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| <meta name="Description" content="4.14.5 Base columns and generated columns A column of a base table is either a base column or a generated column. A base column is one that is not a generated column. A generated column is one whose values are determined by evaluation of a generation expression, a value expression whose declared type is by implication that of the column. A generation expression can reference base columns of the base table to which it belongs but cannot otherwise access SQLdata. Thus, the value of the field corresponding to a generated column in row R is determined by the values of zero or more other fields of R."> |
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| <p><font FACE="Arial, Geneva" SIZE=3><b><<Interface>> ValueExpression {Analysis}</b></font></p> |
| <font FACE="Arial, Geneva" SIZE=2><b>Documentation</b></font><BR><font FACE="Arial, Geneva" SIZE=2>4.14.5 Base columns and generated columns |
| <BR> |
| <BR>A column of a base table is either a base column or a generated column. A base column is one that is not a generated column. |
| <BR> |
| <BR>A generated column is one whose values are determined by evaluation of a generation expression, a <value expression> whose declared type is by implication that of the column. |
| <BR> |
| <BR>A generation expression can reference base columns of the base table to which it belongs but cannot otherwise access SQLdata. Thus, the value of the field corresponding to a generated column in row R is determined by the values of zero or more other fields of R. |
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| <TABLE BORDER=1 CELLSPACING=0 CELLPADDING=3><TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Parent Package</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><a href="cat3f27d6790133.htm" target="contents_frame">Expressions</a></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Abstract</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>No</font></TD></TR><TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Export Control</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>PublicAccess</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Link Class for</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>None</font></TD></TR><TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Class Kind</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>NormalClass</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Cardinality</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>n</font></TD></TR><TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Space</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Concurrency</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>Sequential</font></TD></TR><TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Persistence</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>No</font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD></TR></TABLE><BR><BR> |
| <font FACE="Arial, Geneva" SIZE=2><b>Operations</b></font> |
| <TABLE BORDER=1 CELLSPACING=0 CELLPADDING=3> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Name</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Signature</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Class</b></font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><IMG SRC="../../../webviewer/34.jpg"BORDER=0><a href="op404cd826033e.htm" target="contents_frame">getSQL</a></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>String <IMG SRC="../../../webviewer/34.jpg"BORDER=0>getSQL ()</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><a href="class3f4d273d00a9.htm" target="contents_frame">ValueExpression</a></font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><IMG SRC="../../../webviewer/34.jpg"BORDER=0><a href="op4193e1fa0221.htm" target="contents_frame">setSQL</a></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>void <IMG SRC="../../../webviewer/34.jpg"BORDER=0>setSQL (String sqlText)</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><a href="class3f4d273d00a9.htm" target="contents_frame">ValueExpression</a></font></TD></TR> |
| </TABLE><BR><BR> |
| <font FACE="Arial, Geneva" SIZE=2><b>Associations</b></font> |
| <TABLE BORDER=1 CELLSPACING=0 CELLPADDING=3> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Name</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>My Role</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>My Class</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Other Role</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>Other Element</b></font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><a href="../../../looseends/ass3ea412a40286.htm" target="contents_frame">--Not Named--</a></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><IMG SRC="../../../webviewer/priv.gif"BORDER=0><a href="../../../looseends/role3ea412a501fa.htm" target="contents_frame">generateExpression</a></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><a href="class3f4d273d00a9.htm" target="contents_frame">ValueExpression</a></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><IMG SRC="../../../webviewer/priv.gif"BORDER=0><a href="../../../looseends/role3ea412a501fc.htm" target="contents_frame">--Not Named--</a></font></TD><TD><font FACE="Arial, Geneva" SIZE=2><a href="../cat4071d00f009f/class3e9b2aff0392.htm" target="contents_frame">Column</a></font></TD></TR> |
| </TABLE><BR><BR> |
| <BR><p><font FACE="Arial, Geneva" SIZE=3><b>Property Settings</b></font></p> |
| <font FACE="Arial, Geneva" SIZE=2><b>Data Modeler</b></font> |
| <TABLE BORDER=1 CELLSPACING=0 CELLPADDING=3> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>dmItem</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>DMName</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>IsTable</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>IsView</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>IsDomain</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>IsSPPackage</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>Synonymns</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>TableSpaceID</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>SourceId</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>SourceType</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>CorrelationName</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>SelectClause</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>IsUpdateable</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>True</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>CheckOption</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>None</font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>IsSnapShot</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>IsDistinct</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD></TR> |
| <TR><TD><font FACE="Arial, Geneva" SIZE=2><b>PersistToServer</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2> </font></TD><TD><font FACE="Arial, Geneva" SIZE=2><b>IsPackage</b></font></TD><TD><font FACE="Arial, Geneva" SIZE=2>False</font></TD></TR> |
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