What is the difference between mysql and sqlserver syntax

The syntax differences between MySQL and SQL Server are mainly reflected in database objects, data types, SQL statements and other aspects. Database object differences include the storage engine and how filegroups are specified, and the creation of indexes and constraints. Data type differences involve differences in numeric types, character types, and date and time types. SQL statement differences are reflected in result set limitations, data insertion, update and delete operations, etc. Other differences include how identity columns, views, and stored procedures are created. Understanding these differences is important to avoid errors when using different database systems.

The syntax difference between MySQL and SQL Server

Database objects

• Table: MySQL uses ENGINE to specify the storage engine, while SQL Server uses FILEGROUP to specify the file group.
• Index: MySQL uses CREATE INDEX, while SQL Server uses CREATE INDEX or CREATE UNIQUE INDEX.
• Constraints: MySQL uses the CONSTRAINT clause, while SQL Server uses CHECK or FOREIGN KEY.

Data type

• Numeric type: MySQL has DECIMAL and NUMERIC type, while SQL Server only has the NUMERIC type.
• Character types: MySQL has CHAR and VARCHAR types, while SQL Server only has the VARCHAR type.
• Date and time types: MySQL uses the DATETIME and TIMESTAMP types, while SQL Server uses the DATETIME and SMALLDATETIME type.

SQL statement

• SELECT statement: MySQL uses the LIMIT clause to limit the result set, SQL Server uses the TOP clause.
• INSERT statement: MySQL uses INSERT INTO ... VALUES, while SQL Server uses INSERT INTO ... VALUES or INSERT INTO... SELECT.
• UPDATE statement: MySQL uses the SET clause to update data, while SQL Server uses the SET or UPDATE clause .
• DELETE statement: MySQL uses DELETE FROM ... WHERE, while SQL Server uses DELETE FROM ... WHERE or DELETE....

Other differences

• Identity columns: MySQL uses AUTO_INCREMENT to create identity columns, while SQL Server uses IDENTITY.
• Views: MySQL uses CREATE VIEW, while SQL Server uses CREATE VIEW or SELECT INTO.
• Stored procedures: MySQL uses CREATE PROCEDURE, while SQL Server uses CREATE PROCEDURE or CREATE FUNCTION.

These are just some of the many syntax differences between MySQL and SQL Server. Understanding these differences is critical to avoiding errors when working with different database systems.

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