private static String buildAddColumnComment(final String schemaName, final String tableName,
            final String columnName,
            String comment) {
        return new StringBuilder()
                .append("EXEC sys.sp_addextendedproperty @name=N'MS_Description',")
                .append(" @value=N'")
                .append(columnName)
                .append("' , @level0type=N'SCHEMA',@level0name=N'")
                .append(schemaName)
                .append("', @level1type=N'TABLE',@level1name=N'")
                .append(tableName)
                .append("', @level2type=N'COLUMN',@level2name=N'")
                .append(comment)
                .append("'")
                .toString();
    }
Build alter table add column comment SQL.

@param schemaName SQLServer schema name
@param tableName SQLServer table name
@param columnName SQLServer column name
@param comment SQLServer column comment
@return SQL string
inlong-manager/manager-service/src/main/java/org/apache/inlong/manager/service/resource/sink/sqlserver/SQLServerSqlBuilder.java