我有一个中间有空格的字符串,我需要在空格之前得到第一个字符串(可以是数字).
WITH test_data AS (
SELECT '123642134 10' AS quarter_cd FROM dual UNION ALL --VALID
)
select *
from test_data
where regexp_like(quarter_cd, '', 'c')
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输出应该是:
123642134
Run Code Online (Sandbox Code Playgroud) 我在excel文件中有一些数据.我将文件更改为.csv文件并尝试编写一些python代码来读取文件.
但我得到一些不可预测的输出.我的代码是这样的:
INPUT_DIR = os.path.join(os.getcwd(),"Input")
OUTPUT_DIR = os.path.join(os.getcwd(),"Output")
print INPUT_DIR, OUTPUT_DIR
def read_csv():
files = os.listdir(INPUT_DIR)
for file in files:
file_full_name = os.path.join(INPUT_DIR,file)
print file_full_name
f = open(file_full_name,'r')
for line in f.readlines():
print "Line: ", line
def create_sql_file():
print "Hi"
if __name__ == '__main__':
read_csv()
create_sql_file()
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这给出了非常奇特的输出:
C:\calcWorkspace\13.1.1.0\PythonTest\src\Input C:\calcWorkspace\13.1.1.0\PythonTest\src\Output
C:\calcWorkspace\13.1.1.0\PythonTest\src\Input\Country Risk System Priority Data_01232013 - Copy.csv
Line: PK**
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有人知道这个问题吗?