andpartial()functionsforthat: SECURITY LABEL FOR anon ON COLUMN customer.lastname IS 'MASKED WITH …

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    • [PDF File] Implementing Your First PostgreSQL Extension

      http://5y1.org/file/20871/implementing-your-first-postgresql-extension.pdf

      •PostgreSQL already has lots of different data types; bigint, text, timestampz, jsonb, … •If you need a data type which doesn’t exist in PostgreSQL; You can define new type with CREATE TYPE command. You can add the types created by other people using extensions •Some additional data types; ip-address, e-mail

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    • [PDF File] The PostgreSQL Global Development Group

      http://5y1.org/file/20871/the-postgresql-global-development-group.pdf

      Users which are to be added or removed from the group. The user names must exist. Outputs ALTER GROUP Message returned if the alteration was successful. Description ALTER GROUPis used to add or remove users from a group. Only database superusers can use this command. Adding a user to a group does not create the user. Similarly, …

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    • [PDF File] Visiting The Catalog - PostgreSQL

      http://5y1.org/file/20871/visiting-the-catalog-postgresql.pdf

      The Catalog. Is a set of tables in the schema pg_catalog. As such the table definitions are registered in the catalog itself. Contains all required information about all objects existing in the database. Is a central feature of all relational databases. Is used by the DB management system for operations.

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    • [PDF File] Chapter 33. Triggers - UC Davis

      http://5y1.org/file/20871/chapter-33-triggers-uc-davis.pdf

      input through a specially-passed TriggerData structure, not in the form of ordinary function arguments.) Once a suitable trigger function has been created, the trigger is established with CREATE TRIGGER. The same trigger function can be used for multiple triggers. PostgreSQL offers both per-row triggers and per-statement triggers. With a per ...

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    • [PDF File] ST Geometry SQL function reference - Esri

      http://5y1.org/file/20871/st-geometry-sql-function-reference-esri.pdf

      of the sde user. For PostgreSQL, the qualification is optional, but it is a good practice to include the qualifier. Do not include the qualification when using the functions with SQLite, as there is no sde schema in SQLite databases. When you provide well-known text strings as input with an ST_Geometry SQL function, you can use scientific

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    • [PDF File] ST Geometry SQL function reference - Esri

      http://5y1.org/file/20871/st-geometry-sql-function-reference-esri.pdf

      spatial data type in Oracle, PostgreSQL, and SQLite. Esri ST_Geometry SQL functions and types are created when you do any of the following: • Create a geodatabase in an Oracle database. • Use ST_Geometry when creating a geodatabase in a PostgreSQL database. • Install the ST_Geometry spatial data type in an Oracle or PostgreSQL database.

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    • [PDF File] Data warehousing with PostgreSQL

      http://5y1.org/file/20871/data-warehousing-with-postgresql.pdf

      flexible. intelligent. Allow to analyse, transform, model and deliver data within the database server. Tablespaces. Internal label for a physical directory in the file system. Can be created or removed at anytime. Allow to store objects such as tables and indexes on different locations. Good for scalability.

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    • [PDF File] PostgreSQL 13 新機能検証結果 (GA) - Hewlett Packard …

      http://5y1.org/file/20871/postgresql-13-新機能検証結果-ga-hewlett-packard.pdf

      本文書は、既にある程度PostgreSQL に関する知識を持っているエンジニア向けに記述 しています。インストール、基本的な管理等は実施できることを前提としています。 1.3 本文書の範囲 本文書はPostgreSQL 12 (12.4) とPostgreSQL 13 (13.0)の主な差分を記載して …

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    • [PDF File] PostgreSQL 7.1 Reference Manual

      http://5y1.org/file/20871/postgresql-7-1-reference-manual.pdf

      Users which are to be added or removed from the group. The user names must exist. Outputs ALTER GROUP Message returned if the alteration was successful. Description ALTER GROUP is used to add or remove users from a group. Only database superusers can use this command. Adding a user to a group does not create the user.

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    • [PDF File] Conversion of Microsoft SQL/ASP applications to PostgreSQL

      http://5y1.org/file/20871/conversion-of-microsoft-sql-asp-applications-to-postgresql.pdf

      Next you need to create a new database on the PostgreSQL server that is compatible with the old database on SQL server (that is, has the same tables, views, accepts the same information, has the same stored procedures and triggers, etc.). ... uniqueidentifier column types do not exist in PostgreSQL, bigint is usually

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    • [PDF File] C O L L AT IO N S IN PO S T G R E S Q L - Welcome

      http://5y1.org/file/20871/c-o-l-l-at-io-n-s-in-po-s-t-g-r-e-s-q-l-welcome.pdf

      rst, the locale need to be present in the OS during initdb all available collations are registered in template0 catalog pg_collation, can be re-run later per DB: pg_import_system_collations() libc locale -a, adds a less platform speci c alias ICU uloc_getAvailable() and uloc_getDisplayName, appends -x-icu name. to. CREATE …

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    • [PDF File] Hierarchical data models in Relational Databases - PostgreSQL

      http://5y1.org/file/20871/hierarchical-data-models-in-relational-databases-postgresql.pdf

      Physical Implementations There are 5 physical designs for implementing logical Generalization Hierarchies Each physical design varies in the G/H features that its able to implement Entity-Attribute-Value table (EAV) (Relational purists favorite) Null-able Attributes (NA) table (Happens overtime) Vertical Disjunctive Partitioning (VDP) table partitioning …

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    • [PDF File] Mysql Manual Add Column If Not Exists Sqlite Alter Table

      http://5y1.org/file/20871/mysql-manual-add-column-if-not-exists-sqlite-alter-table.pdf

      Mysql Manual Add Column If Not Exists Sqlite Alter Table ALTER TABLE my_table DROP col WHERE NOT EXISTS (SELECT * FROM my_table WHERE ways to do it for the various databases (SQL Server, MySQL, Oracle, PostgreSQL)? ALTER TABLE ADD COLUMN IF NOT EXISTS in SQLite. For example, if you create a table

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    • [PDF File] PostGRESQL - Department of Computer Science, University …

      http://5y1.org/file/20871/postgresql-department-of-computer-science-university.pdf

      Create Database objects. Steps involved. 1.Connect to sample database and then enter. postgres=# \c <sample_db_name>. 2.Run the SQL DB scripts or queries to create/update database objects. 3.List database objects: postgres=# \d+. Finally, enter: postgres:=# Analyze. to update the statistics used by the PostgreSQL query planner to generate …

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