fix: escaped sql scripts make database deadlock

[andrewshan]

Please provide issue(s) of this PR:
Fixes #953

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[polaris-test-bot]

2023-02-25 18:10:58: =========TEST START==========
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2023-02-27 10:27:17: =========TEST START==========
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2023-02-27 13:26:47: =========TEST START==========
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2023-02-27 13:39:48: [STANDALONE VERSION]PR autotest FAILED! We executed 0 test cases and 0 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/pr1254158930/sta/qta-report.html
2023-02-27 13:39:52: [CLUSTER VERSION] PR autotest FAILED! We executed 0 test cases and 0 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/pr1254158930/clu/qta-report.html
2023-02-27 13:39:55: [KUBENETES VERSION]PR autotest FAILED! We executed 0 test cases and 0 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/pr1254158930/k8s/qta-report.html

[codecov]

Codecov Report

Merging #954 (5134952) into main (dbfbea8) will decrease coverage by 0.13%.
The diff coverage is 26.26%.

❗ Current head 5134952 differs from pull request most recent head f4b6e8a. Consider uploading reports for the commit f4b6e8a to get more accurate results

@@            Coverage Diff             @@
##             main     #954      +/-   ##
==========================================
- Coverage   57.41%   57.28%   -0.13%     
==========================================
  Files         185      185              
  Lines       33638    33778     +140     
==========================================
+ Hits        19312    19351      +39     
- Misses      11810    11886      +76     
- Partials     2516     2541      +25     

Impacted Files	Coverage Δ
store/mysql/client.go	35.67% <0.00%> (ø)
store/mysql/maintain.go	51.09% <6.15%> (-4.25%)	⬇️
store/mysql/routing_config.go	41.37% <13.33%> (-2.91%)	⬇️
store/mysql/group.go	53.73% <20.00%> (ø)
store/mysql/l5.go	8.48% <20.00%> (ø)
store/mysql/circuitbreaker_config.go	47.27% <27.52%> (-2.73%)	⬇️
store/mysql/instance.go	52.73% <29.47%> (-1.18%)	⬇️
store/mysql/service.go	49.73% <32.14%> (-0.32%)	⬇️
store/mysql/namespace.go	50.76% <39.53%> (-5.12%)	⬇️
store/mysql/ratelimit_config.go	59.35% <75.00%> (+1.00%)	⬆️
... and 13 more

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