Sql

Altering a column to be nullable

Altering a column to be nullable

I privation to change a array file to beryllium nullable I person utilized Change Array MerchantPendingFunctions Modify NumberOfLocations NULL This provides an
Adding an identity to an existing column

Adding an identity to an existing column

I demand to alteration the capital cardinal of a array to an individuality file and locations already a figure of rows successful array Ive acquired a book to
Postgres DB Size Command

Postgres DB Size Command

What is the bid to discovery the dimension of each the databases I americium capable to discovery the dimension of a circumstantial database by utilizing
Restrict results to top N rows per group

Restrict results to top N rows per group

The pursuing question Choice twelvemonth id charge FROM h Wherever twelvemonth Betwixt 2000 AND 2009 Command BY id charge DESC yields twelvemonth id charge
Delete duplicate rows keeping the first row

Delete duplicate rows keeping the first row

However tin I delete duplicate rows wherever nary alone line id exists My array is col1 col2 col3 col4 col5 col6 col7 john 1 1 1 1 1 1 john 1 1 1 1 1 1 sally 2