![]() ![]() This library make it very easy to perform any kind of bulk operations: BulkInsert. Disclaimer: I'm the owner of the project Bulk-Operations.NET. COPY TableName (Column1, Column2, Column3) FROM STDIN BINARY. By example, in my library, I'm using the SQL Copy. Unfortunately, PostgreSQL doesn't provide a native way to create a new table from a CSV file. There is some option to bulk insert into PostgreSQL. Creating a Postgres Table from a CSV file The null_value_not_allowed error indicates that the CSV file contains null values and the import is trying to insert that into the table which has a not null constraint. null_value_not_allowed: Not null violation The invalid_parameter_value error could indicate that the CSV file is not encoded in UTF-8, which may result in the import failing or the data being corrupted. invalid_parameter_value: Incorrect encoding The datatype_mismatch error indicates that the data types of the columns in the CSV file do not match the data types of the columns in the target table. The syntax_error indicates that the format of the CSV file or the delimiter used in the file does not match the specifications provided in the import command, which may result in the import failing or the data being corrupted. syntax_error: Incorrect format or delimiter Otherwise, a more flexible approach is to replace the SQL's COPY command with the psql 's 'meta-command' called \copy which which takes all the same options as the 'real' COPY, but is run inside the client (with no need for at the end): psql -c '\copy tbname FROM '/tmp/thefile.csv' delimiter '' csv'. Make sure that the file actually exists, and that the provided file path is valid. The undefined_file error indicates that the file you are trying to import doesn’t exist. ![]() Here is a list of the most common errors you might encounter, and that you will need to resolve before the file can successfully be imported. Importing a CSV file might fail for various reasons. NET CSV parser and construct UPDATE statements which you can execute manually. It allows you to import data into a table by going to the "Import/Export" option, selecting the file to import, specifying the format, delimiter, encoding, and the column names. If you're looking to insert new rows, you may want to look at the PostgreSQL COPY feature this is exposed by Npgsql via this API. ![]() It is also possible to import a CSV file in PostgreSQL using GUI tools such as pgAdmin, a popular open-source management tool for PostgreSQL. Note that the WITH clause is optional, but it allows you to specify the format of the file (CSV), whether the first row contains header information (HEADER true), and the delimiter used in the file (DELIMITER ','). ![]()
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