postgres data type numeric

Recently, I have been working on a project related to PostgreSQL database, documenting the knowledge that I have learned in this process. About PostgreSQL database online already have too many relevant introduction, in order to blog the system or

Data conversion in the S database and postgres Data Conversion After s8.3, the default conversion between field data is canceled. If you need to perform data transformation, you can use ":" in the S database to convert the field data type. Actually,

After postgres8.3, the default transitions between field data are canceled. If a data transformation is required, in the Postgres database, we can use "::" To convert the field data into a type. The actual "::" is called by the cast function.

Original linkDeepgreen DB full name Vitesse Deepgreen DB, a scalable, massively parallel (often called MPP) data warehousing solution that originates from an open source Data Warehouse Project Greenplum DB (often referred to as GP or gpdb). So

Create a databaseCREATEDATABASE name WITH ] [ OWNER [=] user_name ] [ TEMPLATE [=] template ] [ ENCODING [=] encoding ] [ LC_COLLATE [=] lc_collate ] [ LC_CTYPE [=] lc_ctype ]

How to debug Plpgsql with PGADMINIII[[email protected] soft_bak]# git clone git://git.postgresql.org/git/pldebugger.gitInitialized Empty Git repository in/opt/soft_bak/pldebugger/.git/Remote:counting objects:445, done.Remote:compressing objects:100%

Tag: Service www-based Cal HTTPS following continue step configuration fileI. ReferencesPostgresql-10-us.pdfPostgres_plus_migration_guide.pdfwww.postgresql.orgWww.enterprisedb.com* Due to technical updates quickly, please note the timeliness of this

warehouse_db=# CREATE TABLE item (item_id Integer not null,item_name text,item_price numeric,item_data text);CREATE TABLEwarehouse_db=# CREATE INDEX Item_idx on item (ITEM_ID);CREATE INDEXwarehouse_db=# \di Item_idxList of relationsSchema | Name |

Actually "::" is called the cast function. What exactly are the data conversions between the fields? This problem can be answered only by studying the cast function. The information of the cast function is managed in the System Pg_cast

I. Overview of DB-API Python supports a number of different databases. Because different seller servers result in different network protocols for database communication. In earlier versions of Python, each database had its own Python module, all of