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What are reserved words give 5 examples of reserved words in MySQL?
There are reserved words in MySQL which cannot be used as identifiers (table or column names etc.)…MySQL Reserved Words.
| ADD | ALL | ALTER |
|---|---|---|
| CASE | CHANGE | CHAR |
| CHARACTER | CHECK | COLLATE |
| COLUMN | COLUMNS | CONSTRAINT |
| CREATE | CROSS | CURRENT_DATE |
What are reserved words in MySQL?
Certain keywords, such as SELECT , DELETE , or BIGINT , are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. KEYWORDS table lists the words considered keywords by MySQL and indicates whether they are reserved.
What is the difference between keywords and reserved words?
Keywords have a special meaning in a language, and are part of the syntax. Reserved words are words that cannot be used as identifiers (variables, functions, etc.), because they are reserved by the language. In practice most keywords are reserved words and vice versa.
Where do I find reserved words in MySQL?
The INFORMATION_SCHEMA.KEYWORDS table lists the words considered keywords by MySQL and indicates whether they are reserved. See Section 26.3.17, “The INFORMATION_SCHEMA KEYWORDS Table” . The following list shows the keywords and reserved words in MySQL 8.0, along with changes to individual words from version to version.
Which is a reserved word in SQL 9.3?
9.3 Keywords and Reserved Words Keywords are words that have significance in SQL. Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions.
What are the keywords in MySQL 5.7?
Keywords are words that have significance in SQL. Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names.
Which is a reserved word but not a keyword?
BEGIN and END are keywords but not reserved, so their use as identifiers does not require quoting. INTERVAL is a reserved keyword and must be quoted to be used as an identifier: Exception: A word that follows a period in a qualified name must be an identifier, so it need not be quoted even if it is reserved: