SQL Data Types for MySQL, SQL Server, and MS Access - W3Schools
An SQL developer must decide what type of data that will be stored inside each column when creating a table. The data type is a guideline for SQL to understand what type of data is expected inside of …
SQL IN Operator - W3Schools
The SQL IN Operator The IN operator allows you to specify multiple values in a WHERE clause. The IN operator is a shorthand for multiple OR conditions.
SQL Server Functions - W3Schools
SQL Server has many built-in functions. This reference contains string, numeric, date, conversion, and some advanced functions in SQL Server.
SQL Server CAST () Function - W3Schools
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SQL Server CONVERT () Function - W3Schools
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SQL WHERE Clause - W3Schools
The SQL WHERE Clause The WHERE clause is used to filter records. It is used to extract only those records that fulfill a specified condition.
MySQL Data Types - W3Schools
An SQL developer must decide what type of data that will be stored inside each column when creating a table. The data type is a guideline for SQL to understand what type of data is expected inside of …
MySQL CHARACTER_LENGTH () Function - W3Schools
Definition and Usage The CHARACTER_LENGTH () function return the length of a string (in characters). Note: This function is equal to the CHAR_LENGTH () function. Syntax …
MySQL MID () Function - W3Schools
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SQL Examples - W3Schools
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