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<TITLE>Matching with Wildcards in a SQL Statement (Java Developers Almanac Example)
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<h3>e257. Matching with Wildcards in a SQL Statement</h3>
SQL provides wildcard matching of text using the <code>LIKE</code> clause. Here is
a SQL statement that uses a <code>LIKE</code> clause and a wildcard character.
This SQL statement will find all rows with names that start with
<code>Pat</code>.
<pre> SELECT * FROM my_table WHERE name LIKE 'Pat%'
</pre>
There are two wildcard characters available. The underscore (_)
matches any character. The percent sign (%) matches zero or more
characters.
<pre> try {
// Create a statement
Statement stmt = <font color="#0066ff"><i>connection</i></font>.createStatement();
// Select the row if col_string contains the word pat
String sql = <font color="#0066ff"><i>"SELECT * FROM my_table WHERE col_string LIKE '%pat%'"</i></font>;
// Select the row if col_string ends with the word pat
sql = <font color="#0066ff"><i>"SELECT * FROM my_table WHERE col_string LIKE 'pat%'"</i></font>;
// Select the row if col_string starts with abc and ends with xyz
sql = <font color="#0066ff"><i>"SELECT * FROM my_table WHERE col_string LIKE 'abc%xyz'"</i></font>;
// Select the row if col_string equals the word pat%
sql = <font color="#0066ff"><i>"SELECT * FROM my_table WHERE col_string LIKE 'pat\\%'"</i></font>;
// Select the row if col_string has 3 characters and starts with p and ends with t
sql = <font color="#0066ff"><i>"SELECT * FROM my_table WHERE col_string LIKE 'p_t'"</i></font>;
// Select the row if col_string equals p_t
sql = <font color="#0066ff"><i>"SELECT * FROM my_table WHERE col_string LIKE 'p\\_t'"</i></font>;
// Execute the query
ResultSet resultSet = stmt.executeQuery(sql);
} catch (SQLException e) {
}
</pre>
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<b>Related Examples</b></font></td>
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e251. <a class="eglink" href="CreateResultSet.html?l=rel">
Getting Rows from a Database Table
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e252. <a class="eglink" href="GetRsData.html?l=rel">
Getting Data from a Result Set
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e253. <a class="eglink" href="IsNull.html?l=rel">
Determining If a Fetched Value Is NULL
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e254. <a class="eglink" href="GetRsColCount.html?l=rel">
Getting the Column Names in a Result Set
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e255. <a class="eglink" href="GetRowCountUsingCount.html?l=rel">
Getting the Number of Rows in a Database Table
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e256. <a class="eglink" href="GetBlob.html?l=rel">
Getting BLOB Data from a Database Table
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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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Deleting Data
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Drivers
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Importing%20and%20Exporting">
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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Procedures and Functions
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Scrollable Result Sets
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Tables
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Updatable%20Result%20Sets">
Updatable Result Sets
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