* github-nickvergessen/ticket/12710:
[ticket/12710] Fix missing closing bracket
[ticket/12710] Prefix column so it does not start with a number
[ticket/12710] Pass the original column data to the create function
[ticket/12710] Fix foreach generation
[ticket/12710] Compare to uppercase version
[ticket/12710] Do not try to match the uniqueness in the query
[ticket/12710] Remove table_name from index_name before deleting and recreating them
[ticket/12710] Can not use upper in oracles where claus
[ticket/12710] Correctly select index name and compare to column name
[ticket/12710] Fix "ORA-00972: identifier is too long [972]" on oracle
[ticket/12710] Fix problems with creating unique indexes on oracle
[ticket/12710] Correctly fetch unique and normal indexes only in MSSQL
[ticket/12710] Fix changing the column type on oracle
[ticket/12710] Prepare get_existing_indexes() for other DBMS
56ca276dcf