RETRIEVING A SINGLE VALUE FROM A QUERY

W ith the introduction of Oracle9i Application Server (9iAS), Oracle presents the development community with a full-featured suite of tools and applications to develop, deploy, manage, and tune applications for the Web. Oracle9iAS is a reliable, scalable, middle-tier application serv[r]

query plans as the Distribute Streams , Repartition Streams , and Gather Streams
logical operators. One or more of these operators can appear in the execution plan output of a query plan for a parallel query.
Whereas a parallel query execution[r]

26.7 ISSUES IN HIGH-DIMENSIONAL INDEXING
The spatial indexing techniques that we have discussed work quite well for two- and three-dimensional datasets, which are encountered in many applications of spatial data. In some applications such as content-based image retrieval or text indexing, howeve[r]

■ Note The cells referred to in the reference argument must be a single cell or a range of contiguous cells. Otherwise, the OFFSET worksheet function returns a #VALUE! error value. Also, if the rows or cols arguments return references that go past the ed[r]

AUTHENTICATING USERS WITH A DATABASE
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Strictly speaking, its not necessary to use a bound parameter for $key, because it doesnt come from user input. If you embed it directly in the query, the whole query needs to be wrapped in double quotes, and $key nee[r]

Solution
Use expression columns to retrieve lookup values based on DataRelation objects.
The sample code creates a new DataSet containing the Orders table and the Order Details table from Northwind. A DataRelation is created between the tables. A column is added to[r]

ta phải dùng “from a single-family house” thay vì dùng “from a single-family home” vì home đồng nghĩa với family ta phải dùng “has” thay vì dùng “have” vì cụm từ the number of Ns được ch[r]

If you check out this plan on an SQL Server 2008 server, you will notice some bitmap filters have also been applied. The bitmap filters, also called the bloom filters, are generated as a by-product of the hash joins. The bloom filters are data structures that can probabilistically test whe[r]

Microsoft introduced the PIVOT method for coding crosstab queries with SQL Server 2005. The pivot method deviates from the normal logical query flow by performing the aggregate GROUP BY function and generating the crosstab results as a data source within the FROM clause.[r]

A query that may give slightly different results is
select name,value from v$spparameter order by name;
The difference is the view from which the parameter names and values are taken. V$PARAMETER shows the parameter values currently in effect in the running ins[r]

Figure 10-10
If the user chooses Yes, to edit the list, the default Access Edit Items List form displays (see Figure 10-11). This default form is clearly designed to capture only a simple list of values, and it is intended to be used only when the combo box Row Source Type is set to V[r]

TRANG 1 [ Team LiB ] RECIPE 4.4 GETTING A SEQUENCE VALUE FROM ORACLE PROBLEM When you add a row into an Oracle table that uses a sequence to generate the value for a primary key column, [r]

measurement or a fixed number of measurements, a tolerance interval brackets a specified
percentage of all future measurements for a given set of predictor variable values. For example, to monitor future pressure measurements at 47 degrees for extreme values, either low[r]

Query 2: select trunc(1601.916, 2) from dual;
Query 3: select trunc(1601.916, -3) from dual;
Query 4: select trunc(1601.916) from dual;
Query 1 has a decimal precision parameter of 1, which implies that the source number is truncated a[r]

TRANG 7 _CHAPTER 4_ _Figure 4.1.7: Using a single op amp as a bridge _ _amplifier for a single-element varying bridge._ _Figure 4.1.6: Bridge considerations._ Regardless of its value, the[r]

phosphorene with a thickness ranging from 2.1 to over 20 nm. The I V characteristic of a typical 5 nm thick few-layer phosphorene fi eld-e ff ect transistor for back gate voltages ranging from þ 30 to 30 V, shown in Figure 4a, indicates a reduction of the to[r]

The top chart shows the raw values, and that can be quite useful. The bot­ tom one shows the standardized values. The curves in the two charts have the same shape; the only difference is the vertical scale. Remember that standard­ izing values converts them into the number of standard deviations