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SQLUpdate[conn,table,cols,data]

updates data in a table in an SQL connection.

SQLUpdate[conn,table,cols,data,cond]

updates the data matching cond.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
See Also
Tech Notes
Related Guides
DatabaseLink`
DatabaseLink`

SQLUpdate

SQLUpdate[conn,table,cols,data]

updates data in a table in an SQL connection.

SQLUpdate[conn,table,cols,data,cond]

updates the data matching cond.

Details and Options

  • To use SQLUpdate, you first need to load DatabaseLink using Needs["DatabaseLink`"].
  • Returns an integer specifying the number of rows affected by the query.
  • The following option can be given:
  • "Timeout"$SQLTimeoutthe timeout for the query

Examples

Basic Examples  (1)

Wolfram Language code: Needs["DatabaseLink`"]

If you find that the examples in this section do not work as shown, you may need to install or restore the example database with the "DatabaseLink`DatabaseExamples`" package, as described in Using the Example Databases.

Wolfram Language code: conn = OpenSQLConnection["demo"];

Create a table and insert some data:

Wolfram Language code: SQLCreateTable[conn, SQLTable["TEST"], { SQLColumn["COL1", "DataTypeName" -> "INTEGER"], SQLColumn["COL2", "DataTypeName" -> "DOUBLE"] }];
Wolfram Language code: SQLInsert[conn, "TEST", {"COL1", "COL2"}, {10, 10.5}];
Wolfram Language code: SQLSelect[conn, "TEST"]

Update all the data:

Wolfram Language code: SQLUpdate[conn, "TEST", {"COL1", "COL2"}, {12, 12.5}]
Wolfram Language code: SQLSelect[conn, "TEST"]

Insert more data:

Wolfram Language code: SQLInsert[conn, "TEST", {"COL1", "COL2"}, {20, 20.5}];
Wolfram Language code: SQLSelect[conn, "TEST"]

Update only data matching a condition:

Wolfram Language code: SQLUpdate[conn, "TEST", {"COL1", "COL2"}, {4, 1.1}, SQLColumn["COL1"] < 15 ]
Wolfram Language code: SQLSelect[conn, "TEST"]
Wolfram Language code: SQLDropTable[conn, "TEST"];
Wolfram Language code: CloseSQLConnection[conn];