postgres

Commit Graph

Author	SHA1	Message	Date
Tom Lane	31edbadf4a	Downgrade implicit casts to text to be assignment-only, except for the ones from the other string-category types; this eliminates a lot of surprising interpretations that the parser could formerly make when there was no directly applicable operator. Create a general mechanism that supports casts to and from the standard string types (text,varchar,bpchar) for every datatype, by invoking the datatype's I/O functions. These new casts are assignment-only in the to-string direction, explicit-only in the other, and therefore should create no surprising behavior. Remove a bunch of thereby-obsoleted datatype-specific casting functions. The "general mechanism" is a new expression node type CoerceViaIO that can actually convert between any two datatypes if their external text representations are compatible. This is more general than needed for the immediate feature, but might be useful in plpgsql or other places in future. This commit does nothing about the issue that applying the concatenation operator \|\| to non-text types will now fail, often with strange error messages due to misinterpreting the operator as array concatenation. Since it often (not always) worked before, we should either make it succeed or at least give a more user-friendly error; but details are still under debate. Peter Eisentraut and Tom Lane	19 years ago
Tom Lane	684ad6a92f	Rename contrib contains/contained-by operators to @> and <@, per discussion.	20 years ago
Bruce Momjian	796de9c1ed	/contrib/cube improvements: Update the calling convention for all external facing functions. By external facing, I mean all functions that are directly referenced in cube.sql. Prior to my update, all functions used the older V0 calling convention. They now use V1. New Functions: cube(float[]), which makes a zero volume cube from a float array cube(float[], float[]), which allows the user to create a cube from two float arrays; one for the upper right and one for the lower left coordinate. cube_subset(cube, int4[]), to allow you to reorder or choose a subset of dimensions from a cube, using index values specified in the array. Joshua Reich	20 years ago
Neil Conway	48fb696753	Fix a number of syntax errors in contrib modules' uninstall scripts. Most of the changes add the mandatory USING clause to DROP OPERATOR CLASS statements. DROP TYPE is now DROP TYPE CASCADE; without CASCADE a DROP TYPE fails due to the circular dependency on the type's I/O functions. The DROP FUNCTION statements for the I/O functions have been removed, as DROP TYPE CASCADE removes them automatically. Patch from Michael Fuhr.	20 years ago
Peter Eisentraut	fe83b3ebc6	contrib uninstall scripts by David Fetter	20 years ago

5 Commits (7abe764f1729eea2d3a8ec21006d9df875f9baee)