DatabaseLink`
DatabaseLink`

SQLColumn

SQLColumn[…]

represents a column in an SQL table.

Details and Options

  • To use SQLColumn, you first need to load DatabaseLink using Needs["DatabaseLink`"].
  • The following options can be given:
  • "DataTypeName" Nonetype of the entry
    "DataLength" Nonemaximum length for variable length data
    "Default" Nonedefault value for column
    "Nullable" Falsewhether the entry can be null
    "PrimaryKey" Falseindicates a primary key column

Examples

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Basic Examples  (1)

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.

Open a connection:

List the columns in a table:

Select data matching a condition:

Use a prepared statement:

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.

Options  (5)

"DataTypeName"  (1)

Specify data types for columns:

"DataLength"  (1)

Specify data lengths for appropriate types:

"Default"  (1)

Specify column defaults:

"Nullable"  (1)

Allow nullable column values:

"PrimaryKey"  (1)

Specify a primary key column: