Advices

How do I represent a date in a table in SQL?

How do I represent a date in a table in SQL?

SQL Server comes with the following data types for storing a date or a date/time value in the database:

  1. DATE – format YYYY-MM-DD.
  2. DATETIME – format: YYYY-MM-DD HH:MI:SS.
  3. SMALLDATETIME – format: YYYY-MM-DD HH:MI:SS.
  4. TIMESTAMP – format: a unique number.

Can SQL column names have periods?

1. Only Use Lowercase Letters, Numbers, and Underscores. Don’t use dots, spaces, or dashes in database, schema, table, or column names.

How do I get a list of column names in a table in SQL?

To get the column name of a table we use sp_help with the name of the object or table name. sp_columns returns all the column names of the object. The following query will return the table’s column names: sp_columns @table_name = ‘News’

What are the rules for naming a table in SQL?

The rules for naming database objects (such as tables, columns, views, and database procedures) are as follows: Names can contain only alphanumeric characters and must begin with an alphabetic character or an underscore (_). Database names must begin with an alphabetic character, and cannot begin with an underscore.

How can check column in table in SQL?

Using the Information Schema

  1. SELECT TABLE_NAME FROM INFORMATION_SCHEMA. TABLES.
  2. SELECT TABLE_NAME, COLUMN_NAME FROM INFORMATION_SCHEMA. COLUMNS.
  3. SELECT COLUMN_NAME FROM INFORMATION_SCHEMA. COLUMNS WHERE TABLE_NAME = ‘Album’
  4. IF EXISTS( SELECT * FROM INFORMATION_SCHEMA.
  5. IF EXISTS( SELECT * FROM INFORMATION_SCHEMA.

What is the format of entering date into a database?

YYYY-MM-DD
What is the format of entering date into a database while inserting data into it? ‘YYYY-MM-DD’.

What will be the data type for date in a table?

The DATE type is used for values with a date part but no time part. It displays DATE values in ‘YYYY-MM-DD’ format. We can store any date value which is in the given range ‘1000-01-01’ to ‘9999-12-31’.

What should you do when naming a table column?

COLUMNS – (incl. Just like with naming tables, avoid using abbreviations, acronyms or special characters. All column names should use PascalCase to distinguish them from SQL keywords (camelCase).

  • October 21, 2022

You may also like...