todo.txt

Transactions in export
Create view and routine options
Variables editation, especially timezone, or set by PHP date("0")
Highlight SQL textarea - may use external CodeMirror
Blob download and image display in edit form (important for Editor with hidden fields in select and SQL command)
Add title to Logout, edit (in select) and select (in menu) for style "hever"
Shift-click in checkboxes to select range
Export by GET parameters
Only first part of big BZ2 export is readable, files are missing in TAR
Double click in select - Esc to abort editation
Draggable columns in alter table (thanks to Michal Manak)
? Filter by value in row under <thead> in select
? Column and table names auto-completition in SQL textarea - http://blog.quplo.com/2010/06/css-code-completion-in-your-browser/
? Aliasing of built-in functions can save 7 KB, function minification can save 7 KB, substitution of repetitive $a["a"] can save 4 KB, substitution of $_GET and friends can save 2 KB, aliasing of $connection->query can save 24 B, JS Closure compiler can save 2 KB, not enclosing HTML attribute values can save 1.2 KB, replacing \\n by \n can save .3 KB
? Branch binary_compile: LZW compression of translations can save 30 KB, LZW compression of all texts can save 11 KB, remove of base64_decode() + using chars 127-255 in minification can save 1 KB

Editor:
Checkbox for boolean searches
JavaScript data validation - columns containing word email, url, ...
Joining tables - PRIMARY KEY (table, joining)
Rank, Tree structure
Add whisperer to fields with foreign key to big table
JS calendar for date fields

MySQL:
Data longer than max_allowed_packet can be sent by mysqli_stmt_send_long_data()
? Geometry support

SQLite:
Copy tables
ASC and DESC instead of text length in index
Delimiter in export and SQL command
Backward keys in Editor

PostgreSQL:
Display number of schemas in databases overview
Users - SELECT * FROM pg_user
ORDER BY COUNT(*)
Export - http://www.postgresql.org/docs/8.4/static/functions-info.html
Column rights - http://www.postgresql.org/docs/8.4/static/functions-info.html
bool in Editor

MS SQL:
Display default value
Non UTF-8 character sets
Detection of table collation
PDO_MSSQL and PDO_SQLSRV driver with seek

Oracle:
clob comparable with string