如何将txt文件中的每一行插入到SQL Server数据库的单独行中？

Question

I have a text file which has words from dictionary like..

ABACA
ABACHI
ABACHISTA
ABACO
ABADESSA
ABADIA
ABALIETA
ABARICA

Now what I want to do is insert this list from a text file into a SQL Server table. I can not possibly add quotes manually. I think one way of doing this could be copy pasting this into Excel sheet and then importing it or adding quotes but Excel sheet has like 65k rows in a sheet and this text file has much greater number of words in it. So how can this be done easily? I am using SQL Server 2008.

Answer 1

You can easily bulk import a huge file with a lot of words using T-SQL - just create a table with a single column of type varchar , long enough to hold your longest string, and then bulk insert your data.

Try to use T-SQL statements something like this:

CREATE TABLE ImportedWordList(Word VARCHAR(200) )

BULK INSERT ImportedWordList
FROM 'c:\temp\listofwords.txt'
WITH
(ROWTERMINATOR = '\n')
GO

SELECT * FROM dbo.ImportedWordList

Works like a charm in my limited testing (and takes about 20 seconds to load a list of over a million words into that table).

Answer 2

As you've tagged your question with C#, Just use:

var allLines = File.ReadAllLines(filepath);

to get all of the lines, run on all of them with a foreach and use whatever way you want to insert it to your database, You can use:

using (var con = new SqlConnection(connectionString))
{
    foreach (var line in allLines)
    {
        using (var cmd = con.CreateCommand())
        {
            cmd.CommandText = "INSERT INTO [YourTable] ([YourColumn]) VALUES (:val)";

            var param = cmd.CreateParameter();
            param.ParameterName = ":val";
            param.Value = line;

            cmd.ExecuteNonQuery();
        }
    }
}

I haven't tested that but it's simple enough to succeed with not much trouble.

I geuss it'll be better to send all the inserts in a single command, but that's just a poc

Answer 3

Do you only have to do this once?

Open up management studio and use Import Data

choose Flat File Source as the data source

Answer 4

This could be an example.

string str = null;
StreamReader sr = new StreamReader(YourTextFilePath);
using (var con = new SqlConnection(YourConnectionString))
{
    while ( (str = sr.ReadLine()) != null)
    {
        cmd = new SqlCommand("Insert into table_name values ('" + str + "')", con);
        cmd.ExecuteNonQuery();
        cmd.Dispose();
    }
}

My code might be wrong/inefficient. So, feel free to correct me. ;)

Answer 5

BULK INSERT TABLE_NAME FROM 'file path' WITH (ROWTERMINATOR = '\\n')

* When you giving the path You should give server path.otherwise query will get error *