How to modify a column present in a mysql database through python? -


i'm able connect database. want change values present in particular column.

cursor.execute("select * foo;") rows = cursor.fetchall() row in rows:     print(row)

output of above code is,

('foo,bar,foo,bar',) ('foobar,bar',) ('foo,bar,buz,buz',)

i'm able replace value by,

rows = cursor.fetchall() row in rows:     print(re.sub(r'^[^,]*,', '', row[0])) cursor.close()

returns,

bar,foo,bar bar bar,buz,buz

but don't know how setback altered string particular column.

i think need use update query, tried

for row in rows:     cursor.execute("update foo set  categories=%s;", re.sub(r'^[^,]*,', '', row[0]))

but returns error message of,

you have error in sql syntax; check manual corresponds mysql server version right syntax use near '%s' @ line 1

as said in comment need specify column id query :

for row in rows:         sub=re.sub(r'^[^,]*,', '', row[0])         cursor.execute("update drug_specifications set  categories=%s id=%s;",(sub, str(row[0])))

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