load-data-infile

CSV file upload to handle status update & inserting new records

由 爷，独闯天下 提交于 2019-12-01 14:57:11
While working on a project, hosted locally, I'm stuck at managing CSV uploads. One of tasks require me to upload data on daily basis that has either new entries or updated status for existing entries. There is also an probability that some of the entries (that exists in database) has no updated status. Problem statement; I've created a CSV upload feature that uploads the CSV file to a particular location and imports the information in assigned TABLE. I want to know on what is the best way to verify the database records when I do the CSV upload. It should ideally work as following; if entry

CSV file upload to handle status update & inserting new records

由 混江龙づ霸主 提交于 2019-12-01 12:44:48
问题 While working on a project, hosted locally, I'm stuck at managing CSV uploads. One of tasks require me to upload data on daily basis that has either new entries or updated status for existing entries. There is also an probability that some of the entries (that exists in database) has no updated status. Problem statement; I've created a CSV upload feature that uploads the CSV file to a particular location and imports the information in assigned TABLE. I want to know on what is the best way to

Invalid field count in CSV input on line 1

由 时光怂恿深爱的人放手 提交于 2019-12-01 12:10:32
I am trying to export an ODS file to CSV, but when I import into phpmyadmin - I get "Invalid field count in CSV input on line 1." File (it has more than two lines but the scheme is the same): "Administração da Guarda Nacional Republicana" "Administração de Publicidade e Marketing" table: CREATE TABLE IF NOT EXISTS `profession` ( `id_profession` int(11) NOT NULL, `profession` varchar(45) DEFAULT NULL, `formation_area_id_formation_area` int(11) NOT NULL, PRIMARY KEY (`id_profession`), UNIQUE KEY `profession_UNIQUE` (`profession`), KEY `fk_profession_formation_area1` (`formation_area_id_formation

Invalid field count in CSV input on line 1

由 独自空忆成欢 提交于 2019-12-01 11:21:44
问题 I am trying to export an ODS file to CSV, but when I import into phpmyadmin - I get "Invalid field count in CSV input on line 1." File (it has more than two lines but the scheme is the same): "Administração da Guarda Nacional Republicana" "Administração de Publicidade e Marketing" table: CREATE TABLE IF NOT EXISTS `profession` ( `id_profession` int(11) NOT NULL, `profession` varchar(45) DEFAULT NULL, `formation_area_id_formation_area` int(11) NOT NULL, PRIMARY KEY (`id_profession`), UNIQUE

LOAD DATA INFILE with variables

由 こ雲淡風輕ζ 提交于 2019-12-01 03:48:46
问题 I was tring to use the LOAD DATA INFILE as a sotred procedure but it seems it cannot be done. Then i tried the usual way of embedding the code to the application itself like so, conn = new MySqlConnection(connStr); conn.Open(); MySqlCommand cmd = new MySqlCommand(); cmd = conn.CreateCommand(); string tableName = getTableName(serverName); string query = "LOAD DATA INFILE '" + fileName + "'INTO TABLE "+ tableName +" FIELDS TERMINATED BY '"+colSep+"' ENCLOSED BY '"+colEncap+"' ESCAPED BY '"

LOAD DATA from CSV file where doublequote was used as the escape character

由 和自甴很熟 提交于 2019-12-01 03:23:28
I have a bunch of CSV data that I need to load into a MySQL database. Well, CSV-ish, perhaps. ( edit : actually, it looks like the stuff described in RFC 4180 ) Each row is a list of comma-separated doublequoted strings. To escape any doublequotes that appear within a column value, double doublequotes are used. Backslashes are allowed to represent themselves. For example, the line: "", "\wave\", ""hello,"" said the vicar", "what are ""scare-quotes"" good for?", "I'm reading ""Bossypants""" if parsed into JSON should be: [ "", "\\wave\\", "\"hello,\" said the vicar", "what are \"scare-quotes\"

What is the best way to achieve speedy inserts of large amounts of data in MySQL?

由 僤鯓⒐⒋嵵緔 提交于 2019-11-30 19:52:20
I have written a program in C to parse large XML files and then create files with insert statements. Some other process would ingest the files into a MySQL database. This data will serve as a indexing service so that users can find documents easily. I have chosen InnoDB for the ability of row-level locking. The C program will be generating any where from 500 to 5 million insert statements on a given invocation. What is the best way to get all this data into the database as quickly as possible? The other thing to note is that the DB is on a separate server. Is it worth moving the files over to

Switching from MySQL to PostgreSQL - tips, tricks and gotchas?

由 ℡╲_俬逩灬. 提交于 2019-11-30 10:07:03
问题 I am contemplating a switch from MySQL to PostgreSQL. What are your tips, tricks and gotchas for working with PostgreSQL? What should a MySQLer look out for? See also: How different is PostgreSQL to MySQL? See also: Migrate from MySQL to PostgreSQL Note - I don't think this is a duplicate. In particular the type of answers are quite diffferent and the responses here have much more implementation detail, which is what I was looking for 回答1: Just went through this myself, well I still am...

What is the best way to achieve speedy inserts of large amounts of data in MySQL?

由 喜欢而已 提交于 2019-11-30 03:52:16
问题 I have written a program in C to parse large XML files and then create files with insert statements. Some other process would ingest the files into a MySQL database. This data will serve as a indexing service so that users can find documents easily. I have chosen InnoDB for the ability of row-level locking. The C program will be generating any where from 500 to 5 million insert statements on a given invocation. What is the best way to get all this data into the database as quickly as possible

mysqldump table without dumping the primary key

由 本小妞迷上赌 提交于 2019-11-29 22:53:34
I have one table spread across two servers running MySql 4. I need to merge these into one server for our test environment. These tables literally have millions of records each, and the reason they are on two servers is because of how huge they are. Any altering and paging of the tables will give us too huge of a performance hit. Because they are on a production environment, it is impossible for me to alter them in any way on their existing servers. The issue is the primary key is a unique auto incrementing field, so there are intersections. I've been trying to figure out how to use the
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