Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind MS Access InStr() Function?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ InStr("Customer", "t") AS MatchPosition;3Order
Put the learning moves in the order that makes the concept easiest to apply.
The InStr() function gets the position of the first occurrence of a string in another.
Definition and Usage
MS Access InStr() Function
Example
SELECT InStr("Customer", "t") AS MatchPosition;Definition and Usage
The InStr() function gets the position of the first occurrence of a string in another.
This function performs a case-insensitive search.
Syntax
InStr(
start
,
string1
,
string2
,
compare
)Parameter Values
| Parameter | Description |
|---|---|
| start | Optional. The start position for the search. Position 1 is default |
| string1 | Required. The string to be searched |
| string2 | Required. The string to search for |
| compare | Optional. The type of string comparison. Possible values: -1: Use the setting of Option Compare 0: Binary comparison 1: Textual comparison 2: Comparison based on info in your database |
Return Values
- If string2 is not found within string1, this function returns 0
- If string1 is zero-length, this function returns 0
- If string1 is null, this function returns null
- If string2 is zero-length, this function returns the value in the start parameter
- If start is > than the length of string2, this function returns 0
Technical Details
| Works in: | From Access 2000 |
|---|