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dev:sql:functions:current_row [2010/07/09 16:56] tdo |
dev:sql:functions:current_row [2010/07/28 22:59] els |
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| - | <html><div align="center"><span style="color:red">DRAFT</span></div></html> | ||
| - | ====== Omnidex SQL Function: $CURRENT_ROW ====== | ||
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| + | ====== Omnidex SQL Function: $$CURRENT_ROW ====== | ||
| ===== Description ===== | ===== Description ===== | ||
| - | Returns the current row as an ascending number from starting with 1. | + | The $CURRENT_ROW function return the current row number for the result set. The first row returned from a SELECT statement is given a value of 1, and each successive row is incremented by one. This is done as the last step of a statement, and so $CURRENT_ROW can only be used as a select-item. It cannot be used in the WHERE, GROUP BY, ORDER BY or HAVING clauses. |
| - | This number is assigned after all other clauses are processed. | + | The $CURRENT_ROW should not be confused with the $ROWID. The $ROWID comes from the underlying database, where $CURRENT_ROW is simply the current row number of the result set. |
| - | This function may only be used as a select-item. It may NOT be used in a WHERE , GROUP BY, ORDER BY, or HAVING clause. | + | This function returns an INTEGER datatype. |
| - | + | ||
| - | The return data type is INTEGER. | + | |
| ===== Syntax ===== | ===== Syntax ===== | ||
| - | $CURRENT_ROW | + | $CURRENT_ROW |
| - | ===== Example ===== | + | |
| - | ==== Example 1 ==== | + | |
| - | select $current_row, company from customers | + | |
| - | $CURRENT_ROW COMPANY | + | ===== Examples ===== |
| - | ------------ ------------------------------------- | + | ==== Example 1: Column ==== |
| + | <code> | ||
| + | > select $current_row, name from individuals; | ||
| - | 1 Dynamic Information Systems Corporation | + | $CURRENT_R NAME |
| + | ---------- -------------------------------------------------- | ||
| + | 1 MS. MARY LEWIS | ||
| + | 2 MRS. ALICE R TOLLIVER | ||
| + | 3 MR. SIDNEY K TOLLIVER | ||
| + | 4 MRS. JENNIFER J HOPKINS | ||
| + | 5 MR. CHARLIE HOPKINS | ||
| + | 6 MS. KIMBERLY BLUE | ||
| + | 7 KATHLEEN TUCKER</code> | ||
| - | 2 The Bovaird Supply Company | + | ====== Additional Resources ====== |
| - | 3 Graham Container Companies | + | See also: |
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