How can we use MySQL function STR_TO_DATE(Column, ‘%input_format’)? By using column aliases, the query output can become more meaningful. What I wanted to know is, why the word ID has to be quoted, or which functionality is connected to ID, that I have to quote it for using it as a column name. To use a reserved word or a name with "illegal" characters (such as a space) for an identifier, you need to quote the identifier. ; Third, specify the new name for the column after the TO keyword. As this is somehow not a problem for MySQL we decided to add support for PostgreSQL also by adding quotes where needed. Eg. While creating a MySQL table use the reserved keyword ‘Key’ Can we use “rank” as column name with MySQL8? And it becomes case sensitive. ALTER TABLE test RENAME COLUMN sum TO "group"; Note that when using quoted idenfifiers, you need to always quote it. Problem/Motivation Some migrate tables use reserved keywords as column name like OFFSET currently causing exceptions on PostgreSQL because such names need quoting to work. "COLUMN" = 'description' Is "type" a reserved word in mysql, Avoid using ISO reserved keywords for object names and identifiers. I want to use the legacy tables to create a view to perform calcuations using SUM(). In this statement: First, specify the name of the table that contains the column which you want to rename after the ALTER TABLE clause. Can we use MySQL keyword as alias name for a column? Use double quotes and be sure to use the case that the column name was defined with, default is UPPER case. This issue is part of [#2157455]. When copying the military features schema to a postgres database the entity column is changed to database.table.entity because the entity field appears to be a reserved keyword. ArcGIS does not consume quotes, so it is looking for that column name to be as not "as" and not find it. ; The COLUMN keyword in the statement is optional therefore you can omit it like this: Postgres differentiates from the reserved word by putting it in quotes. bad: cast varchar(256), good: "cast" varchar(256) However, the problem is that all of the built in Postgres handling for queries do not wrap field names in double quotes. "group" is a different column name than "GROUP". E.g. need help specifying potentially reserved words as strings in postgres query. Proposed resolution Add new reserved words for PostgreSQL … The first character in a name can be a letter, @, _, or #. postgresql. Apparently 'cast' is a reserved word in Postgres and you cannot have a field by that name, you can however declare it as long as it is double quoted. ... AND translations. A name cannot be the same as another PostgreSQL object that has the same type. Is name a reserved word in MySQL? The keyword AS can be used between the column or table name and the alias name, but this is optional. A name can contain up to 128 characters. The ODBC reserved keyword list, shown in the following table, is the same Transact-SQL reserved keywords can be used as identifiers or names of databases or database objects, such as tables, columns, views, and so on. A name cannot be a PostgreSQL reserved word, such as WHERE or VIEW. How can we use the MySQL reserved words as an identifier? Also, we can use reserved keywords as a column alias, but not for tables. I can NOT get this to work as the parser seems to pick up "percent" as a function and confuse the SQL when it … I am not sure how you created that table b/c at times Postgres will automatically quote things even without you knowing it. One of the legacy columns is called "percent" (as reserved word). 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