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Aqua Data Studio provides six compare tools to easily compare database schemas, schema objects, queries, query results, files, directories, clipboard contents, and version control history.
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Compare Tools

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From the Aqua Data Studio menu bar > Tools > Compare Tools. 
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From the Schema Browser, you can perform File Compare and Schema Compare. 
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From the Files Browser or Projects Browser, you can perform File Compare andDirectory Compare.
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With the right-click action on an open tab, you can perform Tab Compare.

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Copy queries and then launch Copy Compare from the Aqua Data Studio menu bar Tools > Copy Compare.
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Comparison Result

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Compare tools are also thoroughly integrated within Aqua Data Studio. When a version-controlled file is modified, Aqua Data Studio displays inline diff indicators on the Annotation bar. The inline diff indicator allows live comparisons with the local source control repository to be run as editing continues. A green diff indicator () signifies addition and a blue diff bar indicator () signifies replacement. An arrow  signifies the deletion of lines.  
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Files viewed within the Repository Browser can also be compared with their previous versions.
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Comparison Filters

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