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<TITLE>Listing the System Functions Supported by a Database (Java Developers Almanac Example)
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<h1>The Java Developers Almanac 1.4</h1>
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<h3>e287. Listing the System Functions Supported by a Database</h3>
This example gets a list of system functions that a database supports.
<pre> try {
DatabaseMetaData dbmd = <font color="#0066ff"><i>connection</i></font>.getMetaData();
// Get the list of system functions
String[] systemFunctions = dbmd.getSystemFunctions().split(",\\s*");
} catch (SQLException e) {
}
</pre>
Examples in an Oracle database include:
<pre> DUMP, GREATEST, GREATEST_LB, LEAST, LEAST_UB, NVL, UID, USER, USERENV, VSIZE
</pre>
Examples in a MySQL database include:
<pre> DUMP, GREATEST, GREATEST_LB, LEAST, LEAST_UB, NVL, UID, USER, USERENV, VSIZE
</pre>
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<b>Related Examples</b></font></td>
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e284. <a class="eglink" href="GetSqlKeywords.html?l=rel">
Listing All Non-SQL92 Keywords Used by a Database
</a>
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e285. <a class="eglink" href="GetStringFunctions.html?l=rel">
Listing the String Functions Supported by a Database
</a>
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e286. <a class="eglink" href="GetNumericFunctions.html?l=rel">
Listing the Numeric Functions Supported by a Database
</a>
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e288. <a class="eglink" href="GetTimeDateFunctions.html?l=rel">
Listing the Time and Date Functions Supported by a Database
</a>
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e289. <a class="eglink" href="GetMaxTableNameLength.html?l=rel">
Getting the Maximum Table Name Length in a Database
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e290. <a class="eglink" href="GetTypeInfo.html?l=rel">
Listing Available SQL Types Used by a Database
</a>
<br>
e291. <a class="eglink" href="JdbcInt2Str.html?l=rel">
Getting the Name of a JDBC Type
</a>
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See also:
<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Batching">
Batching
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Connections
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Drivers
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Importing and Exporting
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Inserting%20and%20Updating%20Data">
Inserting and Updating Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Oracle%20OBJECTs">
Oracle OBJECTs
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Oracle%20VARRAYs">
Oracle VARRAYs
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Procedures%20and%20Functions">
Procedures and Functions
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Retrieving%20Data">
Retrieving Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Scrollable%20Result%20Sets">
Scrollable Result Sets
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Tables
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