Join Bill Weinman for an in-depth discussion in this video Deleting data from a table, part of PostgreSQL 9 with PHP Essential Training.
To delete rows from your table, you simply use the SQL delete statement, and…we'll take a look at that in PHP, making a working copy here of start.php.…I'm going to call this one delete.php. And of course when you're all done,…you're welcome to delete it.…Before you continue, it's important that you update the password in this file to…match the password you entered when you created the SID user in pgAdmin.…You see here on line 14 I have foo.bar.…
This is where you'll need to put the password for your SID user exactly as you…entered it in pgAdmin.…I'll start down here in the main function, where we have the "database…operations go here."…We'll just delete this foreach, and we'll go ahead and delete record 3.…So I'll say $id = 3 and message( 'deleting id %d' $id. And then we'll use the…sql_do("DELETE FROM $tn WHERE id =, and we'll use the SQL placeholder…question mark there and type the variable name after it. And then we can say 'after delete:…There are %d records in the table,' and then we'll call count_recs.…
- Installing PostgreSQL
- Understanding database architecture
- Inserting, updating, and deleting data in a table
- Creating a database library
- Indexing ID fields
- Storing numbers, text, and Boolean values
- Reading data
- Using casts to force type
- Using mathematical functions
- Concatenating strings
- Working with date and time functions and operators
- Defining CRUD
- Using PHP to insert, read, update, and delete rows in a database
Skill Level Beginner
1. Quick Start
2. Creating a Database
3. Data Types
4. Storing and Reading Data
5. SQL Expressions
6. Mathematical Functions and Operators
Using math functions3m 2s
7. String Functions and Operators
8. Date and Time Functions and Operators
9. PHP Interfaces
10. Web Applications
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