Methods
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Instance Public methods
allowed_index_name_length()
Link
Returns the maximum allowed length for an index name. This limit is enforced by Rails and is less than or equal to index_name_length
. The gap between index_name_length
is to allow internal Rails operations to use prefixes in temporary operations.
column_name_length()
Link
Returns the maximum length of a column name.
columns_per_multicolumn_index()
Link
Returns the maximum number of columns in a multicolumn index.
columns_per_table()
Link
Returns the maximum number of columns per table.
in_clause_length()
Link
Returns the maximum number of elements in an IN (x,y,z) clause. nil
means no limit.
index_name_length()
Link
Returns the maximum length of an index name.
indexes_per_table()
Link
Returns the maximum number of indexes per table.
joins_per_query()
Link
Returns maximum number of joins in a single query.
sql_query_length()
Link
Returns the maximum length of an SQL query.
table_alias_length()
Link
Returns the maximum length of a table alias.