Tip Bank

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View SQL Behind System Stored Procedures

If you are ever trying to write SQL to access SQL server’s system tables, it is often useful to look at SQL Server’s own system stored procedures. You can do

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Problem with Select Statement

Question: I’m writing a select statement to make a table name a variable whose value is set according to a condition: Var tablename;tablename := emp tableselect * from tablename; But

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Using Where on Fields of Differing Types

Question: I need to extract information using WHERE on fields in two different tables: one a text field, the other a numeric field. Both hold only numeric data. How can

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Meanings of RS232 Signals

Question: Can you explain the interaction of the RS232 signals (RTS, CTS, DTR, etc.). I need to write a software utility to transmit and receive characters between two computers, but

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Concatenating Fields

Question: How do I concatenate a value in Stored Procedures (e.g., select * from mytable, where mytable.field1 = field that I concatenate)? Answer: If you want to match field1 to