Andrew Dunstan <[EMAIL PROTECTED]> writes: > However, I have just about convinced myself that we don't need > IsFirstByte for matching "_" for UTF8, either preceded by "%" or not, as > it should always be true. Can anyone come up with a counter example?
You have to be on a first byte before you can meaningfully apply NextChar, and you have to use NextChar or else you don't count characters correctly (eg "__" must match 2 chars not 2 bytes). regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match