Question

the table named: products. it have five hundred rows record. the table have field :products_model products_price. the products_model is unique。

the original value that stored in products table are all 0.0000. now i want to update it with batch in phpmyadmin according to the ‘products_model`.

i prepared the data in excel with two columns, ‘products_modelthe new valueproducts_price`(according to some reason, some may be empty). how do i do? thank you.

the data form a csv file :

products_model  products_price
LB2100  
LB2117  12.49
LB2381  35.99
LB2307  12.99
LB2380  35.99
LB2468  10.99
LB2139  
LB2223  
LB2027  15.99
LB2126  12.99
LB2308  9.99
LB2124  13.99
LB2077  
LB2361  
LB2021  14.99
LB2129  
LB2010  11.21
LB2186  
LB2039  15.66
LB2153  
LB2564  30.99
LB2104  
LB1182  15.99
LB2034  15.9
LB2455  15.55
LB2189  
LB2559  22.9
LB2382  35.99
LB2168  10.99

Answer 1

Two steps:

1. Store excel file as CSV (Excel allows it).
2. Use LOAD DATA INFILE statement with REPLACE keyword to update your table.

Edit:

About the REPLACE keyword –
From the reference – If you specify REPLACE, input rows replace existing rows. In other words, rows that have the same value for a primary key or unique index as an existing row.

The usage is the same –

LOAD DATA INFILE 'file_name' REPLACE INTO TABLE tbl_name FIELDS TERMINATED BY...

---

Code

Create and populate the table:

CREATE TABLE products(
  products_model VARCHAR(6) NOT NULL,
  products_price DECIMAL(5, 2) DEFAULT NULL,
  PRIMARY KEY (products_model)
);

INSERT INTO products VALUES 
  ('LB2307', 100.00),
  ('LB2380', 200.00),
  ('LB2468', 300.00);

Let’s import data from CSV:
Specify FIELDS TERMINATED, LINES TERMINATED and other paramaters for your task

LOAD DATA INFILE 'file_name.csv' REPLACE INTO TABLE products
FIELDS TERMINATED BY '  '
LINES TERMINATED BY '\r\n'
IGNORE 1 LINES
(products_model, @var1)
SET products_price = IF(@var1 = '', 0, @var1); -- Replace empty string with 0

Check results:

SELECT * FROM products;
+----------------+----------------+
| products_model | products_price |
+----------------+----------------+
| LB1182         |          15.99 |
| LB2010         |          11.21 |
| LB2021         |          14.99 |
| LB2027         |          15.99 |
| LB2034         |          15.90 |
| LB2039         |          15.66 |
| LB2077         |           0.00 |
| LB2100         |           0.00 |
| LB2104         |           0.00 |
| LB2117         |          12.49 |
| LB2124         |          13.99 |
| LB2126         |          12.99 |
| LB2129         |           0.00 |
| LB2139         |           0.00 |
| LB2153         |           0.00 |
| LB2168         |          10.99 |
| LB2186         |           0.00 |
| LB2189         |           0.00 |
| LB2223         |           0.00 |
| LB2307         |          12.99 |
| LB2308         |           9.99 |
| LB2361         |           0.00 |
| LB2380         |          35.99 |
| LB2381         |          35.99 |
| LB2382         |          35.99 |
| LB2455         |          15.55 |
| LB2468         |          10.99 |
| LB2559         |          22.90 |
| LB2564         |          30.99 |
+----------------+----------------+

Good luck!