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there is 2 df. :

DF1
Date QW ER TY UI
2021.06.07 RTG 23 45 56
2021.06.07 RTY 23 45 56
2021.06.07 REQ 87 89 09
2021.06.07 REW 98 09 98
2021.06.05 REW 98 45 67
2021.06.05 REQ 98 13 34
DF2.
Date QW ER TY UI
2021.06.07 RTY 23 45 130
2021.06.07 REQ 87 89 50
2021.06.07 TRE 98 09 98

Please tell how to compare both df. and make a sample of lines from 2go df. , the result of the sample should look the following way

Date QW Er Ty UI
2021.06.07 TRE 98 09 98

If according to the basic conditions, compare the tech. date, correspondingly where values QW ER TY. In two DF, the same does not fall into the sample, only new, Attempts to squock and execute Query. Request, unfortunately, were not crowned with success

Thank you in advance