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GeezerVison is showing github.com — Add support for MySQL ALTER TABLE ... [DEFAULT] COLLATE [=] collation_name syntax by minleejae · Pull Request #2204 · JSQLParser/JSqlParser

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@minleejae

@minleejae minleejae commented Mar 25, 2025

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Description

This PR adds support for the following MySQL-compatible ALTER TABLE syntax:

ALTER TABLE tbl_name [DEFAULT] COLLATE [=] collation_name

Changes

  • Updated JavaCC grammar to recognize [DEFAULT] COLLATE [=] collation_name as a valid ALTER TABLE clause

  • Introduced a new AlterOperation.COLLATE operation to distinguish this clause from CONVERT TO CHARACTER SET ...

  • Added defaultCollateSpecified and hasEqualForCollate flags to AlterExpression to track optional parts of the syntax

  • Modified toString() in AlterExpression to deparse the new syntax correctly

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@minleejae
Add support for ALTER TABLE ... [DEFAULT] COLLATE [=] collation_name …
90e9b5f 
…syntax
@manticore-projects

manticore-projects commented Mar 25, 2025

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Well done and thank you!
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@manticore-projects
manticore-projects merged commit 48d195b into JSQLParser:master Mar 25, 2025
@minleejae
minleejae deleted the fix/collate branch April 2, 2025 09:16
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2 participants

@minleejae @manticore-projects
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