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feat: fetch only base column info for modifications, drop columnComment only if exists

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Pavel
2025-08-05 17:39:53 +02:00
parent 32b1a5b22d
commit de43880a1c
4 changed files with 33 additions and 8 deletions
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21
plugins/dbgate-plugin-mssql/src/frontend/MsSqlDumper.js
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@@ -168,21 +168,34 @@ class MsSqlDumper extends SqlDumper {
changeColumnComment(oldcol, newcol) {
if (oldcol.columnComment === newcol.columnComment) return;
if (oldcol.columnComment) this.dropColumnComment(newcol);
if (oldcol.columnComment) this.dropColumnCommentIfExists(newcol);
if (newcol.columnComment) this.createColumnComment(newcol);
}
/**
* @param {import('dbgate-types').ColumnInfo} column
*/
dropColumnComment(column) {
dropColumnCommentIfExists(column) {
const { schemaName, columnName, pureName } = column;
const fullName = `${schemaName && schemaName + '.'}${pureName}`;
this.put('&>^if ^exists (&n');
this.put('&>^select 1 ^from sys.extended_properties&n');
this.put("^where major_id = OBJECT_ID('%s')&n", fullName);
this.put(
"^and minor_id = (^select column_id ^from sys.columns ^where object_id = OBJECT_ID('%s') ^and name = '%s')&n",
fullName,
columnName
);
this.put("^and name = N'MS_Description'&<&<&n");
this.put(')&n');
this.put('&>^begin&n');
this.put('&>^exec sp_dropextendedproperty&n');
this.put("@name = N'MS_Description',");
this.put("@name = N'MS_Description',&n");
this.put("@level0type = N'SCHEMA', @level0name = '%s',&n", schemaName);
this.put("@level1type = N'TABLE', @level1name = '%s',&n", pureName);
this.put("@level2type = N'COLUMN', @level2name = '%s'&<", columnName);
this.put("@level2type = N'COLUMN', @level2name = '%s'&<&n", columnName);
this.put('^end');
this.endCommand();
}