Solutions for INSERT OR UPDATE on SQL Server

Assume a table structure of MyTable(KEY, datafield1, datafield2...).

Often I want to either update an existing record, or insert a new record if it doesn’t exist.

Essentially:

IF (key exists)
  run update command
ELSE
  run insert command

What’s the best performing way to write this?

Related Posts:

  1. Self Join to get employee manager name
  2. The ALTER TABLE statement conflicted with the FOREIGN KEY constraint
  3. The backend version is not supported to design database diagrams or tables
  4. “select * into table” Will it work for inserting data into existing table
  5. MySQL Error: : ‘Access denied for user ‘root’@’localhost’
  6. What is the difference between “INNER JOIN” and “OUTER JOIN”?
  7. What is the difference between “INNER JOIN” and “OUTER JOIN”?
  8. What is an MDF file? [closed]
  9. Selecting COUNT(*) with DISTINCT
  10. Case in Select Statement
  11. ORA-00904: invalid identifier
  12. Inserting multiple rows in a single SQL query? [duplicate]
  13. Conversion failed when converting date and/or time from character string while inserting datetime
  14. How do I UPDATE from a SELECT in SQL Server?
  15. SQL query to select dates between two dates
  16. When should I use CROSS APPLY over INNER JOIN?
  17. Insert Data Into Temp Table with Query
  18. MySQL Error: : ‘Access denied for user ‘root’@’localhost’
  19. How to create Temp table with SELECT * INTO tempTable FROM CTE Query
  20. NOT IN vs NOT EXISTS
  21. How can I do an UPDATE statement with JOIN in SQL Server?
  22. Must declare the scalar variable
  23. Must declare the scalar variable
  24. INSERT statement conflicted with the FOREIGN KEY constraint – SQL Server
  25. Efficiently convert rows to columns in sql server
  26. Nested select statement in SQL Server
  27. INSERT statement conflicted with the FOREIGN KEY constraint – SQL Server
  28. How do I escape a single quote in SQL Server?
  29. Case statement in MySQL
  30. T-SQL split string based on delimiter
  31. Drop a temporary table if it exists
  32. IDENTITY_INSERT is set to OFF – How to turn it ON?
  33. Column name or number of supplied values does not match table definition
  34. Inserting data into a temporary table
  35. Can a foreign key be NULL and/or duplicate?
  36. Why does NULL = NULL evaluate to false in SQL server
  37. CREATE VIEW must be the only statement in the batch
  38. SQL Server FOR EACH Loop
  39. Difference between JOIN and INNER JOIN
  40. Best way to do nested case statement logic in SQL Server
  41. What is the difference between JOIN and UNION?
  42. Error Code: 2013. Lost connection to MySQL server during query
  43. “CASE” statement within “WHERE” clause in SQL Server 2008
  44. Get day of week in SQL Server 2005/2008
  45. What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
  46. incorrect syntax error CREATE VIEW must be the only statement in the batch
  47. DateTime2 vs DateTime in SQL Server
  48. Difference between numeric, float and decimal in SQL Server
  49. SQL Server Insert if not exists
  50. SQL Server: Invalid Column Name
  51. MySQL Error 1264: out of range value for column
  52. SQL Server reports ‘Invalid column name’, but the column is present and the query works through management studio
  53. How to parse XML data in SQL server table
  54. What is the equivalent of ‘describe table’ in SQL Server?
  55. How do I query for all dates greater than a certain date in SQL Server?
  56. String or binary data would be truncated. The statement has been terminated
  57. Add a column with a default value to an existing table in SQL Server
  58. Error converting data type varchar to float
  59. Remote table-Valued Function Calls are not allowed
  60. How to concatenate text from multiple rows into a single text string in SQL Server
  61. Count(*) vs Count(1) – SQL Server
  62. Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
  63. Determine ROW that caused “unexpected end of file” error in BULK INSERT?
  64. Determine ROW that caused “unexpected end of file” error in BULK INSERT?
  65. Conversion failed when converting the varchar value ‘simple, ‘ to data type int
  66. Exclude a column using SELECT * [except columnA] FROM tableA?
  67. Bulk load data conversion error (type mismatch or invalid character for the specified codepage) for row 1, column 4 (Year)
  68. Why is SQL server throwing this error: Cannot insert the value NULL into column ‘id’?
  69. Postgres Error: More than one row returned by a subquery used as an expression
  70. Bulk load data conversion error (truncation)
  71. Insert into a MySQL table or update if exists
  72. How do I reset a sequence in Oracle?
  73. SQL “select where not in subquery” returns no results
  74. ListAGG in SQLSERVER
  75. Is there a Max function in SQL Server that takes two values like Math.Max in .NET?
  76. ‘CREATE PROCEDURE’ must be the only statement in the batch (Erro)
  77. what is the difference between triggers, assertions and checks (in database)
  78. Is it possible to specify condition in Count()?
  79. SQL Server dynamic PIVOT query?
  80. Incorrect syntax near ”
  81. SQL Server: Make all UPPER case to Proper Case/Title Case
  82. How do I query for all dates greater than a certain date in SQL Server?
  83. Temporary table in SQL server causing ‘ There is already an object named’ error
  84. SQL Server “cannot perform an aggregate function on an expression containing an aggregate or a subquery”, but Sybase can
  85. Get everything after and before certain character in SQL Server
  86. How to do a batch insert in MySQL
  87. How to calculate age (in years) based on Date of Birth and getDate()
  88. Text was truncated or one or more characters had no match in the target code page including the primary key in an unpivot
  89. How can I group by date time column without taking time into consideration
  90. What are database constraints?
  91. Inner Joining three tables
  92. Append table to an existing one: SQL Server
  93. SQL Server – An expression of non-boolean type specified in a context where a condition is expected, near ‘RETURN’
  94. INSERT VALUES WHERE NOT EXISTS
  95. SUM OVER PARTITION BY
  96. CASE IN statement with multiple values
  97. How to implement LIMIT with SQL Server? [duplicate]
  98. Update query using Subquery in Sql Server
  99. Varchar invalid for Sum operator
  100. Cannot insert explicit value for identity column in table ‘table’ when IDENTITY_INSERT is set to OFF

Leave a Comment