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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derbyTesting.functionTests.tests.lang   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.derbyTesting.functionTests.tests.lang.coalesceTests coalesceTests public class coalesceTests (Code) Coalesce/Value tests for various datatypes coalesce/value function takes arguments and returns the first argument that is not null. The arguments are evaluated in the order in which they are specified, and the result of the function is the first argument that is not null. The result can be null only if all the arguments can be null. The selected argument is converted, if necessary, to the attributes of the result. Field Summary final public static  String[][] resultDataTypeRulesTable      Method Summary public static  void dumpRS(ResultSet s)      public static  void dumpRSwithScale(ResultSet s)      public static  boolean isClobWithCharAndDateTypeArguments(String coalesceString)      public static  void main(String[] argv)      public static  void tablesForTestingAllDatatypesCombinations(Connection conn)      public static  void testAllDatatypesCombinations(Connection conn)      public static  void testCharCoalesce(Connection conn)      public static  void testCharForBitDataCoalesce(Connection conn)      public static  void testCoalesceSyntax(Connection conn)      public static  void testCompatibleDatatypesCombinations(Connection conn)      public static  void testDateCoalesce(Connection conn)      public static  void testMiscellaneousCoalesce(Connection conn)      public static  void testNumericCoalesce(Connection conn)      public static  void testTimeCoalesce(Connection conn)      public static  void testTimeStampCoalesce(Connection conn)      Field Detail resultDataTypeRulesTable final public static String[][] resultDataTypeRulesTable(Code) SQL Reference Guide for DB2 has section titled "Rules for result data types" at the following url http://publib.boulder.ibm.com/infocenter/db2help/index.jsp?topic=/com.ibm.db2.udb.doc/admin/r0008480.htm I have constructed following table based on various tables and information under "Rules for result data types" This table has FOR BIT DATA TYPES broken out into separate columns for clarity and testing Method Detail dumpRS public static void dumpRS(ResultSet s) throws SQLException(Code) dumpRSwithScale public static void dumpRSwithScale(ResultSet s) throws SQLException(Code) isClobWithCharAndDateTypeArguments public static boolean isClobWithCharAndDateTypeArguments(String coalesceString) throws Throwable(Code) main public static void main(String[] argv) throws Throwable(Code) tablesForTestingAllDatatypesCombinations public static void tablesForTestingAllDatatypesCombinations(Connection conn) throws Throwable(Code) testAllDatatypesCombinations public static void testAllDatatypesCombinations(Connection conn) throws Throwable(Code) testCharCoalesce public static void testCharCoalesce(Connection conn) throws Throwable(Code) testCharForBitDataCoalesce public static void testCharForBitDataCoalesce(Connection conn) throws Throwable(Code) testCoalesceSyntax public static void testCoalesceSyntax(Connection conn) throws Throwable(Code) testCompatibleDatatypesCombinations public static void testCompatibleDatatypesCombinations(Connection conn) throws Throwable(Code) testDateCoalesce public static void testDateCoalesce(Connection conn) throws Throwable(Code) testMiscellaneousCoalesce public static void testMiscellaneousCoalesce(Connection conn) throws Throwable(Code) testNumericCoalesce public static void testNumericCoalesce(Connection conn) throws Throwable(Code) testTimeCoalesce public static void testTimeCoalesce(Connection conn) throws Throwable(Code) testTimeStampCoalesce public static void testTimeStampCoalesce(Connection conn) throws Throwable(Code) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)