如何使用PowerShell导入CSV文件？

Question

I want to import a CSV File (comma delimited with double quote) into SQLite using PowerShell script. I tried:

echo ".import export.csv mytable" | sqlite3.exe

I get this error:

export.csv:327: unescaped " character

I get this error for all lines. On SQLite's command line shell same command works:

sqlite > .import export.csv mytable

How can I make this command work using a PowerShell script?

Answer 1

what about sqlite3.exe ".import export.csv mytable".

You can check the documentation of sqlite3.exe to use it not being in its shell, how to pass parameter to sqlite3.exe.

You can try below line

Invoke-Expression 'sqlite3 yourdatabase.db < ".import export.csv mytable"'

Answer 2

None of the solutions listed on this page work. However, I managed to figure it out after a bit of trial-and-error. I haven't seen this solution posted anywhere, so posting it here so that it hopefully helps someone else who stumbled upon this page via Google like I did.

$params = @"
.mode csv
.separator ,
.import export.csv mytable
"@

$params | .\sqlite3.exe mydatabase.db

This works for me in both PowerShell 5.1 and v7.0.

Answer 3

The following single command line works in both

• cmd.exe (version 10.0.xx via ver ) and
• powershell.exe (version 5.1.xx via $PSVersionTable )

.\sqlite3.exe my.db ".import file1.csv table1 --csv"

This loads the contents of csv file file1.csv into table table1 within the sqlite database file my.db . The --csv flag will import the file and create the table structure based on the header column names in that file, and will approximately infer the data types.

You can import multiple files this way. ie

.\sqlite3.exe my.db ".import file1.csv table1 --csv" ".import file2.csv table2 --csv"

You can chain commands together to immediately open the database for querying by appending ; .\sqlite3.exe my.db ; .\sqlite3.exe my.db .

ie

.\sqlite3.exe my.db ".import file1.csv table1 --csv" ".import file2.csv table2 --csv; .\sqlite3.exe my.db"