Database Design

What does it means not qualify a column in using clause?

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2016-07-14 15:12:04
2016-07-14 15:12:04

Column names do not have to be unique within a database; they only have to be unique within a particular table. If a query joins two table where each contains a field with the same name and that field is specified in the SELECT or WHERE clause, not qualifying the column name with the table name results in ambiguity as to which field is desired.

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No the main clause is main clause is more important than the subordinate clause subordinate clause is just used to join sentences instead of using a full stop. Eg who is a subordinate clause


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A clause is a specific part of a legal document. An example sentence would be: She was advised to read that clause very closely.


By means using Filter . From filtered column We should select Custom , In custom we should select begins with where we can give the name or number


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Insert a column in what? I assume the question could be about using a word-processing program, or even about using a spreadsheet! More detailed information is needed.


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Disconnect the negative battery cable, using a socket. Remove the lower steering column shroud, using screwdriver. Lower the steering column by removing the three 15 mm nuts in the column support bracket on the instrument panel, using a socket. Pull the electrical plug out of the ignition switch. Remove the two bolts securing the ignition switch to the steering column, using the appropriate socket. Lift the ignition switch off the column. Hope this helps.


Subjunctive, basically because the first clause is a "want" and then after is que.


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It depends on who is writing the column. Ask this question again using words that make it clear what you want to know.


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Quietly. Qualify. Quality. Quickly.


Use the square brackets: for example a table named: "User Password" would be called [User Password] this also works when a table or a column has a keyword as a name Table ID is called using [ID]


The adverb is "downstairs." *The clause "thinking the world was on fire" is an adverb clause using the participle thinking.



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