Method loadSessionVarsInternal

pkg/expression/exprstatic/exprctx.go:338–367

(
	sessionVars *variable.SessionVars, sysVars map[string]string,
)

}

func (ctx *ExprContext) loadSessionVarsInternal(
	sessionVars *variable.SessionVars, sysVars map[string]string,
) *ExprContext {
	opts := make([]ExprCtxOption, 0, 8)
	opts = append(opts, WithEvalCtx(ctx.evalCtx.loadSessionVarsInternal(sessionVars, sysVars)))
	for name := range sysVars {
		name = strings.ToLower(name)
		switch name {
		case variable.CharacterSetConnection, variable.CollationConnection:
			opts = append(opts, WithCharset(sessionVars.GetCharsetInfo()))
		case variable.DefaultCollationForUTF8MB4:
			opts = append(opts, WithDefaultCollationForUTF8MB4(sessionVars.DefaultCollationForUTF8MB4))
		case variable.BlockEncryptionMode:
			blockMode, ok := sessionVars.GetSystemVar(variable.BlockEncryptionMode)
			intest.Assert(ok)
			if ok {
				opts = append(opts, WithBlockEncryptionMode(blockMode))
			}
		case variable.TiDBSysdateIsNow:
			opts = append(opts, WithSysDateIsNow(sessionVars.SysdateIsNow))
		case variable.TiDBEnableNoopFuncs:
			opts = append(opts, WithNoopFuncsMode(sessionVars.NoopFuncsMode))
		case variable.WindowingUseHighPrecision:
			opts = append(opts, WithWindowingUseHighPrecision(sessionVars.WindowingUseHighPrecision))
		case variable.GroupConcatMaxLen:
			opts = append(opts, WithGroupConcatMaxLen(sessionVars.GroupConcatMaxLen))
		}
	}
	return ctx.Apply(opts...)
}