python - 获取pymysql中执行的sql语句

Question

我正在执行无效的查询，但我希望能够准确查看 pymysql 正在执行的查询内容来调试它。有没有办法做这样的事情:

try:
    self.cursor.execute(SQL, tuple(PARAMS))
except:
    print (self.cursor.last_executed_statement) # ??

Answer 1

根据the documentation ，你应该能够做到:

print (self.cursor.statement)

This read-only property returns the last executed statement as a string. The statement property can be useful for debugging and displaying what was sent to the MySQL server.

The string can contain multiple statements if a multiple-statement string was executed. This occurs for execute() with multi=True. In this case, the statement property contains the entire statement string and the execute() call returns an iterator that can be used to process results from the individual statements. The statement property for this iterator shows statement strings for the individual statements.