dumpling: check table-list types before dumping (#53683)

[ti-chi-bot]

This is an automated cherry-pick of #53683

What problem does this PR solve?

Issue Number: close #53682

Problem Summary:

When users specify table-list explicitly, Dumpling will not query the table types.

tidb/dumpling/export/dump.go

Lines 1147 to 1150 in 5e5326b

	func prepareTableListToDump(tctx *tcontext.Context, conf *Config, db *sql.Conn) error {
	if conf.SpecifiedTables || conf.SQL != "" {
	return nil
	}

As a result, all tables are considered as TableTypeBase and query the meta with SHOW CREATE TABLE later.

If there is a view in table-list, SHOW CREATE TABLE will return the unexpected result:

expected 4 destination arguments in Scan, not 2

What changed and how does it work?

Query table types even if table-list is specified.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov]

Codecov Report

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Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #54577   +/-   ##
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  Coverage               ?   72.6206%           
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  Files                  ?       1412           
  Lines                  ?     416745           
  Branches               ?          0           
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  Hits                   ?     302643           
  Misses                 ?      94143           
  Partials               ?      19959           

Flag	Coverage Δ
unit	72.6206% <0.0000%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.9400% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.9518% <0.0000%> (?)

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-22 03:15:20.049950772 +0000 UTC m=+842142.040892238: ☑️ agreed by tangenta.
• 2024-07-22 03:15:57.448599067 +0000 UTC m=+842179.439540538: ☑️ agreed by lance6716.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lance6716, okJiang, tangenta

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