execute()
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The parent of this page is: Connector/Python API
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DETAILS
Specify a SQL statement to execute. The optional parameters provide a sequence or mapping that are bound to "variable" markers in the SQL statement. These variables are usually specified as question marks (paramstyle="qmark"), however a paramstyle of "format" or "pyformat" are also supported (as long as one style is used per call).
EXAMPLES
Given the following "sample" table in database "test":
CREATE TABLE sample (
num INTEGER,
str VARCHAR(64),
ts DATE
);
The following will INSERT 3 rows and then SELECT all the rows in the table:
import mariadb
conn = mariadb.connect(
host = 'localhost',
user = 'root',
password = 'secret',
database = 'test',
)
cursor = conn.cursor()
# The values for "qmark" style are always specified as a tuple:
cursor.execute("INSERT INTO sample VALUES (?, ?, ?)",
(1, "A 'string' with single quotes.", '2020-01-01'))
# The values for "format" style are also specified as a tuple:
cursor.execute("INSERT INTO sample VALUES (%d, %s, %s)",
(2, 'A "string" with double quotes.', '2020-01-02'))
# The values for "pyformat" style are specified as a dict:
cursor.execute("INSERT INTO sample VALUES (%(num)s, %(str)s, %(ts)s)",
{
'num': 3,
'str': "Another simple string value...",
'ts': '2020-01-03',
})
cursor.execute("SELECT * FROM sample")
# This will output all the column names for the above SELECT:
print([x[0] for x in cursor.description])
# ... and then output all the rows (as tuples):
for row in cursor:
print(row)
conn.close()
The output when starting with an empty table would look like this:
['num', 'str', 'ts']
(1, "A 'string' with single quotes.", datetime.date(2020, 1, 1))
(2, 'A "string" with double quotes.', datetime.date(2020, 1, 2))
(3, 'Another simple string value...', datetime.date(2020, 1, 3))
CHANGE HISTORY
Release Series | History |
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1.1 |
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1.0 |
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