python2中在sqlite3中插入中文

# -*- coding: utf-8 -*-
import sqlite3

conn = sqlite3.connect('SWC_Perf_Info.db')
cur = conn.cursor()

test_sql1 = "INSERT INTO test (name) VALUES ('我愛中國')"    #gbk編碼，存入數據庫的時候顯示的是亂碼
cur.execute(test_sql1)
conn.commit()

cursor = cur.execute("SELECT name from test")
for row in cursor:
    print(row[0])    #因為讀取的是GBK編碼內容，所以可以直接顯示

test_sql2 = "INSERT INTO test (name) VALUES ('我愛中國')".decode('GBK')    #unicode編碼
cur.execute(test_sql2)
conn.commit()

cursor = cur.execute("SELECT name from test")
for row in cursor:
    print(row[0].decode('utf-8'))    #即使用的是Unicode寫入的數據庫，內部還是使用的UTF-8編碼存入，所以需要使用UTF-8解碼
    print(row[0].decode('utf-8').encode('GBK'))    #輸出的時候可以使用Unicode輸出也可以使用本地的GBK輸出

test_sql3 = test_sql2.encode('utf-8')    #utf-8編碼
cur.execute(test_sql3)
conn.commit()

cursor = cur.execute("SELECT name from test")
for row in cursor:
    print(row[0].decode('utf-8'))
    print(row[0].decode('utf-8').encode('GBK'))

 

select_sql1 = "SELECT name from test where name = '我愛中國'"    #以GBK格式查詢
cursor = cur.execute(select_sql1)
for row in cursor:
    print(row[0].decode('utf-8'))
    print(row[0].decode('utf-8').encode('GBK'))

 #查詢不到結果
 6 
select_sql2 = "SELECT name from test where name = '我愛中國'".decode('GBK')    #以Unicode格式查詢
cursor = cur.execute(select_sql2)
for row in cursor:
    print(row[0].decode('utf-8'))
    print(row[0].decode('utf-8').encode('GBK'))

    
select_sql3 = "SELECT name from test where name = '我愛中國'".decode('GBK').encode('utf-8')    #以utf-8格式查詢
cursor = cur.execute(select_sql3)
for row in cursor:
    print(row[0].decode('utf-8'))
    print(row[0].decode('utf-8').encode('GBK'))

 

總結下來寫入的時候可以使用Unicode或者UTF-8編碼的字符寫入數據庫

讀取輸出的時候使用UTF-8編碼或者GBK編碼的字符輸出

查詢的語句也必須是Unicode或者utf-8格式才能查詢到結果

 

UTF-8是可以支持直接的讀取或者輸出理想編碼格式