Import EXCEL to the database:
navicat
Needless to say, the next step will do.
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Select all cells.
CRTL + A
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Display multiple lines of data as one line: remove line breaks and widen.
Check the Internet, it is ALT +1, ALT +0, there will be a flashing character, that is the newline character.
My XX person is stupid.
Then fill in the width to convert multiple lines to one line.
The first time I saw such a shortcut key, I have really little experience.
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Hide cells:
select all cell rows or columns
. Right-click to hide.
CRTL +9 can hide a row. CRTL +0 can hide a column.
Show and hide:
Shortcut keys are not recommended.
I thought about it, CRTL +A, right-click, and click Unhide.
tIP: What's the use of hiding? It is not displayed when printing.
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Modification time format:
If it is text, it should not be changed to the authentic time format.
For example, 1999-9-9 is converted to September 9, 1999. Then it can only be CRTL +F.
If it's time format, you can do 
it like this : that's it.
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Cross-line copy:
Select a row or column, select CRTL, and drag. You can select across rows.
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Select multiple lines:
shift+↑↓←→, more worry-free.
With CRTL +SHIFT +↑↓←→, the selection of a large number of areas can be handled relatively easily.
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Keep the first line visible:
Freeze the pane.
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Populate the pane:
Select the last row.
Then CRTL +shift + UP to the first line.
Then slide down one line.
Then enter the text
and then CRTL+ENTER.
I know this is very troublesome, but when processing thousands of rows of data, this execution is really faster than manual......
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Fill the same data
quickly. Supplement: Select the cell to be filled quickly.
Then CTRL + enter.
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After selecting screening, I don’t know what items have been screened and I want to return to normal.
