当前位置：网站首页>MySQL is shown in the figure. The existing tables a and B need to be associated with a and B tables through projectcode to find idcardnum with different addresses.

MySQL is shown in the figure. The existing tables a and B need to be associated with a and B tables through projectcode to find idcardnum with different addresses.

2022-07-28 02:38:00 【CSDN Q & A】

mysql As shown in the figure , Existing table a, surface b, The requirements are adopt projectcode relation a、b surface , Find out address Different idcardnum.

Under the supplement Is to find out different Not weight removal I think there is a De duplication of writing

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当前位置：网站首页>MySQL is shown in the figure. The existing tables a and B need to be associated with a and B tables through projectcode to find idcardnum with different addresses.

MySQL is shown in the figure. The existing tables a and B need to be associated with a and B tables through projectcode to find idcardnum with different addresses.

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