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fix typmod value in case of nvarchar(max), varchar(max), varbinary(max) #2194

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skumawat2025
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@skumawat2025 skumawat2025 commented Jan 2, 2024

Cherry-pick commit 2d52dc0 from BABEL_3_X_DEV to BABEL_2_X_DEV

This PR fixes a crash in TdsSendTypeNVarchar for nvarchar(max) by resolving a bug in handling varchar(max) , nvarchar(max) and varbinary(max) and limits a maximum scale value for (var)char, (var)binary, and (n)(var)char types. To do that, we set a limit of 8000 for (var)char and (var)binary, and a limit of 4000 for (n)(var)char.

Merge Conflicts -

function resolve_varbinary_typmod_from_exp() is not there in 2X branch as this commit ad95b43 is not there. So changes of this function is done inside the CASE stmt of TDS_SEND_VARBINARY.

Signed-off-by: Sandeep Kumawat [email protected]

Issues Resolved
BABEL-4547

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By submitting this pull request, I confirm that my contribution is under the terms of the Apache 2.0 and PostgreSQL licenses, and grant any person obtaining a copy of the contribution permission to relicense all or a portion of my contribution to the PostgreSQL License solely to contribute all or a portion of my contribution to the PostgreSQL open source project.

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This PR fixes a crash in TdsSendTypeNVarchar for nvarchar(max) by resolving a bug in handling varchar(max) , nvarchar(max) and varbinary(max) and limits a maximum scale value for (var)char, (var)binary, and (n)(var)char types. To do that, we set a limit of 8000 for (var)char and (var)binary, and a limit of 4000 for (n)(var)char.

Signed-off-by: Sandeep Kumawat [email protected]
Issues Resolved

BABEL-4547
@Deepesh125 Deepesh125 merged commit a680738 into babelfish-for-postgresql:BABEL_2_X_DEV Jan 2, 2024
23 checks passed
@Deepesh125 Deepesh125 deleted the babel-4547-2x branch January 2, 2024 13:27
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2 participants