2) Inserting multiple rows into a table The steps for inserting multiple rows into a table are similar to the steps for inserting one row. The key difference is in the third step: instead of calling the execute() method of the cursor object, you use the executemany() method. For example...
(4 rows) postgres=#updatedepartmentsSETdepartment_name =CASEdepartment_idWHEN10THEN'SALES'WHEN20THEN'RESEARCH'WHEN30THEN'ACCOUNT'ENDWHEREdepartment_idin(10,20,30);UPDATE3postgres=#select*fromdepartments ;department_id | department_name | manager_id | location_id---+---+--...
Returns SQL statement, slight improvement on the code from 'rorezende at hotmail dot com'. This version adds bool values correctly.It also checks to make sure there is actually a value in the array before including it in the sql statement. (ie: null values or empty strings won't be adde...
This returns aCAR.*, meaning all the rows from theCARtable back. To call the above: INSERTINTOcar (id,owner)SELECTid,ownerFROMnew_valuesWHERENOTEXISTS(SELECT1FROMupsert upWHEREup.id=new_values.id); Here, we check if the table created in theUPSERTwhen it returns theCAR.*contains the value...
Warning Never, never, NEVER use Python string concatenation (+) or string parameters interpolation (...
Warning Never, never, NEVER use Python string concatenation (+) or string parameters interpolation (...
$ pg_dump --table t --inserts --insert-multi=100 postgres > dump.sql # \i dump.sql [...] INSERT 0 1 psql:dump.sql:35: ERROR: syntax error at or near ")" LINE 1: ); ^ I'm not aware of a valid way to insert multiple 0 column rows in a single INSERT statement, so not...
He is asking for a divider in the middle of the table. I think between rows. Exactly. The divider might be used to separate sections within the table, or to separate a footer with multiple rows. Drawing a divider before a single last row is one possible use case, but it would be ...
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returning rows that were not successfully inserted only. This is only meaningful in the context of INSERT...ON DUPLICATE KEY IGNORE. Sure, clients could figure this out for themselves using vanilla "RETURNING *", but I think that this addition is justified by the fact that it's ...