postgresql bytea insert

If you want to store binary data in PostgreSQL, such as Word, Excel files, and image files, you can use bytea columns. Bytea is a field type unique to PostgreSQL for storing binary data. It is similar to blob and Binary Large Object Types in SQL

It took nearly two days to upload the space-based documents in batches. The original document was originally stored in the folder under the website directory as a file, and then stored in the bytea field of PostgreSQL. This field is equivalent to

Originally wanted to find the PostgreSQL database occupy Space Command found this blog, found that the provision of severalcommand is useful (but there are several senses that are sucks.) =), so he translated it over. In addition this article is 09,

First, the geometry type in the PostGISPostGIS supports the "simple Features" type of all OGC specifications, and on this basis expands support for 3DZ, 3DM, and 4D coordinates.1. OGC WKB and WKT formatsThe OGC defines two formats for describing

1. First knowledge of PostgreSQL large objectA colleague feels very slow when recovering from a file backed up using Pg_dump (using the plain format), so let me analyze what the reason is.I got his. bak file, and the file has 1 more than one G. To

Data type of PostgreSQL databasePostgreSQL supports a variety of data types, including integer types, floating-point types, Arbitrary precision values, datetime types, string types, binary types, Boolean types, and array types.1, Integer

SQL Server data migration to PostgreSQL error explanation and solution, serverpostgresql Problem reproduction: 1. PG client: postgres=# create table text_test (id int,info text);CREATE TABLEpostgres=# insert into text_test values (1,E'\0x00');ERROR:

PostgreSQL has a wide range of data types available. Users can use the CREATE type command to Add new data types to PostgreSQL. Table 8-1 shows all the built-in common data types. Most of the optional names listed in the aliases column are names

PostgreSQL usage notes (my company uses arterydb, sub-installed postgreSQL), postgresqlarterydb-- Start the database./Bin/aty_ctl-D data-l arterydb. log start-- Connect to the database./Bin/atysql-d artery-- Set Environment VariablesExport

4.2. Value expressionsValue expressions are used in a variety of syntax environments, such as in the target list of the SELECT command, as new column values in INSERT or UPDATE , or in search conditions for many commands. We sometimes call the