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The document discusses different types of joins in SQL including inner joins, outer joins, equi joins, and self joins. Inner joins return rows that match between tables, outer joins return all rows including non-matches, and equi joins join tables on equality of columns. Examples are provided to demonstrate left, right, full, and self outer joins as well as equi joins on the same table.
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In this presentation we are telling you guys that In Microsoft Excel How to use Hlookup find an exact match.
The H in HLOOKUP stands for horizontal.
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In this presentation we are telling you guys that In Microsoft Excel How to use Hlookup find an exact match.
The H in HLOOKUP stands for horizontal.
Hlookup Function is used to search a value in another Table and if found return the corresponding value of that table for the specified row.
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This document provides an introduction to fundamental spreadsheet skills. It discusses what spreadsheets are, how they are made up of cells organized in rows and columns, and how cells can contain text, numbers, or formulas. It describes common formatting options and how formulas use mathematical and relational operators to perform calculations by referring to cell ranges. Functions like SUM, AVERAGE, MAX and MIN are introduced which make calculations easier. The document also covers filling formulas across cells and using absolute cell references.
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1 Week 4 What Well Be Working on This Week B.docx
1
Week 4 What We'll Be Working on This Week
Besides typing data into fields, there are a number of excellent ways in which you can populate your
Access tables. You can use the Paste Append command to:
copy records from one table to another, either within a single database file or from one
database to another
copy records within the same table
You can also import Excel data into an Access table,
The techniques for transferring data from one table to another or from one database to another will be
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tremendous time savings.
Two other excellent options that are available to you in Access are the ability to create drop-down
lists from which the user may simply select an item rather than typing. In this way, many typing errors
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Value Lists are extremely easy to create, and display static drop-down lists of items for the
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Goals:
Using the Paste Append command to copy records from one table to another page 2
Using the Paste Append command to copy records within a table page 7
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This is where we're headed this week. So here we go.
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Goals for this section:
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Using the Paste Append command to copy records within a table
Using the Paste Append Command to Copy Records between Tables
So far, we've seen how you can copy the structure of a table and use it as the basis for another table.
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- 2. Hints give specific information that we know about our data and application. A way to override the default query optimization in the DBMS Influence the execution plan of query www.orienit.com
- 3. Oracle optimizer may not always choose the best execution plan Using hints may improve the performance by changing the execution plan oracle takes. www.orienit.com
- 4. Hints can be used in the Select, Delete, and Update clauses. In each statement, the hint goes directly after the Select, Delete, or Update keyword. A few hints use Insert. Hints are placed in the /*+ */ tag, where the hint goes after the + sign Ex: SELECT /*+ ALL_ROWS */ From… www.orienit.com
- 5. Approach hints Access hints Join hints Misc. hints www.orienit.com
- 6. ALL_ROWS: Minimizes total resource consumption. Results will be returned only after all processing has been completed FIRST_ROWS(n): Minimized response time, or minimal resource usage to return the first n rows. www.orienit.com
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