1.8 Getting a member according to primary key value
In the following product category table, ID field is the primary key. The task is to find the member whose ID field value is 5.
| Category |
|---|
| ID |
| Name |
| Description |
| … |
SPL script:
| A | |
|---|---|
| 1 | =connect(“db”) |
| 2 | =A1.query@x(“select * from Category”).keys(ID) |
| 3 | =A2.find(5) |
A1 Connect to the database;
A2 Retrieve Category table from the database and set ID as the primary key;
A3 Find the record whose primary key value is 5. If the desired primary key value does not exist or no primary key is defined, pfind() function returns null.
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